Patent Publication Number: US-11649682-B1

Title: Multi-part superabrasive compacts, rotary drill bits including multi-part superabrasive compacts, and related methods

Description:
BACKGROUND 
     Wear-resistant, polycrystalline diamond compacts (‘PDCs’) are utilized in a variety of mechanical applications. For example, PDCs are used in drilling tools (e.g., cutting elements, gage trimmers, etc.), machining equipment, bearing apparatuses, wire-drawing machinery, and in other mechanical apparatuses. 
     PDCs have found particular utility as superabrasive cutting elements in rotary drill bits, such as roller-cone drill bits and fixed-cutter drill bits. A PDC cutting element typically includes a superabrasive diamond layer commonly known as a diamond table. The diamond table is formed and bonded to a substrate using a high-pressure/high-temperature (‘HPHT’) process. The PDC cutting element may be brazed directly into a preformed pocket, socket, or other receptacle formed in a bit body. The substrate may often be brazed or otherwise joined to an attachment member, such as a cylindrical backing. A rotary drill bit typically includes a number of PDC cutting elements affixed to the bit body. It is also known that a stud carrying the PDC may be used as a PDC cutting element when mounted to a bit body of a rotary drill bit by press-fitting, brazing, or otherwise securing the stud into a receptacle formed in the bit body. 
     Conventional PDCs are normally fabricated by placing a cemented carbide substrate into a container or cartridge with a volume of diamond particles positioned on a surface of the cemented carbide substrate. A number of such cartridges may be loaded into an HPHT press. The substrate(s) and volume(s) of diamond particles are then processed under HPHT conditions in the presence of a catalyst material that causes the diamond particles to bond to one another to form a matrix of bonded diamond grains defining a polycrystalline diamond (‘PCD’) table. Cobalt is often used as the catalyst material for promoting intergrowth of the diamond particles. 
     In one conventional approach, a constituent of the cemented carbide substrate, such as cobalt from a cobalt-cemented tungsten carbide substrate, liquefies and sweeps from a region adjacent to the volume of diamond particles into interstitial regions between the diamond particles during the HPHT process. The cobalt acts as a catalyst to promote intergrowth between the diamond particles, which results in formation of a matrix of bonded diamond grains having diamond-to-diamond bonding therebetween, with interstitial regions between the bonded diamond grains being occupied by the solvent catalyst. Once the PCD table is formed, the solvent catalyst may be at least partially removed from the PCD table of the PDC by acid leaching. 
     Despite the availability of a number of different PDCs, manufacturers and users of PDCs continue to seek PDCs that exhibit improved toughness, wear resistance, thermal stability, or combinations thereof. 
     SUMMARY 
     Embodiments disclosed are directed to a superabrasive compact including one or more superabrasive cutting portions or segments, rotary drill bits including one or more of the superabrasive compacts, and related methods (e.g., methods of fabricating and/or operating the superabrasive cutting elements). For example, the superabrasive compact may include polycrystalline diamond that may form at least a portion of a working surface of the superabrasive compact. In one or more embodiments, the superabrasive compact may include a mounting hub and a superabrasive cutting segment that may be connected to the mounting hub. For example, the superabrasive cutting segment may include thermally-stable polycrystalline diamond that may form or define at least a portion of the working surface and/or a cutting edge of the superabrasive compact. 
     An embodiment includes a superabrasive compact that includes a mounting hub including an upper surface, a lower surface, and a mounting feature including at least a portion of that includes a downward-facing taper. The superabrasive compact further includes a superabrasive cutting segment including an upper surface, a bottom surface, and a peripheral surface including a portion that exhibits a substantially complementary shape to at least a portion of the mounting feature. The downward-facing taper at least partially restricts axial movement of the superabrasive cutting segment relative to the mounting hub in an axial direction. 
     Another embodiment includes a PDC that includes a mounting hub including an upper surface, a lower surface, and a mounting feature. The mounting hub includes polycrystalline diamond. The PDC includes a superabrasive cutting segment including an upper surface, a bottom surface, and a peripheral surface including a portion that exhibits a substantially complementary shape to at least a portion of the mounting feature. The superabrasive cutting segment includes polycrystalline diamond that is more thermally stable than the polycrystalline diamond of the mounting hub. The mounting hub at least partially restricts movement of the superabrasive cutting element. 
     Embodiments also include a rotary drill bit that includes a bit body that includes a plurality of blades, and a plurality of superabrasive compacts secured to or integrated with at least one blade of the plurality of blades. At least one of the plurality of superabrasive compacts includes a mounting hub secured to the at least one blade and including a mounting feature, and a superabrasive cutting segment including a peripheral surface having at least a portion of that exhibits a substantially complementary shape to the mounting feature. The superabrasive cutting segment is secured to the at least one blade by the mounting hub. 
     Features from any of the disclosed embodiments may be used in combination with one another, without limitation. In addition, other features and advantages of the present disclosure will become apparent to those of ordinary skill in the art through consideration of the following detailed description and the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The drawings illustrate several embodiments, wherein identical reference numerals refer to identical or similar elements or features in different views or embodiments shown in the drawings. 
         FIG.  1 A  is an isometric view of a superabrasive compact, according to an embodiment; 
         FIG.  1 B  is a cross-sectional view of the superabrasive compact of  FIG.  1 A ; 
         FIG.  2    is a cross-sectional view of a superabrasive compact, according to an embodiment; 
         FIG.  3    is a cross-sectional view of a superabrasive compact, according to another embodiment; 
         FIG.  4    is a cross-sectional view of a superabrasive compact, according to yet another embodiment; 
         FIG.  5    is a cross-sectional view of a superabrasive compact, according to one or more additional or alternative embodiments; 
         FIG.  6    is a cross-sectional view of a superabrasive compact, according to at least one additional or alternative embodiment; 
         FIG.  7    is a top plan view of a superabrasive compact, according to an embodiment; 
         FIG.  8 A  is a top plan view of a superabrasive compact, according to another embodiment; 
         FIG.  8 B  is a cross-sectional view of the superabrasive compact of  FIG.  8 A ; 
         FIG.  8 C  is a cross-sectional view of a superabrasive compact, according to an embodiment; 
         FIG.  9    is a top plan view of a superabrasive compact, according to yet one other embodiment; 
         FIG.  10    is a top plan view of a superabrasive compact, according to one or more embodiments; 
         FIG.  11 A  is a top plan view of a superabrasive compact, according to an embodiment; 
         FIG.  11 B  is a cross-sectional view of the superabrasive compact of  FIG.  11 A ; 
         FIG.  11 C  is a cross-sectional view of a superabrasive compact, according to an embodiment; 
         FIG.  11 D  is a cross-sectional view of a superabrasive compact, according to another embodiment; 
         FIG.  12    is a top plan view of a superabrasive compact, according to an embodiment; 
         FIG.  13    is a top plan view of a superabrasive compact, according to another embodiment; 
         FIG.  14    is a top plan view of a superabrasive compact, according to yet another embodiment; 
         FIGS.  15 A- 15 C  are isometric views of various embodiments of superabrasive compacts; 
         FIG.  16 A  is an isometric view of a rotary drill bit, according to an embodiment; 
         FIG.  16 B  is a top plan view of the rotary drill bit of  FIG.  16 A ; 
         FIG.  17    is an enlarged isometric view of a portion of the rotary drill bit of  FIG.  16 A ; and 
         FIG.  18    is an enlarged and exploded isometric view of a portion of a rotary drill bit, according to an embodiment; and 
         FIG.  19    is an isometric view of a pick body including at least one superabrasive compact or cutting segment according to one embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments disclosed are directed to a superabrasive compact including one or more superabrasive cutting portions or segments, rotary drill bits including one or more of the superabrasive compacts, and related methods (e.g., methods of fabricating and/or operating the superabrasive compacts). For example, the superabrasive compact may include polycrystalline diamond that may form at least a portion of a working surface of the superabrasive compact. In one or more embodiments, the superabrasive compact may include a mounting hub and a superabrasive cutting segment that may be connected to the mounting hub. For example, the superabrasive cutting segment may include thermally-stable polycrystalline diamond that may form or define at least a portion of the working surface and/or a cutting edge of the superabrasive compact. 
     In an embodiment, the superabrasive cutting segment may include superabrasive material (i.e., a material with a hardness exceeding a hardness of tungsten carbide), such as polycrystalline diamond (e.g., the superabrasive cutting segment may essentially include only polycrystalline diamond, such as a partially or substantially completely leached polycrystalline diamond table). Moreover, one or more portions of the mounting hub may include superabrasive material. For example, the mounting hub may be include polycrystalline diamond and may be bonded to a substrate. In some embodiments, the polycrystalline diamond of the mounting hub may be unleached and/or may include a selected amount or percent weight of catalyst material therein or other binder in interstitial regions thereof. 
     The mounting hub and the superabrasive cutting segment may include one or more connection or mounting features that may connect superabrasive cutting segment(s) to the mounting hub. For example, one or more portions of the superabrasive cutting segment(s) and the mounting feature(s) may have substantially complementary shapes and, when connected together, the mounting feature(s) may restrict relative movement between the mounting hub and the superabrasive cutting segment (e.g., lateral and/or axial). For example, the mounting feature(s) may interface and/or interlock together, such that the superabrasive cutting segment may be restricted from moving outward relative to an upper face of the mounting hub (e.g., such as to prevent the upper surface of the hub from being closer to the substrate than the upper surface of the superabrasive cutting segment(s)). 
     In an embodiment, the mounting feature(s) may facilitate securing a superabrasive cutting segment of thermally-stable polycrystalline diamond to the mounting hub (e.g., without cracking the thermally-stable polycrystalline diamond). Optionally, the mounting feature(s) may allow the superabrasive cutting segment to move axially away from the upper surface of the hub. In an embodiment, one or more support elements may be suitably positioned to support the superabrasive cutting segment in a manner that prevents or limits downward axial movement thereof. Under some operating conditions, certain stresses experienced by the superabrasive cutting segment may be reduced (e.g., as compared to a cutting segment brazed to a substrate). 
       FIG.  1 A  shows an isometric view of a superabrasive compact  100 , according to an embodiment. The superabrasive compact  100  includes a mounting hub  110  and a superabrasive cutting segment  120  at least partially captured by, connected to, and/or secured to the mounting hub  110 . In an embodiment, the superabrasive compact  100  includes a support element, such as a substrate  130  that may at least partially secure together the superabrasive cutting segment  120  and the mounting hub  110 . For example, the substrate  130  may prevent or limit downward movement of the superabrasive cutting segment  120  relative to the mounting hub  110  (e.g., limiting movement of the superabrasive cutting segment  120  downward from an upper surface  111  of the mounting hub  110 , such that an upper surface  121  of the superabrasive cutting segment  120  is recessed relative to the upper surface  111 ). 
