Enhanced Strength and Toughness of Medium Manganese TRIP Steel Treated by Intercritical Annealing

摘要：

　　Intercritical annealing (IA) process was applied to anultra-low carbon medium manganese transformation-induced plasticity (TRIP) steel.The microstructure and mechanical properties were investigated in detail.Intercritical annealing at 640℃ for 8hled to a ferrite-austenitedual-phase microstructure with excellent combination ofhigh tensile strength of 865 MPa,total elongation of 25%,and enhanced impact energy of 181 J at room temperature.Both lath-like and blocky retained austenite was observed and the volume fraction of retained austenite reached up to23%.The optimum combination of strength and toughness could be attributed to the TRIP effect of metastable retained austenite and the cooperative deformation of ferrite.

关键词： medium manganese steel retained austenite strength impact toughness

作者: ZOU Ying XU Yunbo HU Zhiping GU Xingli PENG Fei CHEN Shuqing HAN Dingting

作者单位: State Key Laboratory of Rolling and Automation, Northeastern University,Shenyang 110819, Liaoning, China

会议类型: 国际会议

会议名称: the 1st International Conference on Automobile Steel & The 3rd International Conference on High Manganese Steels (第一届国际汽车用钢大会暨第三届高锰钢国际会议)

会议地点: 成都

会议语种:英文

页码: 279-281

在线出版日期: 2016-11-16（万方平台首次上网日期，不代表论文的发表时间）