Patent ID: 8770324

Claim:
A partially formed earth-boring rotary drill bit, comprising: a first less than fully sintered particle-matrix component configured to form at least a portion of a bit body of an earth-boring rotary drill bit, the first less than fully sintered particle-matrix component having at least one recess therein; wherein the first less than fully sintered particle-matrix component comprises a first amount of organic material; and at least a second less than fully sintered particle-matrix component disposed at least partially within the at least one recess in the first less than fully sintered particle-matrix component and at least partially surrounded by the first less than fully sintered particle-matrix component; wherein the at least a second less than fully sintered particle-matrix component comprises a second amount of organic material, the second amount of organic material constituting a smaller volume percentage of the at least a second less than fully sintered particle-matrix component relative to a volume percentage of the first less than fully sintered particle-matrix component constituted by the first amount of organic material; wherein each of the first and at least a second less than fully sintered particle-matrix components comprises a green structure including compacted hard particles and particles comprising a metal alloy matrix material, and the at least a second less than fully sintered particle-matrix component is configured to shrink at a slower rate than the first less than fully sintered particle-matrix component due to removal of the organic material from within the first less than fully sintered particle-matrix component and from within the at least a second less than fully sintered particle-matrix component in a sintering process to be used to sinterbond the at least a second less than fully sintered particle-matrix component to the first less than fully sintered particle-matrix component.