Microstructural Evolution of Ultrafine-Grained Steel During Tandem Rolling Process

摘要：

Titanium microalloyed steel whose grain size is around 3u.m has been developed by CSP process. Samples after different plastic deformation were obtained by suddenly stopping the six-stand finishing train during tandem rolling. Experimental results and analysis show that plastic deformation during tandem rolling plays a major role for grain refinement. With the successive severe strain, microstructure of the same stock during tandem rolling is further refined because of repeated recrystallization at higher temperature and strain accumulation at lower temperature. Technological features of CSP process, such as large reduction per pass, rapid cooling after rolling and high solidification and of thin slab, are important reasons for obtaining ultafine-grained structure. Besides these, chemical composition of titanium microalloyed steel has beneficial effects on grain refinement.

作者: Xiangdong Huo Xinping Mao Yizhong Chai

作者单位: School of Material Science and Engineering,Jiangsu University,Zhenjiang 212013,China Guangzhou Zhujiang Steel Co.Ltd,Guangzhou 510730,China

会议类型: 国际会议

会议名称: 5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)

会议地点: 南京

会议语种:英文

页码: 415-420

在线出版日期: 2011-03-01（万方平台首次上网日期，不代表论文的发表时间）