摘要
本文用高温金相观察,辅以电阻测量等方法对Fe-28Mn-4Si合金中γε相变进行了研究。γε相变以切变方式进行并产生浮凸,相变可逆,且形核部位具有继承性;在室温至573K间热循环时,随着热循环次数增加,相变产生的浮凸数量减少,ε马氏体片长大增宽,M点基不变,A_1、A_1略有升高。
Studies the γε transformation in Fe-28Mn-4Si alloy by means of high-temperature metallography and electric resistance measurement. The results demonstrate that the γε transformation is reversible and ε martensite plate formation exhibites reproducibility. After several thermal cycles between room temperature and 573K, the amount of the relief of ε martensite reduces, A_s and A_f raise slightly and M_s keeps almost constant.
出处
《大连铁道学院学报》
1993年第1期54-57,共4页
Journal of Dalian Railway Institute
基金
国家自然科学基金:5870006
关键词
形状记忆合金
高温金相
shape memory alloys
high-temperature metallography
phase transformations/Fe-Mn-Si alloy
γε transformation
thermal cycling
