Hot deformation behavior of medium carbon V-N microalloyed steel
Processing maps for a medium carbon V-N microalloyed steel(designated as VN steel) and a medium carbon V-N bared steel(designated as Non-VN steel) were developed to study the hot deformation behavior and the influence of vanadium and nitrogen,in the temperature range of 750-1 100 ℃ and strain rate range of 0.005-30 s-1.Experimental results show that the processing map for the VN steel exhibits two dynamic recrystallization and three instability domains,while that for the Non-VN steel has one dynamic recrystallization and three instability domains.The instability domains of VN steel are larger than those of the Non-VN steel,and the VN steel is easier to be unstable when being hot deformed at high temperature and high stain rate.The addition and precipitation of vanadium and nitrogen can hinder the dynamic recrystallization.Compared with the Non-VN steel,the VN steel has higher dynamic recrystallization critical strain and the corresponding stress.
medium carbon V-N microalloyed steel hot deformation processing map dynamic recrystallization
XU Lei WANG Cheng-yang LIU Guo-quan BAI Bing-zhe
Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China;School of M School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100 Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China
国际会议
2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)
长沙
英文
1389-1394
2009-11-22（万方平台首次上网日期，不代表论文的发表时间）