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本文研究了奥氏体变形（高于Ｍｄ温度）对Ｆｅ－２８Ｍｎ－６Ｓｉ－５Ｃｒ（％）合金形状记忆效应和亚结构的影响，结合热机械训练结果，揭示了影响合金形状记忆效应的主要因素。实验结果表明，所研究的合金在７００℃下进行９％的拉伸变形后，合金会产生均匀分布在奥氏体中的方向一致的层错和位错等亚结构，从而改善合金的形状记忆效应。奥氏体变形和热机械训练方法提高形状记忆效应的本质是由于分别通过动态回复和静态回复改善奥氏体母相的亚结构，与奥氏体母相强度的变化没有必然的联系。
In this paper, the effect of austenite deformation (higher than Md temperature) on the shape memory effect and substructure of Fe-28Mn-6Si-5Cr (%) alloy was studied. Combined with the results of thermomechanical training, the main factors affecting the shape memory effect of alloy . The experimental results show that the alloy under tensile deformation of 9% at 700 ℃ produces uniform sub-structures such as stacking faults and dislocations uniformly distributed in the austenite, so as to improve the shape memory of the alloy effect. The nature of austenite deformation and thermo-mechanical training to improve the shape memory effect is due to the fact that the sub-structure of the austenite parent phase is improved by dynamic recovery and static recovery respectively, which is not necessarily related to the change of the austenite parent phase strength.