Effects of Cyclic Solid Solution on Microstructures of Post-HIP Ti-45Al-8.5Nb-(W,B,Y)Compacts

摘要：

　　In order to gain fine-grained lamellar microstructures,cyclic solid solution treatments at 1628K with air cooling were performed to post-HIP powder metallurgy Ti-45Al-8.5Nb-(W,B,Y)compacts,and effects of cyclic times on lamellar grain size and quantity of residual γ grains were investigated.The results reveal that with increasing of cyclic times,quantity of residual γ grains was gradually reduced with a few growth of lamellar grain size.If cyclic times are larger than 6,quantity of residual γ grains will be lower than 4%and full lamellar grain size reach about 18μm.Therefore,Ti-45Al-8.5Nb-(W,B,Y)alloy with fine near full lamellar microstructures has been gained.

关键词： TiAl based alloy Microstructure Cyclic solid solution Powder metallurgy

作者: Lang Zebao Zhang Yongzhong Zhang Xuhu Wang Liang Yin Zhongwei

作者单位: Department of Special Metals & Processing Technology,Aerospace Research Institute of Materials & Pro Center for Composites,General Research Institute of Nonferrous Metals,Beijing 100088,China Department of Special Metals & Processing Technology,Aerospace Research Institute of Materials & Pro

会议类型: 国际会议

会议名称: 2018世界粉末冶金大会

会议地点: 北京

会议语种:英文

页码: 958-963

在线出版日期: 2018-09-16（万方平台首次上网日期，不代表论文的发表时间）