Fe-15Mn-5Si-9Cr-5Ni-0．5Ti形状记忆合金组织和性能的研究  

MICROSTRUCTURE AND PROPERTY OF Fe-15Mn-5Si-9Cr-5Ni-0.5Ti SHAPE MEMORY ALLOYS

作　　者：张熹[1] 何国求[1] 陈淑娟[1] 胡正飞[1] 向学渊[1] 

机构地区：[1]同济大学材料学院金属研究所,上海市金属功能材料开发应用重点实验室,上海200092

出　　处：《上海金属》2009年第3期27-30,共4页Shanghai Metals

基　　金：高等学校博士学科点专项基金资助项目(20050247002)

摘　　要：对Fe-15Mn-5Si-9Cr-5Ni-0.5Ti形状记忆合金的组织和性能进行了研究。合金经由小变形量压缩(3%)之后在873K下退火处理15min,反复处理5个循环。用光学显微镜(OM)和透射电子显微镜(TEM)对其显微组织进行了研究。在5次训练过后,合金可回复应变由1.26%上升至1.8%。在训练过程中逐渐析出TiC颗粒,直径大约100～150nm,对记忆效应有良好的作用。Shape memory effect and mierostructure of Fe-15Mn-5Si-9Cr-5Ni-0.5Ti shape memory alloys were investigated. Alloys were deformed by 3 % compression and annealed at 873K for 15min, repeated 5 times. The mierostrueture of the alloys was observed by optical microscopy （OM） and transmission electron microscopy （TEM）. The recovery strain was attained to 1.8% from 1.26% after 5 training cycles. TiC particles about 100 - 150nm in diameter precipitated during training process. The addition of Ti improved shape memory effect effectively.

关 键 词：铁基形状记忆合金 形状记忆效应 热机械训练 显微组织 

分 类 号：TG139.6[一般工业技术—材料科学与工程] TG161.8[金属学及工艺—合金]