固溶温度对TA19钛合金组织及性能的影响  

Influence of Solution Temperature on Microstructures and Mechanical Properties of TA19 Titanium Alloy

作　　者：张永强 赖运金[2] 张国栋 雷锦文[2] 任勇 尚金金[2] 史小云[2] 王建国[2] ZHANG Yongqiang LAI Yunjin ZHANG Guodong LEI Jinwen REN Yong SHANG Jinfin SHI Xiaoyun WANG Jianguo(AECC Commercial Aircraft Engine Co., Ltd, Shanghai 201108, China NLEL for Special Titanium Alloy Material Manufacturing, Western Superconducting Technologies Co., Ltd, Xi＇ an 710018, China)

机构地区：[1]中国航发商用航空发动机有限责任公司,上海201108 [2]西部超导材料科技股份有限公司特种钛合金材料制备技术国家地方联合工程实验室,陕西西安710018

出　　处：《材料开发与应用》2017年第4期44-49,共6页Development and Application of Materials

基　　金：国家重点研发计划(2016YFB0701305);陕西省科技统筹创新工程计划(2016KTCQ01-100)

摘　　要：采用5种不同固溶温度和相同时效温度的热处理制度对TA19钛合金进行固溶时效处理,研究不同固溶温度对显微组织和力学性能的影响。结果表明,固溶温度对TA19钛合金显微组织的初生α相含量影响显著;经相变点以下10℃到50℃固溶保温1 h后风冷,再经595℃时效保温8 h后空冷,获得的室温和高温力学性能均能满足AMS 4975标准的要求;固溶温度选择相变点以下10℃时,TA19钛合金的室温和高温力学性能及蠕变性能匹配最好,对应的显微组织中初生α相含量为15%~18%。The effects of different solution temperatures on the mierostructures and mechanical properties of TA19 titanium alloy were studied by means of heat treatment at different solution temperatures and the same aging temperature. The results showed that the so- lution temperature had a significant effect on the content of primary a phase of TA19 titanium alloy microstructure. When TA19 titani- um alloys were solution treated by at 10 ℃ to 50℃ bellow Tβ for 1 h, blowing cooling and then were aged at 595℃/8 h, air cooling, their room temperature and high temperature mechanical properties could meet the requirements of AMS 4975 standard. The overall properties of TA19 titaniam including mechanical properties at room and high temperatures and creep properties were the best when the alloy was treated by Tβ - 10 ℃/1 h, blowing cooling ＋595 ℃/8 h, air cooling, and then its content of primary α phase was 15% - 18%.

关 键 词：TA19钛合金 热处理 显微组织 力学性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]