Fe-15Mn-5Si-9Cr-5Ni形状记忆合金回复性能及微观结构演变

材料导报, 2009, 23(2): 51-53.

Fe-15Mn-5Si-9Cr-5Ni形状记忆合金回复性能及微观结构演变

向学渊 ^1, , 何国求 ^2, , 莫德锋 ^3, , 陈淑娟 ^4, , 张熹 ^5,

1.同济大学材料学院金属基材料研究所,上海市金属功能材料开发应用重点实验室,上海,200092

2.同济大学材料学院金属基材料研究所,上海市金属功能材料开发应用重点实验室,上海,200092

3.同济大学材料学院金属基材料研究所,上海市金属功能材料开发应用重点实验室,上海,200092

4.同济大学材料学院金属基材料研究所,上海市金属功能材料开发应用重点实验室,上海,200092

5.同济大学材料学院金属基材料研究所,上海市金属功能材料开发应用重点实验室,上海,200092

基金项目: 紧固件用铁基记忆合金的回复量及相变温度的产业化技术攻关项目(DY06001) 教育部新世纪优秀人才支持计划(NCET-05-0388) 上海市金属功能材料开发应用重点实验室开放基金国家重点基础研究发展规划(973计划)(2007CB714700)

关键词：形状记忆效应 , 训练 , 形变回复率 , 层错

Recovery Characteristic and Microstructural Evolution of Fe-15Mn-5Si-9Cr-5Ni Shape Memory Alloy

制备了含不同Al量的2种Fe-15Mn-5Si-9Cr-5Ni形状记忆合金,测定了多次训练之后的记忆效应,并用金相显微镜和透射电镜对材料的微观组织结构进行了观察,结果表明,训练之后的合金记忆效应明显提高,尤其是第二次训练会产生显著效果.含过量的铝对形状记忆效应不利.训练后的合金内存在宽大的层错,层错增多,有利于形状记忆效应的提高.

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