It is well known that the achievement of high transformation strains in shape memory alloys (SMAs) has been curtailed by plastic deformation mediated via dislocation slip. In particular, the utilization of SMAs at high temperatures is also hindered by plastic slip. In this paper, an overview of the most important SMAs is provided by constructing transformation strain, transformation temperature, and slip resistance plots to put existing works in perspective. To this plots, we added results on NiTiHf alloys which impart both high temperature capability and high slip resistance at unprecedented levels. The remarkable finding is that NiTiHf alloys can undergo transformation strains near 20% and transformation temperatures exceeding 400 °C.

众所周知，通过位错滑移介导的塑性变形限制了形状记忆合金（SMAs）中高转变应变的实现。尤其是，塑性滑移也阻碍了在高温下使用SMA。在本文中，通过构建转变应变，转变温度和防滑曲线来概述现有工作，从而提供了最重要的SMA的概述。在此图上，我们添加了NiTiHf合金的结果，该结果以前所未有的水平赋予了高温性能和高防滑性。令人瞩目的发现是，NiTiHf合金可承受接近20％的相变应变，且相变温度超过400°C。