Powder Titanium Nickelide: Technology and Properties

Abstract—The influence of various schemes of thermomechanical treatment (TMT) on the structure and properties of two sintered nickel-rich binary TiNi powder alloys is shown. TMT is found to decrease the average grain size and to increase the strength characteristics, the alloy density, and the plasticity relative to the initial sintered state. The influence of TMT on the phase composition of the alloy is detected by X-ray diffraction. TMT is shown to promote the formation of the triclinic R-martensite or strain aging with the precipitation of the Ti2Ni3 phase.