慎松,杨来侠,戴杰,谢启东,李庆宇,陈祯

• 1:西安科技大学机械工程学院
• 2:西安交通大学机械工程学院
• 3:中国航发动力股份有限公司
• 4:西安增材制造国家研究院有限公司

摘要(Abstract)：

采用激光连续粉末床熔融技术制备了TA15(Ti-6.5Al-2Zr-Mo-V)合金试样，并对其进行了不同温度的正火处理。采用光学显微镜、扫描电镜、X射线衍射仪和拉伸试验等研究了热处理温度对TA15合金试样显微组织和力学性能的影响。结果表明：当热处理温度从700℃升高到950℃时，TA15合金试样晶粒尺寸明显增大，KAM角度差明显减小，伸长率明显增加，抗拉强度和屈服强度降低，当热处理温度(1050℃)超过合金的相变温度后，会有β相生成，伸长率又会再次降低。与直接成形试样相比，经过950℃热处理后，试样的室温伸长率提升超过93%,500℃高温伸长率提升超过63.8%,基本满足了其在航空航天领域的使用需求。

关键词(KeyWords)： TA15钛合金;激光连续粉末床熔融;热处理;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金(52005391);; 中国博士后科学基金(2019TQ0259)

作者(Author): 慎松,杨来侠,戴杰,谢启东,李庆宇,陈祯

DOI: 10.13289/j.issn.1009-6264.2023-0489

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