     Generally, the superabrasive compact  100  includes a working upper surface  101  and a cutting edge that may be defined by and between the upper surface  101  and a peripheral surface extending thereto. In an embodiment, at least a portion of the upper surface  101  may be defined or formed by the upper surface  121  of the superabrasive cutting segment  120 . For example, a portion of the upper surface  101  may be defined by the upper surface  121  and another portion of the upper surface  101  may be defined by the upper surface  111  of the mounting hub  110 . 
     In an embodiment, the superabrasive compact  100  may include a cutting edge. For example, the cutting edge may include and/or may be at least partially defined by a chamfer. In the illustrated embodiment, the superabrasive cutting segment  120  includes a chamfer  122  extending about a portion of the periphery thereof (e.g., the chamfer may extend about an exposed portion of the periphery of the superabrasive cutting segment  120 , which is at least partially exposed out of the mounting hub  110  and/or forms a portion of the cutting edge of the superabrasive compact  100 ). Additionally or alternatively, the periphery of the mounting hub  110  may include a chamfer  112  (e.g., extending between the upper surface  111  and the peripheral surface of the mounting hub  110 ). In an embodiment, the chamfer  112  of the mounting hub  110  may be substantially the same dimensions and configuration as the chamfer  122  of the superabrasive cutting segment  120 . Alternatively, the superabrasive cutting segment  120  may have a larger chamfer  122  than the chamfer  112  of the mounting hub  110 , or vice versa (e.g., a smaller chamfer  122  on the superabrasive cutting segment  122  may result in more aggressive cutting during operation). 
     In the illustrated embodiment, the upper surface  101  is substantially planar and has a substantially circular periphery or perimeter. It should be appreciated, however, that the upper surface  101  may have any number of suitable shapes and configurations, which may vary from one embodiment to the next. For example, the upper surface  101  may be dome-shaped, conical, concave, etc. Moreover, the upper surface  101  may have a rectangular, polygonal, or any other suitable perimeter shape. 
     In an embodiment, the superabrasive compact  100  may include an intermediate supporting element  140 , which may support, at least partially contact, or about a bottom surface of the superabrasive cutting segment  120 . For example, the substrate  130  may position the intermediate supporting element  140  adjacent to or against the bottom surface of the superabrasive cutting segment  120 . Additionally or alternatively, the intermediate supporting element  140  may be bonded to the substrate  130  and/or superabrasive cutting segment  120  (e.g., brazed, welded, etc.). In one or more embodiments, the mounting hub  110 , superabrasive cutting segment  120 , substrate  130 , intermediate supporting element  140 , or combinations thereof may be bonded together at one or more portions or surfaces that are in at least partial contact with one another, as described below in more detail. For example, a TiCuSil braze alloy or other suitable braze alloys may be used to braze together the mounting hub  110 , superabrasive cutting segment  120 , substrate  130 , intermediate supporting element  140 , or combinations thereof. In some embodiments, brazing may be performed in an inert or partially inert environment, such as by vacuum brazing or brazing under an argon atmosphere. In any of the embodiments disclosed herein, the bonding agents disclosed in U.S. Pat. No. 9,255,312 may be used to bond together the mounting hub  110 , superabrasive cutting segment  120 , substrate  130 , intermediate supporting element  140 , or combinations thereof. The disclosure of U.S. Pat. No. 9,255,312 is incorporated herein by this reference, in its entirety. 
     Additional or alternative braze alloys include gold alloys, silver alloys, copper alloys, or titanium alloys, among others. In an embodiment, braze alloy comprise an alloy of about 4.5 weight % titanium, about 26.7 weight % copper, and about 68.8 weight % silver, otherwise known as TICUSIL®, which is currently commercially available from Wesgo Metals, Hayward, Calif. In an embodiment, a braze alloy may comprise an alloy of about 25 weight % gold, about 37 weight % copper, about 10 weight % nickel, about 15 weight % palladium, and about 13 weight % manganese, otherwise known as PALNICUROM® 10, which is also currently commercially available from Wesgo Metals, Hayward, Calif. Another suitable braze alloy may include about 92.3 weight % nickel, about 3.2 weight % boron, and about 4.5 weight % silicon. Yet another suitable braze alloy may include about 92.8 weight % nickel, about 1.6 weight % boron, and about 5.6 weight % silicon. Moreover, various elements and/or components of the superabrasive compact  100  can be brazed together in a vacuum environment (e.g., in a vacuum furnace or induction furnace), as described more fully in U.S. Pat. No. 8,727,044, the entire disclosure of which is incorporated herein by this reference. 
     In some embodiments, braze between the superabrasive cutting segment  120  and intermediate supporting element  140  may be formed from a disk or foil of suitable braze material, which may be inserted between superabrasive cutting segment  120  and the intermediate supporting element  140  during the fabrication of the superabrasive compact  100 . For example, a disk of braze material may be placed between the superabrasive cutting segment  120  and intermediate supporting element  140  and may be heated to bond together the superabrasive cutting segment  120  and the intermediate supporting element  140 . 
     The mounting hub  110  may have a mounting feature  113  (e.g., an opening or channel) within which the superabrasive cutting segment  120  may be positioned and/or which may secure, position, or at least partially restrain, the superabrasive cutting segment  120  relative to the mounting hub  110 . Generally, at least a portion of peripheral surface  123  (see  FIG.  1 B ) of the superabrasive cutting segment  120  and the interior surface that defines the opening mounting feature  113  of the mounting hub  110  may have complementary shapes and sizes, such that the superabrasive cutting segment  120  may be inserted into and/or positioned within the mounting feature  113  and/or vice versa. In some embodiments, at least a portion of the peripheral surface  123  of the superabrasive cutting segment  120  may have a downward-facing taper (as shown in  FIGS.  1 A- 1 B ), and at least a corresponding portion of the mounting feature  113  may have a complementary taper to the tapered portion(s) of the superabrasive cutting segment  120 . 
     For example, when the superabrasive cutting segment  120  is coupled with the mounting feature  113  of the mounting hub  110 , the downward-facing taper may prevent outward movement of the superabrasive cutting segment  120  relative to the mounting hub  110  (e.g., prevent or limit movement of the upper surface  121  outward relative to the upper surface  111 , in a manner that the upper surface  121  would protrude past the upper surface  111 ). 
     The downward-facing taper may have any suitable angle θ as shown in  FIG.  1 B  (e.g., any suitable included angle or any suitable angle relative to a vertical or longitudinal axis  10  of the superabrasive compact  100 ). In an embodiment, the taper may be a locking taper, such that the superabrasive cutting segment  120  may be retained inside the mounting feature  113  by the friction and/or interference therebetween (e.g., angle θ may be about 1° to about 5°, 5°-10°, 10°-15°, or 15°-25°). Alternatively, the taper may have a release angle, such that superabrasive cutting segment  120  may freely move (if not otherwise secured) relative to the mounting hub  110  (e.g., such that the upper surface  121  moves downward from the upper surface  111 ). 
     It should be appreciated, however, that one or more portions of the peripheral surface  123  of the superabrasive cutting segment  120  may be substantially cylindrical or without a taper (e.g., the surface(s) may be substantially parallel to the longitudinal axis  10  of the superabrasive compact  100  and/or substantially perpendicular to the upper surface  121 ). Moreover, the mounting feature  113  may be defined by substantially frusto-conical inside surfaces that may be obliquely angled relative to the longitudinal axis  10 , such as to define a shape that is substantially complementary to the shape of the peripheral surface  123  of the superabrasive compact  120 . 
     Generally, the superabrasive cutting segment  120  and/or the mounting feature  113  of the mounting hub  110  may have any suitable cross-sectional shape (e.g., at a cross-section taken perpendicular to the longitudinal axis  10 ). In the illustrated embodiment, the superabrasive cutting segment  120  and mounting feature  113  have arcuate cross-sectional shapes. In particular, for example, one or more portions of the cross-sectional shape of the superabrasive cutting segment  120  and/or mounting feature  113  may be semi-circular. In an embodiment, a portion of the cross-sectional shape of the superabrasive cutting segment  120  and/or the mounting feature  113  may have a first radius, while another portion of the superabrasive cutting segment  120  and/or mounting feature  113  may have a second radius, which may be different from the first radius (e.g., the portion of the superabrasive cutting segment  120  that is in contact with the mounting hub  110  may have a first radius, and the portion of the superabrasive cutting segment  120  that is exposed out of the mounting hub  110  may have a second radius that is less than or greater than the first radius). For example, the portion of the peripheral surface of the superabrasive cutting segment  120  that extends between edges  115  and  116  of the mounting hub  110  may coincide with a portion of an imaginary cylindrical surface, while the portion of the peripheral surface of the superabrasive cutting segment that is adjacent to the mounting feature  113  may be angled and at least a portion thereof may coincide with a portion of an imaginary conical surface. 
     It should be appreciated that the radii of the superabrasive cutting segment  120  and/or of the mounting feature  113  may be different or may change at different cross-sections along the longitudinal axis  10  (e.g., the radii may increase from a cross-section located closer to the upper surface  101  to another cross-section located farther from the upper surface  101 ). In other words, tapered portions of the superabrasive cutting segment  120  and/or mounting feature  113  may be defined by changing radii from one cross-section to another cross-section along the longitudinal axis  10 . 
     In an embodiment, the mounting feature  113  may have an open side (e.g., the mounting feature  113  may be generally channel-shaped or may form a recess), such that a portion of the superabrasive cutting segment  120  may protrude out of or may be exposed, as described above. For example, the open side of the mounting feature  113  may be defined by edges or sides  115 ,  116 . More specifically, as shown in  FIG.  1 A , a portion of the peripheral surface of the superabrasive cutting segment  120  and the peripheral surface of the mounting hub  110  may lie on or coincide with the same imaginary cylindrical surface (e.g., the peripheral surface of the mounting hub  110  may terminate at the edges  115 ,  116  and the peripheral surface of the superabrasive cutting segment  120  may extend substantially between the edges  115  and  116 ). 
     Furthermore, the superabrasive cutting segment  120  and the mounting feature  113  may be shaped in order to prevent or limit lateral movement of the superabrasive cutting segment  120  relative to the mounting hub  110  (e.g., in a direction substantially perpendicular to the longitudinal axis  10  and outward and/or in a substantially plane parallel to the upper surface  101 ). For example, the mounting feature  113 , which extends between the edges  115 ,  116 , may retain the superabrasive cutting segment  120  substantially fixed in the lateral direction relative to the mounting hub  110 . As described below in more detail, the superabrasive cutting segment  120  and/or mounting feature  113  may have any number of suitable shapes that may be configured to restrain the superabrasive cutting segment  120  relative to the mounting hub  110  in the lateral direction, such that a portion of the superabrasive cutting segment  120  may protrude beyond the peripheral surface of the mounting hub  110  and/or may extend between edges defining an open side of the mounting feature  113  in the mounting hub  110 , while maintaining the superabrasive cutting segment  120  substantially affixed relative to the mounting hub  110  in the lateral direction. 
