固溶温度对Ti662钛合金组织与高温拉伸性能的影响

doi:10.13251/j.issn.0254-6051.2025.10.027

金属热处理 ›› 2025, Vol. 50 ›› Issue (10): 174-178.DOI: 10.13251/j.issn.0254-6051.2025.10.027

固溶温度对Ti662钛合金组织与高温拉伸性能的影响

乔恩利, 张明玉, 顾忠明

新疆湘润新材料科技有限公司, 新疆哈密 839000

收稿日期:2025-04-28 修回日期:2025-08-19 出版日期:2025-10-25 发布日期:2025-11-04
通讯作者: 张明玉,工程师,博士,E-mail: zmyu0713@126.com
作者简介:乔恩利(1976—),男,高级工程师,学士,主要研究方向为金属压力加工,E-mail: Qiao20091230@163.com。
基金资助:
天山英才培养计划-第二批-优秀工程师(EB0055)

Effect of solution temperature on microstructure and high-temperature tensile properties of Ti662 titanium alloy

Qiao Enli, Zhang Mingyu, Gu Zhongming

Xinjiang Xiangrun New Materials Technology Co., Ltd., Hami Xinjiang 839000, China

Received:2025-04-28 Revised:2025-08-19 Online:2025-10-25 Published:2025-11-04

摘要/Abstract

摘要： 对Ti662钛合金进行不同温度(900、920、940和960 ℃)×2 h固溶+560 ℃×6 h时效处理,随后在400 ℃进行拉伸试验,研究固溶温度对其组织与高温拉伸性能的影响。结果表明,随着固溶温度的升高,固溶时效处理合金的物相均为α相和β相,初生α相逐渐减少直至消失,而次生α相含量增加,呈细小针状均匀分布。400 ℃高温拉伸试验表明,随着固溶温度的升高,合金的抗拉强度和屈服强度提高,但断后伸长率和断面收缩率下降。综合考虑强塑性匹配,最佳固溶时效工艺为940 ℃×2 h+560 ℃×6 h。

关键词: Ti662钛合金, 固溶温度, 微观组织, 高温拉伸性能

Abstract: Ti662 titanium alloy was subjected to solution treatment at different temperatures (900, 920, 940 and 960 ℃) for 2 h followed by aging treatment at 560 ℃ for 6 h, and then tensile test was conducted at 400 ℃ to study the effect of solution temperature on microstructure and high-temperature tensile properties. The results show that with the increase of solution temperature, the phases of the alloy after solution and aging treatment are both α phase and β phase. The primary α phase gradually decreases until it disappears, while the content of secondary α phase increases, presenting a fine acicular and uniform distribution. The high-temperature tensile test at 400 ℃ show that with the increase of solution temperature, both the tensile strength and yield strength of the alloy increase, while the elongation after fracture and percentage reduction of area decrease. Considering the matching of strength and plasticity, the best heat treatment process is 940 ℃×2 h + 560 ℃×6 h.

Key words: Ti662 titanium alloy, solution temperature, microstructure, high-temperature tensile properties

中图分类号:

TG166.5

乔恩利, 张明玉, 顾忠明. 固溶温度对Ti662钛合金组织与高温拉伸性能的影响[J]. 金属热处理, 2025, 50(10): 174-178.

Qiao Enli, Zhang Mingyu, Gu Zhongming. Effect of solution temperature on microstructure and high-temperature tensile properties of Ti662 titanium alloy[J]. Heat Treatment of Metals, 2025, 50(10): 174-178.

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固溶温度对Ti662钛合金组织与高温拉伸性能的影响

Effect of solution temperature on microstructure and high-temperature tensile properties of Ti662 titanium alloy

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