Fe-Mn-Si合金水泥约束下的应力诱发马氏体逆相变  

Constraint stress-induced reverse martensitic transformation of Fe-Mn-Si alloy embedded in cement

作　　者：刘林林[1] 林成新[1] 孙德平[1] 周超玉[1] 

机构地区：[1]大连海事大学交通与物流工程学院,辽宁大连116026

出　　处：《材料热处理学报》2010年第6期54-57,共4页Transactions of Materials and Heat Treatment

基　　金：辽宁省自然科学基金项目(20072143)

摘　　要：采用X射线衍射分析、金相观察等对Fe-17Mn-5Si-10Cr-5Ni形状记忆合金在水泥基体约束状态下的应力诱发ε马氏体逆相变特征进行研究。结果表明,与非约束状态相比,试验合金在水泥基体约束下的逆相变的终止温度Af升高,而且预应变越大,Af越高。水泥基体约束限制Fe-Mn-Si合金变形协调是造成其逆相变困难的主要原因。The behavior of constraint stress-induced ε reverse martensitic transformation of Fe-17Mn-5Si-10Cr-5Ni shape memory alloy bar embedded in cement matrix was studied by X-ray diffraction（XRD） and metallographical observation.The results show that the finished temperature（Af） of the constrained reverse transformation of Fe-17Mn-5Si-10Cr-5Ni shape memory alloy in cement matrix is elevated,compared with that of the unconstrained alloy.With increasing prestrain,the Af increases.It is argued that the constrained deformation is responsible for the behavior of the reverse martensite transformation in Fe-Mn-Si alloy embedded in cement.

关 键 词：FE-MN-SI形状记忆合金 水泥复合材料 马氏体逆相变 约束 

分 类 号：TG139.6[一般工业技术—材料科学与工程] TG113[金属学及工艺—合金]