     For example, the superabrasive cutting segment  120  may be inserted into the mounting feature  113  of the mounting hub  110  (e.g., from a back side), and the peripheral surface  123  of the superabrasive cutting segment  120  may be positioned near and/or at least partially contacting the inner surface defining the mounting feature  113  in a manner that limits or prevents the superabrasive cutting segment  120  from moving outward relative to the upper surface  111 . In some embodiments, as mentioned above, the superabrasive cutting segment  120  may be substantially restrained from moving downward (e.g., to prevent recessing the upper surface  121  relative to the upper surface  111 ). For example, the substrate  130  and/or the intermediate supporting element  140  may position or bias the superabrasive cutting segment  120  against the taper of the mounting feature  113 , thereby securing the superabrasive cutting segment  120  relative to the mounting hub  110 . 
     In some embodiments, one or more surfaces of the superabrasive cutting segment  120  may be bonded to one or more corresponding or adjacent surfaces. For example, as shown in  FIG.  1 B , a bottom surface  124  of the superabrasive cutting segment  120  may be brazed to a top surface  141  of the intermediate supporting element  140 . Additionally or alternatively, at least a portion of the peripheral surface  123  of the superabrasive cutting segment  120  may be brazed to an inner surface  114  (that defines the opening mounting feature  113  ( FIG.  1 A )) of the mounting hub  110 . Furthermore, in an embodiment, the mounting hub  110  and/or the intermediate supporting element  140  may be brazed to the substrate  130  at an interface therebetween. For example, brazing together the mounting hub  110 , substrate  130 , and intermediate supporting element  140  may together securely affix the superabrasive cutting segment  120  relative to one another other. 
     In at least one embodiment, the superabrasive cutting segment  120  may be unbonded from or may have no metallurgical bond with the mounting hub  110  and/or intermediate supporting element  140 . For example, the superabrasive cutting segment  120  may be positioned adjacent to (e.g., pressed into) the mounting feature  113  and the downward-facing taper may limit or prevent movement of the superabrasive cutting segment  120  upwardly outward relative to the upper surface  111 . Moreover, the substrate  130  and/or intermediate supporting element  140  may prevent movement of the superabrasive cutting segment  120  downward (e.g., inward in the mounting feature  113 ). 
     In an embodiment, the superabrasive cutting segment  120  and/or mounting hub  110  may comprise polycrystalline diamond and the substrate  130  may comprise a cemented carbide. For example, substrate  130  may comprise tungsten carbide, tantalum carbide, vanadium carbide, niobium carbide, chromium carbide, titanium carbide, or combinations of the foregoing carbides cemented with at least one cementing constituent, such as iron, nickel, cobalt, or alloys thereof (e.g., cobalt-cemented tungsten carbide). In an embodiment, the mounting hub  110  itself may comprise a polycrystalline diamond compact including a polycrystalline diamond table integrally formed with a cobalt-cemented tungsten carbide substrate, the polycrystalline diamond table defining the upper surface  111  of the mounting hub. Furthermore, in any of the embodiments disclosed herein, the polycrystalline diamond table (e.g., the, superabrasive cutting segment  120  and/or mounting hub  110 ) may be exhibit a thickness of about 0.0500 inches to about 0.500 inches, such as about 0.080 inches to about 0.100 inches, or about 0.080 inches to about 0.150 inches. Furthermore, in any of the embodiments disclosed herein, the polycrystalline diamond table (e.g., the, superabrasive cutting segment  120  and/or mounting hub  110 ) may be leached to at least partially remove or substantially completely remove a metal-solvent catalyst (e.g., cobalt, iron, nickel, or alloys thereof) that was used to initially sinter precursor diamond particles to form the polycrystalline diamond. In other embodiments, the polycrystalline diamond table may comprise another type of thermally-stable polycrystalline diamond material. In another embodiment, an infiltrant used to re-infiltrate a preformed leached polycrystalline diamond table may be leached or may otherwise be removed to a selected depth from a working surface. Moreover, in any of the embodiments disclosed herein, the polycrystalline diamond may be un-leached and include a metal-solvent catalyst (e.g., cobalt, iron, nickel, or alloys thereof) that was used to initially sinter the precursor diamond particles that form the polycrystalline diamond and/or an infiltrant (e.g., a braze material) used to re-infiltrate a preformed leached polycrystalline diamond table. Examples of methods for fabricating superabrasive cutting segments and superabrasive materials and/or structures from which the superabrasive cutting segments may be made are disclosed in U.S. Pat. Nos. 7,866,418; 7,998,573; 8,034,136; and 8,236,074; the disclosure of each of the foregoing patents is incorporated herein, in its entirety, by this reference. 
     The diamond particles that may be used to fabricate the superabrasive table in a high-pressure/high-temperature process (“HPHT”) may exhibit a larger size and at least one relatively smaller size. As used herein, the phrases “relatively larger” and “relatively smaller” refer to particle sizes (by any suitable method) that differ by at least a factor of two (e.g., 30 μm and 15 μm). According to various embodiments, the diamond particles may include a portion exhibiting a relatively larger size (e.g., 70 μm, 60 μm, 50 μm, 40 μm, 30 μm, 20 μm, 16 μm, 15 μm, 12 μm, 10 μm, 8 μm) and another portion exhibiting at least one relatively smaller size (e.g., 15 μm, 12 μm, 10 μm, 8 μm, 6 μm, 5 μm, 4 μm, 3 μm, 2 μm, 1 μm, 0.5 μm, less than 0.5 μm, 0.1 μm, less than 0.1 μm). In an embodiment, the diamond particles may include a portion exhibiting a relatively larger size between about 10 μm and about 40 μm and another portion exhibiting a relatively smaller size between about 1 μm and 4 μm. In another embodiment, the diamond particles may include a portion exhibiting the relatively larger size between about 15 μm and about 50 μm and another portion exhibiting the relatively smaller size between about 5 μm and about 15 μm. In another embodiment, the relatively larger size diamond particles may have a ratio to the relatively smaller size diamond particles of at least 1.5. In some embodiments, the diamond particles may comprise three or more different sizes (e.g., one relatively larger size and two or more relatively smaller sizes), without limitation. The resulting polycrystalline diamond formed from HPHT sintering the aforementioned diamond particles may also exhibit the same or similar diamond grain size distributions and/or sizes as the aforementioned diamond particle distributions and particle sizes. Additionally, in any of the embodiments disclosed herein, the superabrasive cutting segments may be free-standing (e.g., substrateless) and/or formed from a polycrystalline diamond body that is at least partially or substantially leached to remove a metal-solvent catalyst initially used to sinter the polycrystalline diamond body. 
     In some embodiments, the superabrasive cutting segment  120  may be at least partially more thermally stable then the mounting hub  110  (e.g., superabrasive cutting segment  120  may be leached, while the mounting hub  110  may be at least partially or substantially unleached or leached to a lesser degree than the superabrasive cutting segment  120 ). In an embodiment, the mounting hub  110  may include polycrystalline diamond having a first average diamond grain size and the superabrasive cutting segment  120  may include polycrystalline diamond having a second average diamond grain size (e.g., the mounting hub  110  may include polycrystalline diamond that has a larger average diamond grain size than the superabrasive cutting segment  120 ), or vice versa. Additionally or alternatively, the mounting hub  110  may include an unpolished upper surface  111 , and the superabrasive cutting segment  120  may include a polished upper surface  121  (e.g., the upper surface  111  may have a greater roughness than the upper surface  121 ), or vice versa. 
     In some embodiments, the mounting hub  110  and/or the superabrasive cutting segment  120  may include a single layer of polycrystalline diamond or multiple layers. For example, the mounting hub  110  may include a multiple layers of superabrasive material (e.g., polycrystalline diamond, polycrystalline boron nitride, silicon carbide, non-diamond ceramics, etc.) and the superabrasive cutting segment  120  may include a single layer (e.g., thermally-stable polycrystalline diamond), or vice versa. In at least one embodiment, the mounting hub  110  may include multi-layered unleached polycrystalline diamond, and the superabrasive cutting segment  120  may include a thermally-stable or at least partially leached multi-layered polycrystalline diamond. In some embodiments, the mounting hub  110  and the superabrasive cutting  120  may include polycrystalline diamond (e.g., the superabrasive cutting segment  120  may include polycrystalline diamond that is more thermally stable than the polycrystalline diamond of the mounting hub  110 ). 
     Additionally or alternatively, the superabrasive cutting segment  120  may be fabricated or manufactured at a higher pressure than the mounting hub  110  that includes polycrystalline diamond. For example, the superabrasive cutting segment  120  may be fabricated at a cell pressure of at least 7.5 GPa (e.g., about 7.5 GPa to about 15 GPa), and the mounting hub  110  may be fabricated at a cell pressure below 7.5 GPa. In some embodiments, the superabrasive cutting segment  120  may exhibit a coercivity of 115 Oe or more, a high-degree of diamond-to-diamond bonding, a specific magnetic saturation about 15 G·cm 3 /g or less, and a metal-solvent catalyst content of about 7.5 weight % (“wt %”) or less. Magnetic and other physical properties for the superabrasive cutting segment  120  fabricated at a cell pressure of at least 7.5 GPa are disclosed in U.S. Pat. No. 7,866,418, which was previously incorporated herein by reference. 
     For example, the superabrasive cutting segment  120  may have lower residual stresses than the mounting hub  110  (e.g., lower residual compressive stresses) when the superabrasive cutting segment  120  is formed at a cell pressure greater than 7.5 GPa and the mounting hub  110  is formed at a cell pressure less than 7.5 GPa. Such a configuration may cause less catalyst material to be present in the superabrasive cutting segment  120  than in the mounting hub  110 ; hence, the cutting segment  120  may exhibit a higher thermal stability than mounting hub  110 . In an embodiment, mounting and/or brazing the superabrasive compact  100  to a holder (e.g., to a drill bit, a support ring of a bearing assembly, etc.) may introduce stress with substrate  130  and/or mounting hub  110  (e.g., during brazing, as one or more portions of the superabrasive compact  100  expands). However, the mounting hub  110  and/or the substrate  130 , may be more resistant to liquid metal embrittlement cracking during brazing than a superabrasive cutting segment  120  (e.g., formed at cell pressures greater than 7.5 GPa). In an embodiment, because a majority of the peripheral surface  123  of the superabrasive cutting segment  120  is surrounded by the mounting hub  110 , liquid metal embrittlement cracking during brazing may be reduced and/or eliminated in the superabrasive compact  100 . 
     Moreover, in at least one embodiment, the mounting hub  110  may include non-polycrystalline diamond material. Suitable materials include tungsten carbide and/or tungsten carbide impregnated and/or cemented with one or more materials, such as cobalt, nickel, brass, combinations thereof, etc. Additional or alternative materials for the mounting hub  110  include cubic boron nitride (“CBN”), silicon nitride, alumina, titanium diboride, matrix material, ceramic tape, etc. In one or more embodiments, the mounting hub  110  may include a non-superabrasive material, such as steel. In at least one embodiment, the upper surface  111  of the mounting hub  110  may include and/or may be defined by a coating, such as a TiN, TiC, TiCN, hardfacing, diamond-like carbon (“DLC”), CVD diamond, SiC, SiN, any metal carbide, WC, TiAlN, or combinations thereof, etc. 
