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淬火分配工艺对60Si2Mn弹簧钢显微组织和力学性能的影响
引用本文:周青松,郝庆国,杨旗,张柯,刘平. 淬火分配工艺对60Si2Mn弹簧钢显微组织和力学性能的影响[J]. 机械工程材料, 2021, 45(1): 14-19,27. DOI: 10.11973/jxgccl202101003
作者姓名:周青松  郝庆国  杨旗  张柯  刘平
作者单位:上海理工大学材料科学与工程学院,上海 200093;上海材料研究所,上海市工程材料应用与评价重点实验室,上海 200437;上海材料研究所,上海市工程材料应用与评价重点实验室,上海 200437;上海材料研究所,上海市工程材料应用与评价重点实验室,上海 200437;上海理工大学材料科学与工程学院,上海 200093;上海理工大学材料科学与工程学院,上海 200093
基金项目:上海材料研究所技术创新项目;上海市自然科学基金资助项目
摘    要:对60Si2Mn弹簧钢进行了不同淬火温度(140,160,180℃)的淬火分配(Q&P)处理,研究Q&P处理后该钢的显微组织和力学性能,并与传统淬火+回火(Q&T)工艺处理后的进行对比.结果表明:经Q&P处理后,60Si2Mn弹簧钢的显微组织均为残余奥氏体和马氏体,残余奥氏体的体积分数均大于12%,而经Q&T处理后的显...

关 键 词:60Si2Mn弹簧钢  淬火分配工艺  残余奥氏体  力学性能

Effect of Quenching and Partitioning Process on Microstructure and Mechanical Properties of 60Si2Mn Spring Steel
ZHOU Qingsong,HAO Qingguo,YANG Qi,ZHANG Ke,LIU Ping. Effect of Quenching and Partitioning Process on Microstructure and Mechanical Properties of 60Si2Mn Spring Steel[J]. Materials For Mechanical Engineering, 2021, 45(1): 14-19,27. DOI: 10.11973/jxgccl202101003
Authors:ZHOU Qingsong  HAO Qingguo  YANG Qi  ZHANG Ke  LIU Ping
Affiliation:(School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Engineering Materials Application and Evaluation,Shanghai Research Institute of Materials,Shanghai 200437,China)
Abstract:60Si2Mn spring steel was treated by quenching and partitioning(Q&-P)at different quenching temperatures(140,160,180℃).The microstructure and mechanical properties of the steel after Q&P treatment were investigated,and compared with those after traditional quenching and tempering(Q&-T)treatment.The results show that the microstructure of 60Si2Mn spring steel after Q&P treatment consisted of retained austenite and martensite,and the volume fraction of retained austenite was more than 12%.The microstructure of the steel after Q&T treatment was tempered troostite/tempered sorbite.The strength and hardness of the steel after Q&P treatment decreased with increasing quenching temperature,and the percentage elongation after fracture,impact energy and product of strength and elongation increased,which were all larger than those after Q&T treatment.The comprehensive performance of the spring steel after Q&P treatment was better than that after Q&T treatment because of the transformation-induced plasticity effect caused by the restained austenite during deformation.
Keywords:60Si2Mn spring steel  quenching and partitioning process  retained austenite  mechanical property
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