The Effect of Micro-calcium on γ Grain Size and Toughness in CGHAZ of C-Mn Steel

摘要：

Through adding enough calcium to C-Mn steel, the second phase particles of CaO can be found in C-Mn steel. The microstructure , the γ grain size and the toughness of CGHAZ in micro-calcium steel and no micro-calcium steel were studied by TEM, SEM and series impact experiment. The research showed that the second phase particles CaO in microcalcium steel have strong pinning force to γ grain boundary of CGHAZ ; the second phase particles can retard γ grain growth in the course of welding in micro-calcium steel, fining γ grain in the CGHAZ and improving the strength and toughness of CGHAZ in micro-calcium steel.

关键词： micro-calcium γ grain boundary γ grain size toughness

作者: JIA Kun-ning GAO Cai-ru DU Lin-xiu WANG Guo-dong

作者单位: The state key laboratory of rolling and automation, Northeastern university ,Shenyang Liaoning 110004,China

会议类型: 国际会议

会议名称: 第四届先进结构钢及轧制新技术国际研讨会

会议地点: 辽宁

会议语种:英文

在线出版日期: 2006-10-21（万方平台首次上网日期，不代表论文的发表时间）