Effect of Cooling Rate on Phase Transformation and Microstructure of TC21 Titanium Alloy

摘要：

Effect of cooling rate from β phase region on phase transformation and microstructure of TC21 titanium alloy were investigated. Martensites,α and β phases are formed under different cooling conditions. Water quenching and air cooling result in the formations of α and α martensitic microstructures,characterized by parallel or orthogonal acicular martensitic plates. The phase transformation process is gradually dominated by diffusion mechanism with decrease of cooling rate. At furnace cooling rate, colony microstructure, characterized by parallel a laths separated by β phase,is formed. As the increase of cooling rate, the colony microstructure changes into mixed microstructure,characterized by the combination of colony microstructure and basketweave microstructure.

关键词： TC21 alloy cooling rate phase microstructure

作者: Hui Shao Yongqing Zhao Peng Ge Weidong Zeng Kaixuan Wang

作者单位: State Key Laboratory of Solidification Processing,North-western Polytechnical University,Xian 71007 North-west Institute for Non ferrous Metal Research,Xian 710016,China State Key Laboratory of Solidification Processing,North-western Polytechnical University,Xian 71007 Western Superconducting Technologies Co.,Ltd,Xian 710018,China

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 637-639

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）