预变量与时效温度对Fe—Mn—Si合金记忆效应的影响  

Influence of pre-deformation and aging temperature on the shape memory effect of Fe-Mn-Si based alloy

作　　者：王河廷[1] 沈以赴[1] 王再友[2] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京210016 [2]南京工程学院材料工程学院,江苏南京211167

出　　处：《功能材料》2007年第A08期3234-3235,共2页Journal of Functional Materials

基　　金：江苏省自然科学基金资助项目（BK2005112）;江苏省高校自然科学研究资助项目（05KJD430082）

摘　　要：研究了预变形量和时效温度对Fe-28Mn-5．7Si-5Cr-0．82Ni-0．045Nb合金形状记忆效应的影响。结果表明，合金形状回复率随预变量的增大而减小，在2％左右合金回复率可以达到80％。合金经1023K时效处理时形状记忆效应最好，比固溶态提高了90％，这主要是时效处理有效提高了奥氏体基体的强度，而奥氏体基体的强度的提高可以抑制塑性变形的产生。This paper discussed the effect of pre-deformation and aging temperature on the recovery ratio of Fe-28Mn-5.7Si-5Cr-0.82Nb-0.045Ce shape memory alloy（SMA）. The results indicate that the recovery ratio of Fe-28Mn-5.7Si-5Cr-0.82Ni-0.045Nb SMA decreases with the increasing of pre-deformation, and the recovery ratio can reach 80% when the pre-deformation is 2%. In addition, the recovery ratio of the alloy increase with the aging temperature increase, and the recovery ratio reach the maximum at 1023K, raised 90% than the solution state, the reason for which is the strength of the matrix alloy is raised by the aging treatment.

关 键 词：FE-MN-SI基合金 形状记忆效应 预变形 时效处理 

分 类 号：TG139.6[一般工业技术—材料科学与工程]