摘要
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。
The mechanical properties,microstructure and stacking fault energy of Fe-18Mn-1. 5Al-0. 6C TWIP steel were researched by deforming at different temperatures and using X-ray to measure the phase composition before and after deformation. The results showed that samples were single austenite structure before and after deformation,and deformation twins generated without phase change. The higher deformation temperature,the lower tensile strength and the higher elongation,with the sooner dynamic strain aging deformation occurred. Thermodynamics and XRD peak displacement method showed that the higher deformation temperature, the higher stacking fault energy.
出处
《上海金属》
CAS
北大核心
2016年第2期7-11,17,共6页
Shanghai Metals
关键词
TWIP钢
力学性能
层错能
变形温度
TWIP Steel
Mechanical Properties
Stacking Fault Energy
Deformation Temperature
