Kinetics Analysis of Pre-Eutectoid Transformation of Austenite in Carbon-Manganese Clean Steel with Rare Earths

摘要：

By means of rapid cool dilatometry, the influence of rare earths on kinetics of pre-eutectoid transformation of austenite of carbon-manganese clean steel was studied. While the content of rare earths were proper, the nucleation of pre-eutectoid ferrite on the grain boundary of austenite was accelerated and the incubation period of pre-eutectoid transformation was shortened. But while rare earths were excessive, opposite actions appeared. Rare earths decreased transformation velocity constant in the process of transformation from austenite to ferrite, which meant that the growth of per-eutectoid ferrite became slow. The reason above varieties was related to effect of rare earth on grain boundary constitution of austenite and diffusion of carbon element.

关键词： clean steel per-eutectoid transformation kinetics rare earths

作者: Guo Feng(郭锋) Lin Qin(林勤)

作者单位: College of Materials Science and Engineering, Inner Mongolia University of Technology, Huhhot 010051 Physical Chemistry Department, University of Science and Technology Beijing, Beijing 100083, China

会议类型: 国际会议

会议名称: 第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)

会议地点: 包头

会议语种:英文

页码: 465-467

在线出版日期: 2007-08-07（万方平台首次上网日期，不代表论文的发表时间）