Abstract
Porous titanium nickelide exhibiting the shape “memory” effect has been produced from pressed titanium and nickel (carbonyl and electrolytic) powder mixtures of equiatomic composition by high-temperature vacuum sintering resulting in interdiffusion of its components without the formation of a liquid phase. Use of a carbonyl rather than an electrolytic powder in the starting mixture enables sintered TiNi of better physicomechanical properties to be obtained. Sintered TiNi can find practical application not only as a semifinished product in the manufacture of nonporous parts by hot working but also for the production of parts whose thermomechanical recovery characteristics are their key service properties.
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