Mechanism of microstructural banding in hot rolled microalloyed steels

被引：5

作者：

Cai, S ^{[1
]}

Boyd, JD ^{[1
]}

机构：

[1] Queens Univ, Dept Mech & Mat Engn, Kingston, ON K7L 3N6, Canada

来源：

MICROALLOYING FOR NEW STEEL PROCESSES AND APPLICATIONS | 2005年 / 500-501卷

关键词：

microstructural banding; thermornechanical processing; strain induced grain boundary migration; abnormal grain growth;

D O I：

10.4028/www.scientific.net/MSF.500-501.171

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pilot-scale plate rolling experiments and laboratory thermomechanical processing experiments were carried out to understand the mechanism of microstructural banding in low-carbon microalloyed. steels. The microstructural banding originates with large elongated austenite grains, which are present at the roughing stage of rolling. The large austenite grains develop when conditions favour abnormal grain growth during reheat and/or strain induced grain boundary migration (SIBM) in the first few rolling passes. Microstructural banding is eliminated by designing TMP schedules to avoid abnormal grain growth and SIBM.

引用

页码：171 / 178

页数：8