对成分为Fe-18Mn-1.5Al-0.6C的TWIP钢在不同温度下进行了变形拉伸试验,研究了钢板的力学性能、微观组织及层错能,并用X射线测定了变形前后的相组成,结果表明:试样在变形前后均为单一的奥氏体组织,变形时生成孪晶而未发生相变;变形温度越高,抗拉强度越低,延伸率越高,形变时的动态应变时效出现的越早;热力学方法和XRD峰位移法同时表明:变形温度越高,层错能越高.
参考文献
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