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{1120}<0001>织构.
Fe66Mn15Si5Cr9Ni5 (wt.%) shape memory alloy (SMA) with γ austenite and ε martensite was subjected to mechanical vibrating polishing and consequently its surface suffered from plastic deformation in the case of compressive stress. Almost complete ε martensite transformation is found to occur in FeMnSiCrNi sample subjected to mechanical vibrating polishing, where stress-induced martensite transformation plays a predominant role. Stress- induced 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 to ε martensite transformation from γ austenite of FeMnSiCrNi SMA. Mechanical vibrating polishing has a certain influence on the surface texture of ε martensite of FeMnSiCrNi SMA, where {1120}<0001>texture appears in the polished FeMnSiCrNi SMA.