锻压技术

锻造工艺对TA12A钛合金组织性能的影响规律研究

英文标题：Study on influence of forging process on microstructure and properties of titanium alloy TA12A

分类号：TG146.2+3

出版年,卷(期):页码：2015,40(8):124-126

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 microstructure 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 microstructure 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.

基金项目：

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）

杜予晅（1977-），男，博士，工程师

参考文献：

［1］方波，程明，陈仲强，等. TA12钛合金板材成形性能试验[J]. 精密成形工程，2011，(4):20-22. Fang B,Cheng M,Chen Z Q,et al. Research on the formability of TA12 titanium alloy sheet[J]. Journal of Netshape Forming Engineering，2011，(4):20-22.
［2］Leyens C, Peters M. Titanium and Titanium Alloys[M]. Germany:Wiley Online Library, 2003.
［3］许国栋，王凤娥. 高温钛合金的发展和应用[J]. 稀有金属, 2008, 32(6): 774-780.Xu G D, Wang F E. Development and application of high temperature titanium alloy[J]. Chinese Journal of Rare Metals, 2008,32(6):774-780.
［4］Jackson M, Dring K. A review of advances in processing and metallurgy of titanium alloys[J]. Materials Science and Technology,2006,22:881-887.
［5］Sun Z, Yang H. Microstructure and mechanical properties of TA15 titanium alloy under multi-step local loading forming[J]. Materials Science and Engineering: A, 2009, 523(1-2): 184-192.
［6］刘瑞民，李四清. Ti-6242合金的热力学参数研究[J]. 热加工工艺, 2005,34(12): 18-19.Liu R M,Li S Q. Study on thermodynamic parameters of Ti-6242[J].Hot Working Technology, 2005,34(12): 18-19.
［7］Prasad K, Kumar V. Isothermal and thermomechanical fatigue behaviour of Ti–6Al–4V titanium alloy[J]. Materials Science and Engineering: A,2011, 528(19-20): 6263-6270.
［8］Matsumoto H, Kitamura M, Li Y, et al. Hot forging characteristic of Ti–5Al–5V–5Mo–3Cr alloy with single metastable β microstructure[J]. Materials Science and Engineering: A,2014,611:337-44.
［9］冯永琦，李渭清，张顺利，等. TA19钛合金锻造工艺研究[J].稀有金属材料与工程，2005,34(10):529-531.Feng Y Q，Li W Q, Zhang S L, et al. Study on forging process of TA19 titanium alloy[J]. Rare Metal Materials and Engineering, 2005, 34(10):529-531.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】