     The intermediate supporting element  140  may also include any number of suitable materials, such as one or more of the materials identified above in connection with the mounting hub  110  and the superabrasive cutting segment  120 . For example, the intermediate supporting element  140  may comprise polycrystalline diamond that may be integrally formed with the substrate  130 . For example, the intermediate supporting element  140  may comprise similar material as the superabrasive cutting segment  120  or the mounting hub  110 . 
     As described above, the substrate  130  may comprise tungsten carbide, such as cobalt-cemented tungsten carbide. For example, the substrate  130  may be preformed and have any suitable shape and/or size. In some embodiments, the substrate  130  may include non-superabrasive material(s), such as steel. 
     It should be appreciated that the superabrasive compact  100  (and any superabrasive cutting element described herein) may include any suitable combination of materials for the mounting hub  110 , superabrasive cutting segment  120 , substrate  130 , intermediate supporting element  140 , and combinations thereof, which may vary from one embodiment to the next. In some embodiments, the superabrasive cutting segment  120  may, generally, include material that has higher wear resistance (e.g., abrasion resistance, impact resistance, thermal stability etc.) than material(s) of other elements or components of the superabrasive compact  100 , such as material of the mounting hub  110 , and may be more expensive to manufacture than such materials. 
     The superabrasive compact  100  may be fabricated in any number of suitable way and/or with any number of suitable manufacturing techniques and processes. For example, the mounting hub  110 , the superabrasive cutting segment  120 , the intermediate supporting element  140 , or combinations thereof may be machined (e.g., electro-discharged machined (“EDM&#39;d”), wire EDM&#39;d, laser cut, laser ablated, ground, etc.) from a polycrystalline diamond compact including a polycrystalline diamond table integrally formed with a substrate or from a polycrystalline table (e.g., unleached). In an embodiment, the mounting hub  110 , the superabrasive cutting segment  120 , the intermediate supporting element  140 , or combinations thereof may be formed by rapid prototyping (e.g., 3-D printing, laser deposition manufacturing, IR beam deposition manufacturing, etc.). Moreover, as described above, the mounting hub  110 , the superabrasive cutting segment  120 , the intermediate supporting element  140 , or combinations thereof may be brazed together. In an embodiment, the wire diameter may be selected such as to accommodate a suitable amount and/or thickness of brazing material between the mating or bonding surfaces of the mounting hub  110 , the superabrasive cutting segment  120 , the intermediate supporting element  140 , or combinations thereof. 
     Moreover, the mounting hub  110  may be fabricated from a used or a partially worn polycrystalline diamond compact or bearing element including a polycrystalline diamond table integrally formed with a substrate. For example, the portion(s) of the worn polycrystalline diamond element can be cut away or removed to form one or more mounting features of the mounting hub  110 . The superabrasive cutting segment  120  can be fabricated from a used and/or worn cutting or bearing element. According to one or more embodiments, fabrication of superabrasive compact  100  may include reusing and/or recycling of existing worn polycrystalline diamond elements. 
     As mentioned above, the superabrasive cutting segment may be positioned, or pressed, or press-fit into the opening in the hub by the support element without any intervening elements therebetween.  FIG.  2    is a cross-sectional view of a superabrasive compact  100   a , according to an embodiment. In some embodiments, the superabrasive compact  100   a  and its materials, features, elements, or components may be similar to or the same as the superabrasive compact  100  ( FIGS.  1 A- 1 B ) and its corresponding material, features, elements, and components. For example, the superabrasive compact  100   a  may include mounting hub  110   a  and superabrasive cutting segment  120   a  at least partially secured to the mounting hub  110   a  by the mounting feature(s) thereof. The superabrasive compact  100   a  may include a substrate  130   a  that may position and/or secure the superabrasive cutting segment  120   a  at least partially in the mounting hub  110   a . The materials, features, elements, components, described above with respect to mounting hub  110   a , superabrasive cutting segment  120   a , or substrate  130   a  may be similar to or the same as the materials, features, elements, components, described above with respect to mounting hub  110 , superabrasive cutting segment  120 , and substrate  130  of the superabrasive compact  100  ( FIGS.  1 A- 1 B ). 
     In some embodiments, the superabrasive cutting segment  120   a  may have substantially the same thickness as the mounting hub  110   a . Moreover, in an embodiment, the substrate  130   a  may have a substantially planar upper surface that may at least partially contact a bottom surface of the mounting hub  110   a  and superabrasive cutting segment  120   a , thereby positioning the superabrasive cutting segment  120   a  into and/or relative to the mounting feature(s) of the mounting hub  110   a  and/or securing together the mounting hub  110   a  and/or superabrasive cutting segment  120   a . In alternative or additional embodiments, the upper surface of the substrate  130   a  may be non-planar (e.g., patterned, such as to have ridges, indentations, etc., to be concave, convex, irregularly shaped, etc.). As described above, the mounting hub  110   a , superabrasive cutting segment  120   a , substrate  130   a , or combinations thereof may be brazed together or otherwise secured together (e.g., metallurgically) at one or more interfaces therebetween (e.g., at adjacent surfaces thereof). 
     Generally, the superabrasive cutting segment and/or the mounting hub may have any suitable thickness. For example, the superabrasive cutting segment may be thinner than the hub or vice versa (e.g., as shown in  FIGS.  1 A- 1 B  and described above).  FIG.  3    illustrates a superabrasive compact  100   b  according to an embodiment. In some embodiments, the superabrasive compact  100   b  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a  ( FIGS.  1 A- 2   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   b  may include mounting hub  110   b  and superabrasive cutting segment  120   b  at least partially secured to assembled with, or positioned by the mounting hub  110   b  by mounting feature  113   b  thereof. The superabrasive compact  100   b  may include a substrate  130   b  positioning the superabrasive cutting segment  120   b  at least partially in the mounting hub  110   b . The materials, features, elements, components, described above with respect to mounting hub  110   b , superabrasive cutting segment  120   b , or substrate  130   b  may be similar to or the same as the mounting hub  110 , superabrasive cutting segment  120 , substrate  130  ( FIGS.  1 A- 1 B ). 
     In the illustrated embodiment, the superabrasive cutting segment  120   b  has a smaller thickness t 1  than the thickness t 2  mounting hub  110   b . For example, a portion of the substrate  130   b  may extend into the opening in the mounting hub  110   b  to press and secure the superabrasive cutting segment  120   b  into the mounting feature  113   b  of the superabrasive cutting segment  120   b . For example, the substrate  130   b  may have a protrusion  131   b  extending outward from a base  132   b . In an embodiment, the protrusion  131   b  may generally have any suitable peripheral shape that may be sized and configured to fit partially into the mounting feature  113   b  of the mounting hub  110   b.    
     For example, the protrusion  131   b  may be shaped and sized such that the peripheral surface thereof may contact and/or may be positioned adjacent to an interior surface defining the mounting feature  113   b  of the mounting hub  110   b  (e.g., a portion of the peripheral surface of the substrate  130   b , such as at least a portion of the peripheral surface of the protrusion  131   b , may have a substantially complementary shape to at least a portion of the surface that defines the mounting feature  113   b ). As mentioned above, in some embodiments, the mounting feature  113   b  may include one or more tapered portions. The peripheral surface of the protrusion  131   b  may have one or more corresponding tapered portions. In an embodiment, the protrusion  131   b  may be sized such as to form or define a space between the peripheral surface thereof and the interior surface defining the mounting feature  113   b  (e.g., such that the substrate  130   b  is positioned inside the mounting feature  113   b  in the mounting hub  110   b  without contact between one or more portions of the peripheral surface of the protrusion  131   b  and the interior surface of the mounting feature  113   b ). 
     Furthermore, in some embodiments, an upper surface  133   b  of the protrusion  131   b  may be sized and/or configured to be substantially the same as a bottom surface  121   b  of the superabrasive cutting segment  120   b . For example, the protrusion  131   b  may support the superabrasive cutting segment  120   b  relative to the mounting feature  113   b  of the mounting hub  110   b , such that the bottom surface  121   b  of superabrasive cutting segment  120   b  does not extend beyond the upper surface  133   b  of protrusion  131   b . In an embodiment, the mounting hub  110   b , superabrasive cutting segment  120   b , and substrate  130   b  may collectively define a substantially solid assembly (e.g., substantially without voids in superabrasive compact  100   b ). For example, the mounting hub  110   b , superabrasive cutting segment  120   b , substrate  130   b , or combinations thereof may be assembled together to define a substantially solid superabrasive compact  100   b  that may be substantially cylindrical. 
     Moreover, as described above, the mounting hub  110   b , superabrasive cutting segment  120   b , substrate  130   b , or combinations thereof may be brazed together at one or more interfaces therebetween. For example, any voids present before brazing may be filled by the braze material that may metallurgically bond together the mounting hub  110   b , superabrasive cutting segment  120   b , and/or substrate  130   b . In an embodiment, the superabrasive compact  100   b  may include at least one braze layer bonding together and/or spacing apart the superabrasive cutting segment, mounting hub, intermediate supporting element, support element, or combinations thereof. 
       FIG.  4    illustrates a superabrasive compact  100   c  according to an embodiment. In some embodiments, the superabrasive compact  100   c  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b  ( FIGS.  1 A- 3   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   c  may include mounting hub  110   c , superabrasive cutting segment  120   c , substrate  130   c , and intermediate supporting element  140   c , which may be similar to or the same as the mounting hub  110 , superabrasive cutting segment  120 , substrate  130 , and intermediate supporting element  140  of the superabrasive compact  100  ( FIGS.  1 A- 1 B ). 
     In some embodiments, the superabrasive compact  100   c  may include a deformable material  150   c  (e.g., a relatively soft material layer) positioned between the superabrasive cutting segment  120   c  and the intermediate supporting element  140   c . For example, the deformable material  150   c  may include material that may be softer than the material of the superabrasive cutting segment  120   c  and/or of the intermediate supporting element  140   c . Generally, any number of suitable materials may be used in the deformable material  150   c , such as brass, copper, aluminum, tin, steel, combinations of the foregoing, alloys of the foregoing, etc. Moreover, the deformable material  150   c  may have any suitable thickness. 
     In an embodiment, the deformable material  150   c  may be formed by and/or may include a braze material. For example, the deformable material  150   c  may bond together the superabrasive cutting segment  120   c  and the intermediate supporting element  140   c . Alternatively or additionally, the deformable material  150   c  may be bonded to the superabrasive cutting segment  120   c  and to the substrate  130   c . In at least one embodiment, the deformable material  150   c  may secure together (e.g., bond together) the superabrasive cutting segment  120   c , the mounting hub  110   c , and the substrate  130   c.    
