固溶时效处理对Ti-5.43Al-3.11Mo-1.41V合金显微组织和力学性能的影响

doi:10.13251/j.issn.0254-6051.2021.07.029

金属热处理 ›› 2021, Vol. 46 ›› Issue (7): 155-159.DOI: 10.13251/j.issn.0254-6051.2021.07.029

固溶时效处理对Ti-5.43Al-3.11Mo-1.41V合金显微组织和力学性能的影响

陈浩¹, 侯岳红¹, 张曦², 魏亚², 杨义¹, 吴松全¹, 李阁平³, 梁恩泉², 黄爱军⁴

1.上海理工大学材料科学与工程学院, 上海 200093;
2.上海飞机设计研究院, 上海 201210;
3.中国科学院金属研究所, 辽宁沈阳 110016;
4.Department of Materials Science and Engineering, Monash University, Clayton, VIC, 3800, Australia

收稿日期:2021-03-01 出版日期:2021-07-25 发布日期:2021-12-10
通讯作者: 杨义,副教授,博士,E-mail: yiyang.imr@163.com
作者简介:陈浩(1996—),男,硕士研究生,主要研究方向为钛合金热处理及表面处理,E-mail:ch762590@163.com。

Effect of solution and aging treatment on microstructure and mechanical properties of Ti-5.43Al-3.11Mo-1.41V titanium alloy

Chen Hao¹, Hou Yuehong¹, Zhang Xi², Wei Ya², Yang Yi¹, Wu Songquan¹, Li Geping³, Liang Enquan², Huang Aijun⁴

1. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2. Shanghai Aircraft Design and Research Institute, Shanghai 201210, China;
3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China;
4. Department of Materials Science and Engineering, Monash University, Clayton, VIC, 3800, Australia

Received:2021-03-01 Online:2021-07-25 Published:2021-12-10

摘要/Abstract

摘要： 对BT14钛合金(Ti-5.43Al-3.11Mo-1.41V)进行不同温度固溶+时效热处理,研究了固溶温度对合金的显微组织、元素分布和硬度和压缩性能的影响。结果表明,在β相转变温度以下固溶后,随固溶温度上升,初生α相含量不断减少,初生α相和基体相(α′、α″或亚稳β相)中的Al含量均增加,Mo和V含量均下降,显微硬度上升。890、940、990 ℃固溶+540 ℃×6 h时效处理后,基体相分解形成弥散细小的α+β相,起到显著的强化作用,导致显微硬度整体提高,且随着固溶温度的升高,显微硬度和压缩屈服强度提高。

关键词: BT14钛合金, 固溶, 时效, 显微组织, 力学性能

Abstract: Effect of solution temperature on microstructure, element distribution, hardness and compression properties of the BT14 titanium alloy (Ti-5.43Al-3.11Mo-1.41V) under different temperature solution and aging treatment was studied. The results show that after solid solution below the β phase transition temperature, the volume fraction of primary α phase in the alloy decreases as the solution temperature increases, both the Al content in primary α phase and matrix phase (α′, α″, metastable β phase) increase, while the Mo and V contents decrease, meanwhile, the microhardness increases. After solution treatment at 890, 940, 990 ℃, respectively, and then all aging at 540 ℃ for 6 h, the matrix phase of the alloy decomposes into fine α+β phases, which result in the microhardness increasing, moreover, the microhardness and compressive yield strength increase as the solution temperature increases.

Key words: BT14 titanium alloy, solution treatment, aging treatment, microstructure, mechanical properties

中图分类号:

TG146.23

陈浩, 侯岳红, 张曦, 魏亚, 杨义, 吴松全, 李阁平, 梁恩泉, 黄爱军. 固溶时效处理对Ti-5.43Al-3.11Mo-1.41V合金显微组织和力学性能的影响[J]. 金属热处理, 2021, 46(7): 155-159.

Chen Hao, Hou Yuehong, Zhang Xi, Wei Ya, Yang Yi, Wu Songquan, Li Geping, Liang Enquan, Huang Aijun. Effect of solution and aging treatment on microstructure and mechanical properties of Ti-5.43Al-3.11Mo-1.41V titanium alloy[J]. Heat Treatment of Metals, 2021, 46(7): 155-159.

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固溶时效处理对Ti-5.43Al-3.11Mo-1.41V合金显微组织和力学性能的影响

Effect of solution and aging treatment on microstructure and mechanical properties of Ti-5.43Al-3.11Mo-1.41V titanium alloy

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