Influence of heat treatments on phase composite and mechanical properties of Ni₄₇Ti₄₄Nb₉ alloy

来源期刊：中国有色金属学报(英文版)2003年第4期

论文作者：贾堤 刘文西 董治中 韩明 王得法

文章页码：917 - 921

Key words：Ni-Ti-Nb alloy; heat treatment; precipitation; (Ni, Nb)₃Ti

Abstract: The influence of heat treatments on the phase composite and mechanical properties of Ni₄₇Ti₄₄Nb₉ alloy were investigated by using XRD, SEM, TEM and EDX. The results show that a diffusional transformation takes place when the alloy is heated over 850℃ for a long time, and a new precipitation (Ni,Nb)₃Ti with an hcp structure can be found. The formation of the precipitation leads to an increment of microhardness and reduction in elongation.