     In some embodiments, the superabrasive cutting segment  120   c , the deformable material  150   c , and intermediate supporting element  140   c  may be unbonded one from another (e.g., in contact with one another, but without metallurgical bonding therebetween). For example, the substrate  130   c  may be bonded to the mounting hub  110   c  and may press or position the intermediate supporting element  140   c , deformable material  150   c , and/or superabrasive cutting segment  120   c  into mounting feature  113   c  of the mounting hub  110   c . Such a configuration may secure the superabrasive cutting segment  120   c  relative to the mounting hub  110   c . In an embodiment, the material of the deformable material  150   c  may be resilient (e.g., may be at least partially elastically deformable during operation of the superabrasive compact  100   c ). For example, the deformable material  150   c  may allow the superabrasive cutting segment  120   c  to move downward and/or toward the substrate  130   c  of the superabrasive compact  100   c.    
     Under some operating conditions, the upper surface of the superabrasive cutting segment  120   c  may be below the upper surface of the mounting hub  110   c  (e.g., when a selected pressure or force is applied to the superabrasive cutting segment  120   c ), and the deformable material  150   c  may be at least partially elastically deformed and/or compressed. Hence, for example, when the deformable material  150   c  is compressed during operation and the applied force is removed or reduced, the deformable material  150   c  may bias the superabrasive cutting segment  120   c  upward, such that the upper surface of the superabrasive cutting segment  120   c  is substantially coplanar with the upper surface of the mounting hub  110   c.    
     As described above, the mounting hub and the superabrasive cutting segment may have any number of suitable thicknesses and/or relative thicknesses, which may vary from one embodiment to the next.  FIG.  5    illustrates a superabrasive compact  100   d  according to an embodiment. In some embodiments, the superabrasive compact  100   d  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c  ( FIGS.  1 A- 4   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   d  may include mounting hub  110   d , superabrasive cutting segment  120   d , substrate  130   d , and intermediate supporting element  140   d , which may be similar to or the same as the mounting hub  110 , superabrasive cutting segment  120 , substrate  130 , and intermediate supporting element  140 , respectively, of the superabrasive compact  100  ( FIGS.  1 A- 1 B ). 
     In an embodiment, the superabrasive cutting segment  120   d  may have a greater thickness than the intermediate supporting element  140   d , but less than the mounting hub  110   d . Generally, the intermediate supporting element  140   d  may include any suitable material. In an embodiment, the intermediate supporting element  140   d  may include a superabrasive material, such as tungsten carbide, polycrystalline diamond (e.g., leached, partially leached, or unleached), etc. Alternatively or additionally, at least a portion of the intermediate supporting element  140   d  may include a material that is generally softer and/or more easily deformable than the material of the superabrasive cutting segment  120   d . For example, the superabrasive cutting segment  120   d  may include thermally-stable polycrystalline diamond, and the intermediate supporting element  140   d  may include a steel alloy, a brass alloy, a bronze alloy or another suitable metal alloy. 
     The substrate  130   d  and the mounting hub  110   d  may be bonded together, and/or the intermediate supporting element  140   d  and the substrate  130   d  may be bonded together. As described above, the mounting hub  110   d  and superabrasive cutting segment  120   d  may be brazed or otherwise bonded together, and/or the superabrasive cutting segment  120   d  and the intermediate supporting element  140   d  may be brazed or otherwise bonded together. In other embodiments, the superabrasive cutting segment  120   d  may be unbonded from the mounting hub  110   d  and/or from the intermediate supporting element  140   d  (e.g., as described above in connection with  FIG.  4   ). Further, the intermediate supporting element  140   d  may be bonded to the substrate  130   d  or may be unbonded therefrom. 
     As mentioned above, the mounting hub and/or the superabrasive cutting segment may have chamfers, radii (or fillet), etc., which may be the same size or may have different sizes. Alternatively, the mounting hub and/or the superabrasive cutting segment may have no chamfer.  FIG.  6    illustrates a superabrasive compact  100   e  according to an embodiment. In some embodiments, the superabrasive compact  100   e  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d  ( FIGS.  1 A- 5   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   e  may include mounting hub  110   e , superabrasive cutting segment  120   e , and substrate  130   e , which may be similar to or the same as the mounting hub  110   a , superabrasive cutting segment  120   a , and substrate  130   a  of the superabrasive compact  100   a  ( FIG.  2   ). 
     In an embodiment, the mounting hub  110   e  may have a substantially sharp corner or edge  112   e  that may be formed between the peripheral surface and the upper surface of the mounting hub  110   e . Under some operating conditions, at least a portion of the sharp edge  112   e  may engage and fail material during operation. Furthermore, the superabrasive cutting segment  120   e  may have a sharp corner or edge, which may be defined between an upper surface and a portion peripheral surface of the superabrasive cutting segment. At least a portion of such edge may engage and fail material during operation. 
     As described above, the mounting hub and the superabrasive cutting segment may have any number of suitable complementary shapes, which may vary from one embodiment to another.  FIG.  7    illustrates a superabrasive compact  100   f  according to an embodiment. In some embodiments, the superabrasive compact  100   f  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e  ( FIGS.  1 A- 6   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   f  may include mounting hub  110   f  and superabrasive cutting segment  120   f  that may be similar to or the same as the mounting hub  110  and superabrasive cutting segment  120  of the superabrasive compact  100  ( FIGS.  1 A- 1 B ). 
     In an embodiment, the mounting hub  110   f  may include a mounting feature  113   f  that may secure the superabrasive cutting segment  120   f  (e.g., the mounting feature  113   f  may be an opening that has a substantially elliptical or partially elliptical cross-sectional shape, and the superabrasive cutting segment  120   f  may have a corresponding cross-sectional shape). For example, a surface or edge of the superabrasive cutting segment  120   f  may extend beyond the mounting feature  113   f . At least a portion of such surface or edge may engage and/or fail material during operation. Furthermore, the exposed edge of the superabrasive cutting segment  120   f  may be substantially continuous with and/or may lie along the peripheral surface (e.g., a substantially cylindrical surface) or edge(s) of the mounting hub  110   f . For example, the cutting edge of the superabrasive cutting segment  120   f  may be formed by an upper surface  121   f  and peripheral surface of the superabrasive cutting segment  120   f , and the edge of the mounting hub  110   f  may be formed by an upper surface  111   f  and peripheral surface of the superabrasive compact  100   f ). In at least one embodiment, the partial shape of the mounting feature  113   f  may have a side opening within which a portion of the superabrasive cutting segment  120   f  is positioned. 
     As described above, at least a portion of the mounting feature  113   f  may be defined by tapered or angled walls, and corresponding one or more portions of the mounting hub  110   f  may have a substantially complementary taper(s). More specifically, for example, the substantially complementary shapes of the mounting feature  113   f  and the peripheral surface of the superabrasive cutting segment  120   f  may be such that the mounting feature  113   f  prevents or limits axial movement of the superabrasive cutting segment  120   f  relative to the mounting hub  110   f  (e.g., along longitudinal axis  10 ). Moreover, the elliptical or partially elliptical cross-sectional shape of the mounting feature  113   f  may prevent or limit movement of the mounting hub  110   f  along one or more directions perpendicular to the longitudinal axis  10  (e.g., along one or more directions in a plane that is substantially coplanar with the upper surface  111   f  and/or upper surface  121   f ). 
     As described above, in some embodiments, the mounting feature  113   f  may have a downward-facing taper. It should be appreciated that the terms “mounting hub” and “superabrasive cutting segment” are used for descriptive purposes only and should not be interpreted to require or connote a specific shape or structure therefor. For example, a superabrasive compact may have a mounting hub that has an upper surface shape that is similar to or the same as cross-sectional shape of the superabrasive cutting segment  120   f  and a superabrasive cutting segment that has an upper surface shape that is similar to or the same as the mounting hub  110   f.    
     In an embodiment, a portion of the cross-sectional shape of the mounting feature of the mounting hub and of the superabrasive cutting segment may include a key, slot, or dove-tail feature.  FIG.  8 A  illustrates a superabrasive compact  100   g  according to an embodiment. In some embodiments, the superabrasive compact  100   g  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f  ( FIGS.  1 A- 7   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   g  may include mounting hub  110   g  and superabrasive cutting segment  120   g  that may be similar to or the same as the mounting hub  110  and superabrasive cutting segment  120  of the superabrasive compact  100  ( FIGS.  1 A- 1 B ). 
     In an embodiment, the mounting hub  110   g  has a mounting feature  113   g  that at least partially secures the superabrasive cutting segment  120   g  relative to the mounting hub  110   f . For example, the cross-sectional shape of the mounting feature  113   g  includes a dove-tail feature  114   g  and substantially straight portions  115   g ,  116   g  extending from the key portion  114   g . The straight portions  115   g ,  116   g  may form or define any suitable angle therebetween. 
     In an embodiment, the key portion  114   g  may include or may be partially defined by opposing inner radii  114   g ′, outer radii  114   g ″ transitioning from the inner radii  114   g ′, and a connecting segment  114   g ′″ (e.g., a straight segment) connecting the opposing inner radii  114   g ′. In such an embodiment, the key portion  114   g  may limit or prevent movement of the superabrasive cutting segment  120   g  relative to the mounting hub  110   g  (e.g., along one or more directions in a plane that is substantially coplanar with or substantially parallel to upper surface  111   g  of the mounting hub  110   g  and/or upper surface  121   g  of the superabrasive cutting segment  120   g ). 
     As mentioned above, the straight portions  115   g ,  116   g  may define any suitable angle therebetween (e.g., 30 degrees, 45 degrees, 90 degrees, etc.). Moreover, the straight portions  115   g ,  116   g  may extend to the periphery of the mounting hub  110   g , such as to form an opening or gap in the peripheral surface of the mounting hub  110   g . More specifically, for example, a portion of the peripheral surface of the superabrasive cutting segment  120   g  may extend in the gap (e.g., to close the gap) in the periphery of the mounting hub  110   g  at locations where the straight portions  115   g ,  116   g  intersect the periphery and/or end at the periphery of the mounting hub  110   g . In an embodiment, cutting edge of the superabrasive cutting segment  120   g  may be formed or defined substantially at the periphery of the superabrasive cutting segment  120   g  and between the straight portions  115   g ,  116   g.    
     In some embodiments, the superabrasive cutting segment  120   g  may be supported by multiple elements and/or components of the superabrasive compact  100   g . As shown in  FIG.  8 B , for example, the superabrasive cutting segment  120   g  may be supported by a first intermediate supporting element  140   g  and a second intermediate supporting element  150   g . For example, the first and second intermediate supporting elements may be positioned between the superabrasive cutting segment  120   g  and the substrate  130   g.    
