Mechanical Properties and Microstructures of the TWIP Steels Subjected to Asymmetric Rolling
JIANG Jian-hua1,DING Yi 1,2,CHEN Yun-long1,SHAN Ai-dang1
1. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China 2. Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China
Abstract：The mechanical properties and microstructures of the TWIP steels subjected to asymmetric rolling (ASR) and post-annealing processes were investigated by means of optical microscope, X ray diffractometer and transmission electron microscope. The results indicate that the strength of the TWIP steel is greatly increased while the ductility is decreased obviously after asymmetrically rolled at 500℃. Such results are ascribed to the combined action of dislocations and twins. The heat treatment after rolling reduces the dislocation density and amount of twins, and consequently leads to the decrease of strength and increase of elongation. After annealing at 600℃ and 700℃, the TWIP steel have good property combination of both strength and ductility. Therefore, the ASR plus post-annealing process was a feasible approach to achieve excellent combinative mechanical properties in TWIP steels.
收稿日期: 2010-08-17
出版日期: 2011-11-17
引用本文:
蒋建华，丁毅,，陈云龙，单爱党. 异步轧制TWIP钢的力学性能和微观组织[J]. 钢铁, 2011, 46(11): 77-81.
JIANG Jian-hua1,DING Yi 1,2,CHEN Yun-long1,SHAN Ai-dang1. Mechanical Properties and Microstructures of the TWIP Steels Subjected to Asymmetric Rolling. Iron and Steel, 2011, 46(11): 77-81.
2011, Vol. 46 
