Microstruce evolution and mechanical property performance during quenching and partitioning process

摘要：

　　Q&P (quenching and partitioning) process is a novel heat treatment technology which could product high combination of strength and ductility.Austenization,martensite formation during quenching process,carbon partitioning and bainite formation during partitioning stage appeared in Q&P process.In this paper microstructure evolution and affection on mechanical property were analyzed by different heat treatment parameters during Q&P process on a new component steel designed in lab.Results showed that better elongation obtained at lower austenization temperature due to more ferrite appeared,after full austenization and partitioned at 250 ℃ (one-step Q&P),the tensile strength and elongation were 1655MPa and 16%,respectively,as for samples quenched at 250℃ and partitioned at 400℃ for 2min (two-step Q&P) were 1118MPa and over19%.

关键词： ultrahigh strength steel Q&P microstructure evolution austenization

作者: ZHU Shuai KANG Yong-lin REN Kang-kang KUANG Shuang JIANG Ying-hua

作者单位: School of Materials Science and Engineering,State Key Laboratory for Advanced Metals and Materials,U Shougang Research Institute of Technology,Beijing 100043,China

会议类型: 国际会议

会议名称: Asia Steel International conference 2012(第五届亚洲钢铁大会)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2012-09-23（万方平台首次上网日期，不代表论文的发表时间）