FeMnSi合金热马氏体和应力诱发马氏体相变与形状记忆效应的关系  

Study on Relationship Among SME and Thermal and Stress induced Martensite in FeMnSi Alloy

作　　者：夏瑞东[1] 刘冠威[2] 王学敏[2] 

机构地区：[1]首都师范大学物理系 [2]北京科技大学材料物理系

出　　处：《金属热处理》1997年第6期12-15,共4页Heat Treatment of Metals

摘　　要：通过研究预应变量３％的两种ＦｅＭｎＳｉ合金形状恢复量与ε－马氏体量随温度的变化，发现ε－马氏体在晶体中存在能量分布，使之在４５０℃回火不能完全逆转变，同时发现应变合金中储存弹性内应力，使材料在Ａｓ～Ａｆ温度区间的膨胀与收缩系数不同。The change of recovery strain and the volume fraction of ε martensite as a function of temperature for two FeMnSi alloy prestrained by 3% was investigated It suggested that there exist an energy distribution among ε martensite shears which lead part of ε martensite not transformed after heated at 450℃ The internal elastic stress in prestrained FeMnSi shape memory alloy(SMA),which result in the different between constract rate and expansion rate,was showed on partial thermal cycle curve

关 键 词：ε-马氏体 相变 形状记忆合金 铁基 回火 

分 类 号：TG151.2[金属学及工艺—热处理]