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由于TiNi基合金具有优秀的形状记忆效应(SME)和伪弹性效应(PE)，在诸多的形状记忆合金(SMAs)中是最有声望的，添加第三合金元素对TiNi合金的相变行为有着极大的影响。中国台湾大学研究了四元Ti50-xNi49.5Zrx/2Hfx/2(x=0~20%)合金(以下简称A类合金)并与Ti50-xNi49.5Zrx三元合金(
TiNi-based alloys are the most prevalent in many shape memory alloys (SMAs) due to their excellent shape-memory effect (SME) and pseudo-elastic effect (PE). The addition of the third alloying element to the TiNi alloy Great influence. China University of Taiwan studied the quaternary Ti50-xNi49.5Zrx / 2Hfx / 2 (x = 0 ~ 20%) alloy (hereinafter referred to as A type alloy) and Ti50-xNi49.5Zrx ternary alloy