维普中文期刊产品整合服务

Relation of martensite-retained austenite and its effect on microstructure and mechanical properties of the quenched and partitioned steels

查看全文 作　　者：WANG Cun [1]Yu;CHANG [2]Ying;LI Xiao [2]Dong;ZHAO Kun [2,3]Min;DONG [1]Han 高影响力作者 机构地区：[1]East China Branch, Central Iron & Steel Research Institute;[2]State Key Laboratory of Structural Analysis for Industrial Equipment, School of Automotive Engineering, Dalian University of Technology;[3]Institute of Industrial and Equipment Technology, Hefei University of Technology高影响力机构 出　　处：《Science China(Technological Sciences)》索引2016年第59卷第5期,共7页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51571048,11472027&51101036);the Natural Science Foundation of Liaoning Province(Grant No.2014028001);the Fundamental Research Funds for the Central Universities(Grant Nos.DUT15QY09&DUT15ZD103);China MOE Scientific Research Funds for Returned Overseas Scholar 摘　　要：A two-step quenching and partitioning(Q&P) treatment was applied to low-carbon alloy steels. The relation of initial martensite- retained austenite- fresh martensite and its effect on microstructure and mechanical properties were investigated by experiments. The results reveal that the volume fraction of retained austenite can reach the peak value of 17%, and the corresponding volume fractions of initial martensite and fresh martensite are 40% and 43%, respectively, when the tested steel is treated by initial quenching at 330°C, partitioning at 500°C for 60 s and final quenching to room temperature. Moreover, the micromorphologies of austenite and martensite become finer with the increasing of initial martensite fraction. The elongation is the highest when the volume fractions of initial martensite and retained austenite are 70% and 11%, respectively, meanwhile, the yield strength increases and tensile strength decreases gradually with the increase of initial martensite fraction, which proves that the mechanical properties including elongation, yield strength and tensile strength are based on the comprehensive effect of the retained austenite fraction, the finer microstructure and austenite stability. 关 键 词：残余奥氏体 力学性能 马氏体 钢组织 调质钢 分块 体积分数 屈服强度
相关文献

参考文献(19)

引证文献(4)

耦合文献(41)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费