The Dynamic and Static recrystallization of Low-carbon Microalloyed Pipeline Steels

摘要：

The dynamic recrystallization behavior of two low-carbon microalloyed pipeline steels was studied by means of single pass compression under Gleeble-3500 hot simulator. At same time, the static recrystallization and strain induced carbonitride precipitation were studied by means of two passes interrupted compression. The results show that the alloy additions have an effect on the dynamic recrystallization behavior, the dynamic recrystallization activation energy (Qdef) is 373 kJ/mol Nb-Ti Steel and 407 kJ/mol for Mo-Nb Steel, respectively. Furthermore, The Mo-Nb additions in steel can restrain static recrystallization because of stain-induced carbonitrites precipitation. The start time of stain-induced carbonitrites precipitation is delayed in Nb-Ti steel and/or in high reheating temperature.

关键词： Pipeline steels dynamic recrystallization static recrystallization PTT diagrams

作者: Guiying QIAO Furen XIAO Bo LIAO Chunling ZHANG Yiyin SHAN Ke YANG

作者单位: Key Laboratory of Metastable Materials Science & Technology, College of Materials Science & Engineer Key Laboratory of Metastable Materials Science & Technology, College of Materials Science & Engineer Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, P.R.China

会议类型: 国际会议

会议名称: The Fifth International Conference on Physical and Numerical Simulation of Materials Processing(第五届材料与热加工物理模拟及数值模拟国际会议)

会议地点: 郑州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）