冀宣名,胡爽

• 1:贵州大学材料与冶金学院
• 2:贵州大学高性能金属结构材料与先进制造技术国家地方联合工程实验室

摘要(Abstract)：

采用光学显微镜(OM)、扫描电镜(SEM)、万能试验机和显微硬度计等研究了不同温度时效对热轧后Ti-3.5Al-5Mo-4V钛合金组织及力学性能的影响。结果表明：合金在单相区热轧过程表现出较高的相稳定性，热轧后组织由单一的β相组成，并且热轧过程中发生动态再结晶，而经双相区热轧后，合金的组织由初生α相(α_p)和β相组成。在随后时效热处理过程，随着时效温度的升高，α_p相和析出的次生α相(α_s)逐渐粗化，并且α_s相的含量逐渐减少，导致合金的强度降低、塑性升高。双相区热轧后合金在520℃时效6 h后获得较好的强塑性匹配：抗拉强度为1436.5 MPa,伸长率为9.4%。

关键词(KeyWords)： 钛合金;热处理;组织演变;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51974097);; 贵州省科技支撑计划(2022-050);; 贵州大学培育项目(2020-21)

作者(Author): 冀宣名,胡爽

DOI: 10.13289/j.issn.1009-6264.2022-0151

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