     Generally, the first and second intermediate supporting elements  140   g ,  150   g  may comprise any suitable material(s). In an embodiment, the first intermediate supporting element  140   g  includes cemented tungsten carbide, and the second intermediate supporting element  150   g  includes polycrystalline diamond. For example, the first and second intermediate supporting elements  140   g ,  150   g  may be unbonded to one another or may be bonded together. Moreover, the second intermediate supporting element  150   g  and the superabrasive cutting segment  120   g  may be unbonded to one another or may be bonded together. 
     In some embodiments, the second intermediate supporting element  150   g  may be positioned and/or oriented at a selected angle relative to the superabrasive cutting segment  120   g . For example, an interface between the superabrasive cutting segment  120   g  and the second intermediate supporting element  150   g  may be non-parallel to the upper surface  121   g  of the superabrasive cutting segment  120   g . In some embodiments, the upper surface of the second intermediate supporting element  150   g  and/or the interface between the superabrasive cutting segment  120   g  and the second intermediate supporting element  150   g  may be oriented substantially perpendicular to an intended or an anticipated cutting force F c  that may be applied to the superabrasive cutting segment  120   g  during operation of the superabrasive compact  100   g.    
     In some embodiments, the mounting hub  110   g  may include one or more elements and/or layers. In the illustrated embodiment, the mounting hub  110   g  includes a lower portion  113   g  and an upper portion  115   g . For example, the lower portion  113   g  may include tungsten carbide and the upper portion  115   g  may include polycrystalline diamond (e.g., a layer or table of polycrystalline diamond). Additionally or alternatively, the upper portion  115   g  may include and/or may be defined by a coating that may be applied to, formed on, and/or bonded to the lower portion  113   g.    
     As described above, one or more portions of the mounting feature(s) may be tapered in a manner that prevents or limits axial movement of the superabrasive cutting segment(s) relative to the mounting hub. Additionally or alternatively, one or more portions of the mounting feature(s) may be substantially parallel relative to the longitudinal axis of the superabrasive compact. Moreover, any one or more portions of any sidewall that at least partially defines the mounting feature and/or a complementary shape of the superabrasive cutting segment may be substantially straight or may extend substantially parallel to the longitudinal axis of the superabrasive compact. 
       FIG.  8 C  illustrates a superabrasive compact  100   g ′ that includes a mounting feature  113   g ′ that has one or more straight or non-tapered sidewall portions. In some embodiments, the superabrasive compact  100   h  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′ ( FIGS.  1 A- 8 B ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   g ′ may include a mounting hub  110   g ′, a superabrasive cutting segment  120   g ′, a substrate  130   g ′, and first and second intermediate supporting elements  140   g ′,  150   g ′ positioned between the substrate  130   g ′ and the superabrasive cutting segment  120   g ′, which may be similar to the mounting hub  110   g , superabrasive cutting segment  120   g , substrate  130   g , and first and second intermediate supporting elements  140   g ,  150   g  of the superabrasive compact  100   g  ( FIG.  8 B ). 
     In the illustrated example, the mounting hub  110   g ′ has a mounting feature  113   g ′ that includes a first straight portion  117   g ′, a second straight portion  119   g ′, and a tapered portion  118   g ′ extending therebetween. For example, one or more portions of one, some, or each of the side walls that define the mounting feature  113   g ′ may be straight, and/or one or more portions of one, some, or each of the side walls that define the mounting feature  113   g ′ may be tapered (e.g., may have a downward-facing taper, as shown in  FIG.  8 C ). In some embodiments, the tapered portion  118   g ′ may extend approximately the thickness of the second intermediate supporting element  150   g ′. Furthermore, in at least one embodiment, the sidewall defining the tapered portion  118   g ′ may be substantially perpendicular to the interface between the second intermediate supporting element  150   g ′ and the superabrasive cutting segment  120   g ′ (e.g., the sidewall may be oriented substantially parallel to a force that is intended to be applied to the superabrasive compact  100   g ′ during operation). 
     It should be appreciated that the portions of the mounting feature, which extend from the key portion thereof and define at least a portion of the space for the cutting edge of the superabrasive cutting segment, may have any suitable shape. For example, such portions may have generally arcuate shapes.  FIG.  9    illustrates a superabrasive compact  100   h  according to an embodiment. In some embodiments, the superabrasive compact  100   h  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   g ′ ( FIGS.  1 A- 8 C ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   h  may include mounting hub  110   h  and superabrasive cutting segment  120   h  that may be similar to or the same as the mounting hub  110   g  and superabrasive cutting segment  120   g , respectively, of the superabrasive compact  100   g  ( FIG.  8 A ). 
     In an embodiment, the mounting hub  110   h  may include a mounting feature  113   h  that has a key portion  114   h  that may be similar to or the same as the key portion  114   g  of the mounting hub  110   g  ( FIG.  8 A ). In the illustrated embodiment, the mounting feature  113   h  may include arcuate segments  115   h ,  116   h  extending from the key portion  114   h  to the periphery of the mounting hub  110   h . For example, the arcuate segments  115   h ,  116   h  may define concave shapes or spaces of the mounting hub  110   h  into which corresponding portions of the superabrasive cutting segment  120   h  may be positioned. 
     Alternatively, such segments may form or define convex portions of the mounting feature of the mounting hub.  FIG.  10    illustrates a superabrasive compact  100   k  according to an embodiment. In some embodiments, the superabrasive compact  100   k  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h  ( FIGS.  1 A- 9   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   k  may include mounting hub  110   k  and superabrasive cutting segment  120   k  that may be similar to or the same as the mounting hub  110   g  and superabrasive cutting segment  120   g , respectively, of the superabrasive compact  100   g  ( FIG.  8 A ). 
     The mounting hub  110   k  may include a mounting feature  113   k  that has a key portion  114   k  that may be similar to or the same as the key portion  114   g  of the mounting hub  110   g  ( FIG.  8 A ). In the illustrated embodiment, the mounting feature  113   k  includes arcuate portions  115   k ,  116   k  extending from the key portion  114   k  to the periphery of the mounting hub  110   k . More specifically, for example, the arcuate portions  115   k ,  116   k  may form or define convex portions of the mounting feature hub  110   k  that may abut corresponding portions of the superabrasive cutting segment  120   k.    
     As described above, the superabrasive cutting segment(s) may include or may form a cutting edge of the superabrasive compact. Moreover, the cutting edge of the superabrasive compact may have any suitable length (e.g., may extend about circumference of the periphery of the superabrasive compact to any suitable length). For example, the cutting edge may extend about majority or the entire periphery or perimeter of the superabrasive compact.  FIGS.  11 A- 11 B  illustrate a superabrasive compact  100   m  according to an embodiment. In particular,  FIG.  11 A  is a top plan view of the superabrasive compact  100   m , and  FIG.  11 B  is a cross-sectional view of the superabrasive compact  100   m , as shown in  FIG.  11 A . In some embodiments, the superabrasive compact  100   m  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k  ( FIGS.  1 A- 10   ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   m  may include mounting hub  110   m , superabrasive cutting segment  120   m  including chamfer  112   m , and substrate  130   m , which may be similar to or the same as the mounting hub  110 , superabrasive cutting segment  120 , and substrate  130 , respectively, of the superabrasive compact  100  ( FIGS.  1 A- 1 B ). 
     In the illustrated embodiment, the superabrasive cutting segment  120   m  has a generally annular or toroidal shape, and the mounting hub  110   m  has a substantially frusto-conical shape. Moreover, the mounting hub  110   m  may include a mounting feature  113   m  that has a downward-facing taper, such as to secure the superabrasive cutting segment  120   m  to the substrate  130   m  (e.g., the mounting hub  110   m  and/or the superabrasive cutting segment  120   m  may be bonded, for example, brazed, to the substrate  130   m ). As shown in  FIG.  11 A , the superabrasive cutting segment  120   m  may include an upper surface  121   m  that extends about the periphery of the superabrasive cutting segment  120   m . In an embodiment, the upper surface  121   m  may be substantially continuous (e.g., uninterrupted). For example, the superabrasive cutting segment  120   m  may be solid, monolithic, or unitary. 
     As described above, the mounting hub  110   m  (e.g., at mounting feature  113   m ) may secure the superabrasive cutting segment  120   m  to the substrate  130   m . For example, the mounting hub  110   m  may be bonded to the superabrasive cutting segment  120   m . Additionally or alternatively, the superabrasive cutting segment  120   m  may be bonded to the substrate  130   m . Optionally, in at least one embodiment, the superabrasive compact  100   m  may include an intermediate supporting element positioned between the superabrasive cutting segment  120   m  and the substrate  130   m  (e.g., the superabrasive cutting segment  120   m  may be bonded to the intermediate supporting element that may be bonded to the substrate  130   b . In some embodiments, as mentioned above, the superabrasive cutting segment  120   m  may be unbonded from the mounting hub  110   m  and/or substrate  130   m . In some embodiments, the superabrasive cutting segment  120   m  may be rotatable about mounting hub  110   m.    
     As noted above, a superabrasive compact may have a mounting hub that has a shape (e.g., a cross-sectional shape) that is similar to or the same as cross-sectional shape of any superabrasive cutting segment described herein, and the superabrasive cutting segment that has a shape (e.g., cross-sectional shape) that is similar to or the same as any mounting hub described herein. As shown in  FIG.  11 C , a superabrasive compact  100   m ′ may include a superabrasive cutting segment  120   m ′ surrounded by mounting hub  110   m ′ and secured to substrate  130   m ′ thereby. In some embodiments, the superabrasive compact  100   m ′ and its material, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m  ( FIGS.  1 A- 11 B ). 
     For example, a perimeter of the superabrasive cutting segment  120   m ′ may be partially laterally surrounded by the mounting hub  110   m ′. In an embodiment, the top surface shape of the superabrasive cutting segment  120   m ′ may be substantially the same as the shape of a top opening of the mounting hub  110   m  ( FIG.  11 A ), and the shape of a top opening of the mounting hub  110   m ′ may be substantially the same as the cross-sectional shape of the superabrasive cutting segment  120   m ′ ( FIG.  11 C ). It should be appreciated, however, that as shown in  FIG.  11 C , the superabrasive cutting segment  120   m ′ has a downward-facing taper (e.g., similar to the superabrasive cutting segment  120  ( FIGS.  1 A- 1 B )). 
     In an embodiment, the mounting hub  110   m ′ may include a lower portion  113   m ′ and an upper portion  115   m ′. For example, the lower portion  113   m ′ may include cemented tungsten carbide (e.g., cobalt-cemented tungsten carbide), and an upper portion may include polycrystalline diamond (e.g., the upper portion  115   m ′ may be a thin layer of polycrystalline diamond). In the illustrated embodiment, the superabrasive cutting segment  120   m ′ is secured to the substrate  130   m ′ without intervening elements therebetween. Alternatively, as shown in  FIG.  11 D , a superabrasive compact  100   m ″ may include an intermediate supporting element  140   m ″ and deformable material  150   m ″ positioned between superabrasive cutting segment  120   m ″ and substrate  130   m ″. In some embodiments, the superabrasive compact  100   m ″ and its material, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′ ( FIGS.  1 A- 11 C ). 
