Chemical Composition Controlling Technology for Large Diameter Ti6A14V ELI Ingot

摘要：

According to the feature of VAR melting,enlarging diameter of titanium ingot will led to increasing the heterogeneity and segregation probability of alloy element. This paper discussed the effect of melting rate and melting current on composition homogeneity for big size Ti6A14V ELI ingot. Based on the experiences of smaller diameter ingot, VAR melting characteristics,solidification and segregation theories,and combining with industry practice, the optimized melting process was obtained and the very homogeneous Ti6Al4V ELI ingot which size was up to 920mm was also fabricated. The results indicated that the reasonable melting rate and current were two key factors to affecting the distribution alloy element in big sized ingot. The content difference of element of vanadium was only 0. 2％ from the bottom to up.

关键词： VAR chemical composition heterogeneity segregation Ti-6Al- 4V EL I ingot

作者: Jie XU Xiaomiao CHENG Wensheng WANG Xiaoyun SHI Wenzhong LUO Yi FENG Baoquan FU Jianchao DU

作者单位: 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: 376-378

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）