Patent ID: 8936751
Filing Date: 2015-01-20
Classification: B22F,C22B,C22C

Abstract:
1. A method for forming a composite system, the method comprising: forming a titanium-based alloy system for containing a hard powder by substituting one or more elements, selected from the group consisting of titanium and aluminum, for at least a portion of one or more heavy elements, selected from the group consisting of nickel, molybdenum, niobium and tungsten, of a known alloy system for forming a composite system containing carbide; forming a composite system precursor powder that comprises a powder of the titanium-based alloy system mixed with a powder of at least one carbide, at least one nitride, or a mixture thereof, 32 wt. % to 55% wt. % of the composite system precursor powder being a powder of at least one carbide, at least one nitride, or a mixture thereof, and 20 wt. % to 54% wt. % of the composite system precursor powder being titanium powder; shaping a volume of the composite system precursor powder to form a green compact; heating the green compact to partially melt the composite system precursor powder; and cooling the partially melted composite system precursor powder to form a body of a composite system comprising powder of at least one carbide, at least one nitride, or a mixture thereof, the titanium and/or aluminum being substituted in an amount sufficient that the composite system containing powder of at least one carbide, at least one nitride, or a mixture thereof (a) has a density not less than 3.63 g/cc and not more than 5.0 g/cc, (b) is 6 wt. % to 17 wt. % nickel, and (c) exhibits branched cracking upon cracking due to impact with a ballistic projectile.