Stress-induced martensite phase transformation of FeMnSiCrNi shape memory alloy subjected to mechanical vibrating polishing  

机械振动抛光FeMnSiCrNi形状记忆合金的应力诱发马氏体相变

作　　者：Shu-yong JIANG Yu WANG Xiao-dong XING Yan-qiu ZHANG 江树勇;王宇;邢晓冬;张艳秋(哈尔滨工程大学机电工程学院,哈尔滨150001;哈尔滨工程大学材料科学与化学工程学院,哈尔滨150001)

机构地区：[1]College of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China [2]College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Transactions of Nonferrous Metals Society of China》2020年第6期1582-1593,共12页中国有色金属学报（英文版）

基　　金：Projects (51475101, 51871070) supported by the National Natural Science Foundation of China。

摘　　要：Fe66Mn15Si5Cr9Ni5(wt.%)shape memory alloy(SMA)withγaustenite andεmartensite was subjected to mechanical vibrating polishing and consequently its surface suffered from plastic deformation in the case of compressive stress.Almost completeεmartensite transformation is found to occur in FeMnSiCrNi sample subjected to mechanical vibrating polishing,where stress-induced martensite transformation plays a predominant role.Stressinduced martensite transformation of FeMnSiCrNi SMA is closely related to the orientation of external stress.The complicated compressive stress which results from the mechanical vibrating polishing contributes toεmartensite transformation fromγaustenite of FeMnSiCrNi SMA.Mechanical vibrating polishing has a certain influence on the surface texture ofεmartensite of FeMnSiCrNi SMA,where■<0001>texture appears in the polished FeMnSiCrNi SMA.由γ奥氏体和ε马氏体构成的Fe66Mn15Si5Cr9Ni5(质量分数,%)形状记忆合金经机械振动抛光后在压应力作用下发生塑性变形。经机械振动抛光的FeMnSiCrNi形状记忆合金几乎发生完全的ε马氏体相变,其中应力诱发马氏体相变起主导作用。应力诱发马氏体相变与外加应力的取向密切相关。机械振动抛光引起的复杂压应力有助于FeMnSiCrNi形状记忆合金γ奥氏体发生ε马氏体相变。机械振动抛光对FeMnSiCrNi形状记忆合金ε马氏体表面织构具有一定影响,在经机械振动抛光的FeMnSiCrNi形状记忆合金表面形成■<0001>织构。

关 键 词：shape memory alloy mechanical polishing martensitic transformation TEXTURE microstructure 

分 类 号：TG139.6[一般工业技术—材料科学与工程]