原始组织对FeMnSiCrNi记忆合金热机械循环训练效果的影响  

Effect of Original Microstructure on Effectiveness of Thermo-mechanical Training in FeMnSiCrNi Shape Memory Alloy

作　　者：孙盼盼[1] 叶邦斌[1] 彭华备[1] 文玉华[1] 

机构地区：[1]四川大学制造科学与工程学院,四川成都610065

出　　处：《热加工工艺》2009年第10期25-28,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(50131010);新世纪优秀人才支持计划项目(NCET-06-0793)

摘　　要：研究了FeMnSiCrNi形状记忆合金母相原始微观组织对热机械循环训练效果的影响。结果表明:原始微观组织显著影响热机械循环训练对FeMnSiCrNi形状记忆合金的作用效果。对具有不利于形状记忆效应的原始微观组织的合金,热机械循环训练的作用效果更加显著。原因在于初始形状记忆效应优良的合金,退火以后大部分应力诱发ε马氏体逆转变为奥氏体,而不是分解成堆垛层错。The influence of original microstructure of parent phase on the effectiveness of thermo-mechanical training in FeMnSiCrNi shape memory alloy was studied. The results show that the original microstructure dramatically affects the effectiveness of thermomechanical training in FeMnSi shape memory alloy. The effectiveness of training is very remarkable for the specimens with the initial microstructure which isn＇t beneficial to shape memory effect. The reason is that the decompositions ore martensite plates are less in specimens with a good initial SEM since the most of stress-induced e martensite reverse to austenite after annealing, not decomposing into stacking faults.

关 键 词：形状记忆合金 热机械循环训练 原始微观组织 马氏体相转变 形状记忆效应 

分 类 号：TG139.6[一般工业技术—材料科学与工程]