摘要
Ti-6.5Al-3.5Mo-1.5Zr-0.3Si合金经二次熔炼、锻造成棒材,然后再浇铸成试棒。介绍了这种合金的铸态室温及高温拉伸性能。试验表明,在600℃时的高温强度与塑性匹配较好,可用作为600℃高温结构件用。同时,分析了合金经不同制度热处理后的显微组织、室温拉伸、高温拉伸及持久性能变化。结果表明:合金在960℃×1.5 h,AC+550℃×8 h,AC处理后得到网篮组织,表现出良好的综合力学性能。
Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy was melted by two times and forged into bar, and then cast into a test bar. The tensile properties of the alloy at room temperature an6 high temperature were introduced. The experimental results show that the high temperature strength of the alloy at 600 ℃ is well matched with the plastic, and can be used for structural parts of 600 ℃. At the same time, the microstructure of the alloy after heat treatment was analyzed, and the changes of tensile strength at room temperature, tensile strength and lasting properties at high temperature were＇ also analyzed. The results show that the basket microstructure in the alloy after heat treatment at 960℃×1.5 h,AC＋550℃×8 h, AC has good mechanical properties.
作者
刘娣
张利军
刘小花
周中波
薛祥义
郭凯
LIU Di ZHANG Lijun LIU Xiaohua ZHOU Zhongbo XUE Xiangyi GUO Kai(Xi＇an Super Crystal Sei-Tech Development Co., Ltd., Xi＇an 710016, China State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi＇an 710072, China)
出处
《铸造技术》
CAS
北大核心
2017年第3期521-524,共4页
Foundry Technology
关键词
高温钛合金
热处理
显微组织
力学性能
high temperature titanium alloy
heat treatment
microstructure
mechanical properties
