Abstract: A powder metallurgy method for producing a non-molybdenum-segregated article is disclosed. The method includes use of a Ni—Mo—Cr powder that has a composition in which Ni is the base element and the Mo and Cr are alloy elements. The composition comprises, by weight, at least 20% of the Mo, and the Mo is dispersed in the Ni—Mo—Cr powder. The Ni—Mo—Cr powder is inserted into a hermetic chamber of a canister, followed by evacuating the hermetic chamber. The canister with the Ni—Mo—Cr powder in the hermetic chamber is then subjected to a hot isostatic pressing process that includes heating the canister and the Ni—Mo—Cr powder and applying isostatic pressure to the canister. The heating and the isostatic pressure causes fusion and consolidation of the Ni—Mo—Cr powder to form a solid article. The Mo remains dispersed such that the solid article is non-molybdenum-segregated. The canister is then removed from the solid article.

Abstract: Composite materials comprising ferroelastic ceramic particulates dispersed in a metal matrix are capable of vibration damping. When the ferroelastic ceramic particulates are subjected to stress, such as the cyclic stress experienced during vibration of the material, internal stresses in the ceramic cause the material to deform via twinning, domain rotation or domain motion thereby dissipating the vibrational energy. The ferroelastic ceramic particulates may also act as reinforcements to improve the mechanical properties of the composites. The composite materials may be used in various structural components in vehicles, aircraft, spacecraft, buildings and tools.