Hi-B钢二次再结晶退火初期不同取向晶粒的三维形貌表征-金属学报.PDF

第53 卷 第5 期 Vol.53 No.5 2017 年5 月 ACTA METALLURGICA SINICA May 2017 Hi-B 钢二次再结晶退火初期不同取向晶粒的 三维形貌表征 徐 洋 鲍思前 赵 刚 黄祥斌 黄儒胜 刘兵兵 宋娜娜 (武汉科技大学省部共建耐火材料与冶金国家重点实验室武汉 430081) 摘要 利用定量逐层研磨和计算机辅助重建及可视化技术，并结合电子背散射衍射(EBSD)方法，研究了Hi-B 钢二次再结晶退火初期不同取向晶粒的三维形貌。结果表明，Goss 取向晶粒主要呈“塔状”，黄铜取向晶粒则 类似“上大下小”倒锥状，{411}148取向晶粒也表现为“塔状”和倒锥状。而{111}112取向晶粒形貌各异， 没有一致性。与其它取向晶粒相比，Goss 取向晶粒在三维尺度上没有尺寸优势，Goss 取向晶粒异常长大前，其 长大主要受曲率控制。 关键词 Hi-B 钢，Goss 取向晶粒，二次再结晶，三维形貌，EBSD 中图分类号 TG 142.77 文章编号 0412-1961(2017)05-0539-10 Three-Dimensional Morphologies of Different Oriented Grains in Hi-B Steel Formed During Early Stage of Secondary Recrystallization Annealing XU Yang, BAO Siqian, ZHAO Gang, HUANG Xiangbin, HUANG Rusheng, LIU Bingbing, SONG Nana The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China Correspondent: BAO Siqian, associate professor, Tel: E-mail: baosiqian@163.com Supported by National Natural Science Foundation of China (No Manuscript received 2016-11-07, in revised form 2016-12-28 ABSTRACT Microstructure and texture evolution of Hi- B steel have been extensively studied in the past decades, and the microstructures are ordinarily characterized only using a single two- dimensional plane of polished or thin foil specimen. Much information on the morphologies is lost owing to the fact that a large part of microstructure is embedded benea