热处理对X-5钛合金棒材组织与性能的影响  

Effect of Heat Treatment on Microstructure and Properties of X-5 Titanium Alloy Bars

作　　者：李辉[1] 王飞云 杜小联 侯峰起 陈蓬[1] 韩飞孝 赖运金 

机构地区：[1]中航工业第一飞机设计研究院,陕西西安710089 [2]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 [3]西北工业大学,陕西西安710068

出　　处：《钛工业进展》2017年第3期24-28,共5页Titanium Industry Progress

基　　金：国家重点研发计划(2016YFB0701305);陕西省重大科技成果转化引导专项项目(2015KTCG01-11)

摘　　要：研究了ф16 mm的X-5钛合金棒材在不同热处理条件下的显微组织和力学性能。结果表明:采用800℃×60min/AC和850℃×10 min/AC进行固溶处理,ф16 mm的X-5钛合金棒材可以获得较好的显微组织和室温力学性能;在800℃×60 min/AC+500℃×8 h/AC的固溶加时效制度下,ф16 mm的X-5钛合金棒材可以获得最好的强化效果,且塑性也能满足设计需要;不同的固溶冷却方式则对ф16 mm的X-5钛合金棒材的室温力学性能影响不大。The microstructures and mechanical properties of X-5 titanium alloy bar with Φ16 mm in diameter treated with different heat treatments were studied. The results show that the microstructures and mechanical properties of X-5 titanium alloy bar with Φ16 mm in diameter treated by solution at 800 ℃ ×60 min/AC and 850 ℃ ×10 min/AC are better. X-5 titanium alloy bar with 800 ℃ × 60 min/AC ＋ 500 ℃ × 8 h/AC solution and aging treatment can get the best strengthening effect, and the ductility can meet the design needs. The cooling method of solution treatment has little effect on the mechanical properties of X-5 titanium alloy bar with Φ16 mm in diameter at room temperature.

关 键 词：X-5钛合金 固溶时效 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] TG166.5[金属学及工艺—金属材料]