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

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