外加电场对FeMnSiCr形状记忆合金显微组织的影响

The Influence of Additional Electro-field on Microstructure in FeMnSiCr Shape Memory Alloy

采用外加电场的方法,对固溶处理的FeMnSiCr合金的显微组织进行了试验研究。结果表明,在外加电场的作用下,FeMnSiCr合金的显微组织结构发生了明显的变化:晶粒细小,组织均匀,析出相增多;同时外加电场作用为应力诱发ε-马氏体形核提供了更多有利位置,使应力诱发ε马氏体的数量明显增加。

The influence of additional electrofield on microstructure in FeMnSiCr alloys solutiontreated is studied. The results show that the microstructure in FeMnSiCr has been changed greatly by additional electrofield. The grain size has refined, the structure has homogenized and the precipitates have increased. Meanwhile, the priority of nucleation have increased after the additional electrofield is added to cause the stressinduced εmartensite.