Ezperimental Analysis of Ostwald Ripening and Grain Growth in Ti-bearing Precipitation Hardened Steel

摘要：

Precipitation coarsening, grain growth and the relationship between precipitation size and ferrite grain size during heating at 970K were investigated in low carbon Ti-bearing precipitation hardened hot rolled steel. Precipitation coarsening obeyed to a growth law of r4∝t which implies that the controlling step of the coarsening process is grain boundary diffusion of Ti. Critical grain size calculated from Zeners equation is smaller than actual grain size in hot rolled steel and grain growth is controlled by the precipitation coarsening after holding time of 260ks.

关键词： precipitation coarsening grain growth grain boundary diffusion Ti-bearing steel

作者: Kazuhiro Seto Tamako Ariga Yoshimasa Funakawa Osamu Furukimi

作者单位: Steel Research Laboratory,JFE Steel Corporation,Chiba,Japan Steel Research Laboratory,JFE Steel Corporation,Kawasaki,Japan Faculty of Engineering Department of Materials Science and Engineering,Kyusyu University,Fukuoka,Jap

会议类型: 国际会议

会议名称: The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)

会议地点: 北京

会议语种:英文

页码: 163-166

在线出版日期: 2009-10-27（万方平台首次上网日期，不代表论文的发表时间）