锻造工艺对TA12A钛合金组织性能的影响规律研究  

Study on influence of forging process on microstructure and properties of titanium alloy TA12A

作　　者：杜予晅[1] 郝芳[1] 雷锦文[1] 高玉社[1] 安震[1] 李少强[1] 刘向宏[1] 

机构地区：[1]西部超导材料科技股份有限公司,陕西西安710018

出　　处：《锻压技术》2015年第8期124-127,共4页Forging & Stamping Technology

基　　金：国家国际科技合作专项(2013DFB50180);陕西省科技统筹创新工程计划项目(2013KTLM-01)

摘　　要：研究了常规锻造工艺与"高低高低"锻造工艺对TA12A钛合金大规格棒材组织和性能的影响规律。研究结果表明:采用"高低高低"锻造工艺获得的棒材,其微观显微组织中的初生α相等轴化程度高,含量约为65%,棒材的微观显微组织差异性较小,均匀性良好;而常规锻造工艺获得棒材的微观显微组织均匀性欠佳,且心部微观显微组织存在一定的取向。"高低高低"锻造工艺获得的棒材室温性能与高温性能均优于常规锻造工艺。The influences of traditional forging process and the ＂HLHL＂ （high low high low） forging process on mierostructure and properties of large-sized titanium alloy TA12A bar were studied. The research results show that the bar can be obtained by ＂HLHL＂ forging process with a high coaxial degree of primary α in its microstructure, and its content is about 65%. Furthermore, there are less differences and good uniformity in the microstructure of the bar. However, the microstructure uniformity is poor, and there is a certain alignment in the heart mierostructure in conventional forging process. Both room temperature and high temperature properties of bar gained by HLHL＂ （ high low high low） process are better than that of the traditional forging process.

关 键 词：TA12A钛合金 锻造工艺 组织与性能 

分 类 号：TG319[金属学及工艺—金属压力加工]