Effect of the Heat-treatment Temperature on the Mechanical Properties and Microstructural Evolution of Cold-rolled Twinning-induced Plasticity Steel  

作　　者：李大赵 WEI Yinghui SONG Jinlu HOU Lifeng 

机构地区：[1]School of Materials Scinece and Engineering, North University of China [2]School of Materials Scinece and Engineering,Taiyuan university of technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2015年第2期386-391,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation o f China(51201154);the Natural Science Foundation of Shanxi Province(2014011015-1)

摘　　要：TWIP steels with 70% cold-rolled reduction were heated at 500, 600, 700, 800, 900, 1000, and 1100 ℃. Then, the properties before and after heating were examined through tensile and hardness experiments. The microstructures were also analyzed by optical microscopy and transmission electron microscopy. The relationship between the properties and microstructure was examined as well. Finally, the evolution process of cold-rolled microstructures during heating was discussed in detail. Moreover, some conclusions can be drawn, and the heating evolution characteristics are described.TWIP steels with 70% cold-rolled reduction were heated at 500, 600, 700, 800, 900, 1000, and 1100 ℃. Then, the properties before and after heating were examined through tensile and hardness experiments. The microstructures were also analyzed by optical microscopy and transmission electron microscopy. The relationship between the properties and microstructure was examined as well. Finally, the evolution process of cold-rolled microstructures during heating was discussed in detail. Moreover, some conclusions can be drawn, and the heating evolution characteristics are described.

关 键 词：TWIP steel cold rolled static recrystallization dislocation walls 

分 类 号：TG161[金属学及工艺—热处理] TG142.1[金属学及工艺—金属学]