     As shown in  FIG.  11 D , the superabrasive compact  100   m ″ includes superabrasive cutting segment  120   m ′″, mounting hub  110   m ′″, and substrate  130   m ′″ that may be the same or similar to the mounting hub  110   m ′, superabrasive cutting segment  120   m ′, and substrate  130   m ′, respectively, of the superabrasive compact  100   m ′ ( FIG.  11 C ). In some embodiments, the mounting hub  110   m ″ includes lower portion  113   m ″ and  115   m ″, similar  113   m ′ and  115   m ′ of the mounting hub  110   m ′ ( FIG.  11 C ). As mentioned above, in the illustrated embodiment, the superabrasive compact  100   m ″ includes the intermediate supporting element  140   m ″ and deformable material  150   m ″ positioned between the superabrasive cutting segment  120   m ″ and the substrate  130   m ″ (e.g., similar to the intermediate supporting element  140   c  and deformable material  150   c  shown in ( FIG.  4   ). 
     In some embodiments, the superabrasive compact may include multiple superabrasive cutting segments.  FIG.  12    illustrates a superabrasive compact  100   n  according to an embodiment. In some embodiments, the superabrasive compact  100   n  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″ ( FIGS.  1 A- 11 D ) and their corresponding materials, features, elements, and components. For example, the superabrasive compact  100   n  may include mounting hub  110   n , superabrasive cutting segment  120   n , which may be similar to or the same as the mounting hub  110   g  and superabrasive cutting segment  120   g , respectively, of the superabrasive compact  100   g  ( FIG.  8 A ). 
     In the illustrated embodiment, the superabrasive cutting segment  120   n  and superabrasive cutting segment  120   n ′ may be similar to or the same as superabrasive cutting segment  120   g  ( FIG.  8 A ). For example, the superabrasive compact  100   n  includes opposing superabrasive cutting segment  120   n  and superabrasive cutting segment  120   n ′. In an embodiment, the superabrasive cutting segment  120   n  and superabrasive cutting segment  120   n ′ may be mirrored about a centerline of the superabrasive compact  100   m  (e.g., the superabrasive cutting segment  120   n  may be oriented at 180 degrees relative to the superabrasive cutting segment  120   n ′). Moreover, the mounting hub  110   n  may include mounting feature  113   n  and mounting feature  113   n ′ that may correspond to and at least partially secure the respective superabrasive cutting segment  120   n  and superabrasive cutting segment  120   n ′ (e.g., in the manner described above). 
     As noted above, the superabrasive compacts may include any number of superabrasive cutting segments.  FIG.  13   . illustrates a superabrasive compact  100   p  that includes three superabrasive cutting segments  120   p ,  120   p ′,  120   p ′″, according to an embodiment. In some embodiments, the superabrasive compact  100   p  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n  ( FIGS.  1 A- 12   ) and their corresponding materials, features, elements, and components. 
     For example, the superabrasive cutting segments  120   p ,  120   p ′, and  120   p ′″ may be similar to or the same as the superabrasive cutting segment  120   g  of the superabrasive compact  100   g  ( FIG.  8 A ). More specifically, for example, the superabrasive cutting segments  120   p ,  120   p ′, and  120   p ″ may be shaped similar to the superabrasive cutting segment  120   g  ( FIG.  8 A ), as described above, and may be sized such as to fit about and/or define at least a portion of the periphery of the superabrasive compact  100   p  (as illustrated in  FIG.  13   ). In particular, the superabrasive cutting segments  120   p ,  120   p ′,  120   p ″ define corresponding edges and/or portions of the superabrasive compact  100   p.    
     In the illustrated embodiment, the superabrasive cutting segments  120   p ,  120   p ′, and  120   p ″ are arranged at about 120 degree angles relative to each other (e.g., relative to centerlines or bisectors thereof dividing the respective superabrasive cutting segments  120   p ,  120   p ′, and  120   p ″). It should be appreciated, however, that the superabrasive compact  100   p  may include any number of the superabrasive cutting segments that may be positioned at any suitable arrangement relative to one another (e.g., at any suitable angles). Moreover, while in the illustrated embodiment the superabrasive cutting segments  120   p ,  120   p ′, and  120   p ″ extend about and/or define only a portion of the periphery of the superabrasive compact  100   p , in at least one embodiment, the superabrasive cutting segments may extend about and/or form the entire periphery or perimeter of the superabrasive compact. 
     For example, as mentioned above, mounting features  113   p ,  113   p ′, and  113   p ″ may have portions extending from the key portion to the periphery of the mounting hub  110   p  and may define any suitable angle therebetween. Increasing the angle defined by the portions of the mounting features  113   p ,  113   p ′, and  113   p ″ increases the portion of the periphery or perimeter of the superabrasive compact  100   p  that is defined by one or more portions of the superabrasive cutting segments (e.g., the angles may be increased such that the superabrasive cutting segments form or define the entire periphery or perimeter that defines a boundary of the upper surface of the superabrasive compact).  FIG.  14    illustrates a superabrasive compact  100   q  to include superabrasive cutting segments  120   q ,  120   q ′, and  120   q ″ that, according to an embodiment, collectively define or form the perimeter or periphery circumscribing the upper surface of the superabrasive compact  100   q . In some embodiments, the superabrasive compact  100   q  and its materials, features, elements, or components may be similar to or the same as any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n ,  100   p  ( FIGS.  1 A- 13   ) and their corresponding materials, features, elements, and components. 
     For example, each of the superabrasive cutting segment  120   q , superabrasive cutting segment  120   q ′, and superabrasive cutting segment  120   q ″ may define an approximately 120 degree angle (e.g., as defined between portion  117   q  and  118   q ). As mentioned above, the mounting hub  110   q  may have corresponding key portions and portions extending therefrom to the mounting hub  110   q . In the illustrated embodiment, the mounting hub  110  includes mounting features  113   q ,  113   q ′, and  113   q ″ that secure corresponding ones of the superabrasive cutting segments  120   q ,  120   q ′, and  120   q ″. For example, the mounting feature  113   q  may include a key portion  114   q  and substantially straight portions  115   q - 118   q  extending therefrom and to the periphery or perimeter of the mounting hub  110   q.    
     In the embodiment shown in  FIG.  14   , the portions  115   q  and  116   q  extend from the key portion  114   q  and define a first angle therebetween, and the portions  117   q  and  118   q  extend from the respective portions  115   q  and  116   q  to the periphery of the mounting hub  110   q  and define a second angle. The mounting feature  113   q  may be the same or similar to the mounting feature  113   q ′ or mounting feature  113   q ″. Again, it should be appreciated that the shape of any of the mounting features  113   q ,  113   q ′, and  113   q ″ may vary from one embodiment to the next (e.g., any of the portions may be arcuate, irregularly shaped, etc.). 
     In some embodiments, the top surfaces, side surfaces, and/or working surfaces of any of the superabrasive cutting segments disclosed herein may be contoured, nonplanar, planar, faceted, pointed, rounded, concave, convex, curved, combinations thereof, or otherwise selectively shaped.  FIG.  15 A  illustrates a superabrasive compact  100   s  according to an embodiment. In some embodiments, the superabrasive compact  100   s  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n ,  100   p , or  100   q  and their corresponding materials, features, elements, and components. As shown in  FIG.  15 A , mounting hub  110   s  may comprise a superabrasive table  97   s  that is bonded to a substrate  111   s . In other embodiments, the superabrasive compact  100   s  may include the mounting hub  110   s  and a superabrasive cutting segment  120   s , which may be similar to or the same as the mounting hub  110   g  and superabrasive cutting segment  120   g , respectively, of the superabrasive compact  100   g  ( FIG.  8 A ). As shown in  FIG.  15 A , the superabrasive cutting segment  120   s  may be coupled with the mounting feature  113   s  of the mounting hub  110   s . Further,  FIG.  15 A  shows an embodiment of cutting segment  120   s  including an upper surface  121   s  which is offset from upper surface  99   s  of mounting hub  110   s  (e.g., the upper surface  121   s  of the cutting segment  120   s  may protrude outward past the upper surface  99   s  of the mounting hub  110   s ). Upper surface  121   s  may be contoured, nonplanar, planar, faceted, pointed, rounded, concave, convex, curved, combinations thereof, or otherwise selectively shaped. The superabrasive compact  100   s  may include an intermediate supporting element  140   s , which may support, at least partially contact, or about a bottom surface of the superabrasive cutting segment  120   s.    
       FIG.  15 B  illustrates a superabrasive compact  100   t  according to an embodiment. In some embodiments, the superabrasive compact  100   t  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n ,  100   p , or  100   q  and their corresponding materials, features, elements, and components. As shown in  FIG.  15 B , mounting hub  110   t  may comprise a superabrasive table  97   t  which is bonded to a substrate  111   t . In other embodiments, the superabrasive compact  100   t  may include mounting hub  110   t  and a superabrasive cutting segment  120   t , which may be similar to or the same as the mounting hub  110   g  and superabrasive cutting segment  120   g , respectively, of the superabrasive compact  100   g  ( FIG.  8 A ). As shown in  FIG.  15 B , the superabrasive cutting segment  120   t  may be coupled with the mounting feature  113   t  of the mounting hub  110   t . Further,  FIG.  15 B  shows an embodiment of cutting segment  120   t  including an upper surface  121   s  and peripheral surface  98   t , which converge to form pointed region  101   t . Upper surface  121   t  and/or peripheral surface  98   t  may be contoured, nonplanar, planar, faceted, pointed, rounded, concave, convex, curved, combinations thereof, or otherwise selectively shaped. 
       FIG.  15 C  illustrates a superabrasive compact  100   u  according to an embodiment. In some embodiments, the superabrasive compact  100   u  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n ,  100   p ,  100   q ,  100   s  and their corresponding materials, features, elements, and components. As shown in  FIG.  15 C , mounting hub  110   u  may comprise a superabrasive table  97   u  which is bonded to a substrate  111   u . In other embodiments, the superabrasive compact  100   u  may include mounting hub  110   u  and a superabrasive cutting segment  120   u , which may be similar to or the same as the mounting hub  110   g  and superabrasive cutting segment  120   g , respectively, of the superabrasive compact  100   g  ( FIG.  8 A ). As shown in  FIG.  15 C , the superabrasive cutting segment  120   u  may be coupled with the mounting feature  113   u  of the mounting hub  110   u . Further,  FIG.  15 C  shows one embodiment of cutting segment  120   u  including an upper surfaces  103   u  and  105   u , which converge to form ridge feature  101   u . Upper surface  103   u  and/or upper surface  105   u  may be contoured, nonplanar, planar, faceted, pointed, rounded, concave, convex, curved, combinations thereof, or otherwise selectively shaped. 
     Furthermore, as described above, any of the superabrasive cutting segments may be bonded (e.g., brazed) to the mounting hub, to adjacent superabrasive cutting segments, to the substrate, or combinations of the foregoing. As described above, in addition to or in lieu of bonding the superabrasive cutting segments (e.g., to the mounting hub, to the substrate, or to each other), the mounting hub may secure the superabrasive cutting segments to the substrate. It should be appreciated that, in addition to braze, the mounting feature(s) of the mounting hub may restrain movement of the superabrasive cutting segment in one or more directions in a plane that is substantially coplanar with or substantially parallel to the upper surfaces of the hub and/or superabrasive cutting segment(s). In some embodiments, the mounting feature(s) of the mounting hub may restrain or limit axial movement of the superabrasive cutting segments (e.g., to prevent or limit the superabrasive cutting segments from moving in a manner that would move the upper surface of the mounting hub relative to the upper surface(s) of the superabrasive cutting segment(s)). As such, for example, the mounting feature(s) may provide or facilitate a stronger connection between the superabrasive cutting segment(s) and the substrate (e.g., compared with a connection without the mounting feature(s)), such that the superabrasive cutting segments remain secured to the substrate during operation. 
     The superabrasive compacts disclosed herein may be used in a number of different types of drilling equipment.  FIGS.  16 A- 16 B  illustrate a rotary drill bit  200  according to an embodiment. Specifically,  FIG.  16 A  is an isometric view and  FIG.  16 B  is a top elevation view of the rotary drill bit  200  that includes at least one superabrasive compact configured according to one or more embodiments disclosed herein. The rotary drill bit  200  comprises a bit body  202  that includes radially and longitudinally extending blades  204  having leading faces  206 . Circumferentially adjacent blades  204  define so-called junk slots  208  therebetween. The bit body  202  defines a leading end structure for drilling into a subterranean formation by rotation about a longitudinal axis  20  and application of weight-on-bit. The rotary drill bit  200  includes a plurality of nozzle cavities  210  for communicating drilling fluid from the interior of the rotary drill bit  200  to the superabrasive compact  100   r . Generally, the rotary drill bit  200  may be mounted to a drill string with any number of suitable connections. In the illustrated embodiment, the rotary drill bit  200  has a threaded pin connection  212  for connecting the bit body  202  to a drilling string. 
     At least one superabrasive compact  100   r  or a plurality of superabrasive compact  100   r , which may be configured according to any embodiment disclosed herein, may be affixed to or integrated with the bit body  202 . Moreover, each of a plurality of superabrasive compacts  100   r  is secured to or integrated with corresponding ones of the blades  204  of the bit body  202 . The two or more or all of the superabrasive compact  100   r  may be the same as or similar to one another. Alternatively, the rotary drill bit  200  may include any number of suitable superabrasive compacts at least one or some of which may be different from other superabrasive compacts. 
       FIGS.  16 A- 16 B  merely depict one embodiment of a rotary drill bit that employs at least one superabrasive compact fabricated and structured in accordance with the disclosed embodiments, without limitation. The rotary drill bit  200  is used to represent any number of earth-boring tools or drilling tools, including, for example, core bits, roller-cone bits, fixed-cutter bits, eccentric bits, bi-center bits, reamers, reamer wings, or any other downhole tool including superabrasive compacts, without limitation. 
       FIG.  17    is an enlarged isometric view of a portion of the rotary drill bit  200  (as indicated in  FIG.  16 A ). As shown in  FIG.  17    and described above, the superabrasive compact  100   r  may be mounted to the blade  204 . In some embodiments, the superabrasive compact  100   r  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n ,  100   p ,  100   q ,  100   s ,  100   t ,  100   u  and their corresponding materials, features, elements, and components. 
     The superabrasive compact  100   r  may include a mounting hub  110   r , superabrasive cutting segment  120   r , substrate  130   r , and supporting element  140  that may be similar to or the same as the mounting hub  110   g , superabrasive cutting segment  120   g , substrate  130   g , and supporting element  140   g  respectively, of the superabrasive compact  100   g  ( FIG.  8 A ). In an embodiment, the blade  204  may include a recess that may accommodate at least a portion of the substrate  130   r . For example, the superabrasive compact  100   r  (e.g., the substrate  130   r ) may be brazed to the blade  204  within the recess. 
     In at least one embodiment, at least a portion of the superabrasive compact  100   r  may be exposed in a manner that a cutting edge of the superabrasive compact  100   r  may engage and fail material during operation of the rotary drill bit. For example, at least a portion of the superabrasive compact  120   r  (e.g., a portion of the peripheral surface and upper surface of the superabrasive compact  120   r ) may be exposed in a manner that facilitates engagement of such portion(s) with target material and failing of such material during operation of the rotary drill bit. 
     As described above, in some embodiments, at least a portion of one, some, or each of the superabrasive compacts may be integrated with the rotary drill bit.  FIG.  18    illustrates a portion of a rotary drill bit according to an embodiment. In particular,  FIG.  18    illustrates a blade  204   t  and a superabrasive compact  100   t  partially integrated with the blade  204   t . In some embodiments, the superabrasive compact  100   t  and its materials, features, elements, or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n ,  100   p ,  100   q ,  100   r ,  100   s ,  100   t ,  100   u  and their corresponding materials, features, elements, and components. 
     For example, the superabrasive compact  100   t  may include a mounting hub  110   t , superabrasive cutting segment  120   t , and substrate  130   t , which may be similar to the mounting hub  110   r , superabrasive cutting segment  120   r , substrate  130   r  of the superabrasive compact  100   r  ( FIG.  17   ). As shown in  FIG.  18   , the substrate  130   t  may be integrated with the blade  204   t . Generally, the rotary drill bit and the blade  204   t  thereof may comprise any suitable material that may vary from one embodiment to the next. For example, at least a portion of the blade  204   t  may include tungsten carbide, such as infiltrated tungsten carbide (e.g., copper-infiltrated or tin-infiltrated tungsten carbide particles). Alternatively or additionally, the blade  204   t  may include steel and/or any other suitable material. For example, the substrate  130   t  may comprise cobalt cemented tungsten carbide, steel, cemented carbide, or any other suitable material. 
     In an embodiment, the mounting hub  110   t  may secure or aid in securing (e.g., in addition to brazing) the superabrasive cutting segment  120   t  to the substrate  130   t  and  204   t  in a manner described above. In particular, for example, the mounting hub  110   t  may be bonded (e.g., brazed) to the substrate  130   t  and/or to the blade  204   t , thereby at least partially restraining or securing the superabrasive cutting segment  120   t  to the substrate  130   t  and to the blade  204   t  (as described above). Furthermore, in some embodiments, the superabrasive cutting segment  120   t  may be brazed to the mounting hub  110   t  and/or to the substrate  130   t , to provide a secure connection between the superabrasive cutting segment  120   t  and the blade  204   t . In an embodiment, similar to superabrasive compact  100   b  ( FIG.  3   ), a portion of the peripheral surface of the substrate  130   t  may have a complementary shape to at least a portion of the surface that defines the mounting feature of the mounting hub  110   t.    
     For example, a milling drum or mining system may rotate a plurality of picks mounted or otherwise secured to the milling drum and projecting from a surface thereof. The milling drum may have a particular density and configuration of the pick placement and a variety of different pick configurations and pick spacing may be used. In an embodiment, a milling drum may be suitable for use in machining, grinding, or removing imperfections from a road material. For example, if the milling drum is configured to smooth or flatten the road material, it may be desirable to use a pick configuration that exhibits a high density and a high uniformity of pick placement and a type of the pick that does not deeply penetrate the road material. 
       FIG.  19    illustrates a pick  300  according to an embodiment. In particular, in an embodiment, the pick  300  includes a superabrasive compact  100   w  mounted or attached to a pick body  301 . The superabrasive compact  100   w  and its materials, features, elements, and/or components may be similar to or the same as the any of the superabrasive compacts  100 ,  100   a ,  100   b ,  100   c ,  100   d ,  100   e ,  100   f ,  100   g ,  100   g ′,  100   h ,  100   k ,  100   m ,  100   m ′,  100   m ″,  100   n ,  100   p ,  100   q ,  100   s ,  100   t ,  100   u  and their corresponding materials, features, elements, and components. 
     In some embodiments, the superabrasive compact  100   w  includes a substantially planar working surface. For instance, the working surface may have an approximately semicircular shape or may have the shape of a truncated or divided circle. It should be appreciated that the superabrasive compact  100   w  and the working surface may have any number of other configurations that may vary from one embodiment to the next. 
     It should be appreciated that the phrase “cutting element” is used for convenience only and should not be interpreted as limiting unless the context otherwise requires. Furthermore, the superabrasive compacts or cutting elements disclosed herein may also be utilized in applications other than cutting technology. For example, the disclosed superabrasive compact embodiments may be used in wire dies, bearings, artificial joints, inserts, cutting elements, and heat sinks. Thus, any of the superabrasive compacts disclosed herein may be employed in an article of manufacture including at least one superabrasive element or compact. 
     Thus, the embodiments of superabrasive compacts disclosed herein may be used in any apparatus or structure in which at least one conventional superabrasive compact is typically used. In one embodiment, a rotor and a stator, assembled to form a thrust-bearing apparatus, may each include one or more superabrasive compacts configured according to any of the embodiments disclosed herein and may be operably assembled to a downhole drilling assembly. U.S. Pat. Nos. 4,410,054; 4,560,014; 5,364,192; 5,368,398; and 5,480,233, the disclosure of each of which is incorporated herein, in its entirety, by this reference, disclose subterranean drilling systems within which bearing apparatuses utilizing the superabrasive compacts disclosed herein may be incorporated. The embodiments of superabrasive compacts disclosed herein may also form all or part of heat sinks, wire dies, bearing elements, cutting elements, construction picks, construction tools, road picks, road milling tools and systems, material removal systems, surface mining tools, subterranean mining tools, tunnel boring removal implements, cutting inserts (e.g., on a roller-cone-type drill bit), machining inserts, material removal articles, or any other article of manufacture as known in the art. U.S. patent application Ser. Nos. 14/273,360; 14/275,574; 14/266,437; and 62/232,732, the disclosure of each of which is incorporated herein, in its entirety, by this reference, disclose material removal components and systems within which the superabrasive compacts disclosed herein may be incorporated. Other examples of articles of manufacture that may use any of the superabrasive compacts disclosed herein are disclosed in U.S. Pat. Nos. 4,811,801; 4,268,276; 4,468,138; 4,738,322; 4,913,247; 5,016,718; 5,092,687; 5,120,327; 5,135,061; 5,154,245; 5,460,233; 5,544,713; and 6,793,681, the disclosure of each of which is incorporated herein, in its entirety, by this reference. 
     While various aspects and embodiments have been disclosed herein, other aspects and embodiments are contemplated. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting. Additionally, the words “including,” “having,” and variants thereof (e.g., “includes” and “has”) as used herein, including the claims, shall be open ended and have the same meaning as the word “comprising” and variants thereof (e.g., “comprise” and “comprises”).