近α型、(α+β)型和近β型钛合金的高温力学性能

doi:10.13251/j.issn.0254-6051.2022.11.035

金属热处理 ›› 2022, Vol. 47 ›› Issue (11): 199-204.DOI: 10.13251/j.issn.0254-6051.2022.11.035

近α型、(α+β)型和近β型钛合金的高温力学性能

李明兵, 王新南, 商国强, 祝力伟, 李星, 朱知寿

中国航空发动机集团北京航空材料研究院先进钛合金重点实验室, 北京 100095

收稿日期:2022-06-17 修回日期:2022-09-22 出版日期:2022-11-25 发布日期:2023-01-04
通讯作者: 朱知寿,研究员,博士,E-mail:zszhu@126.com
作者简介:李明兵(1990—),男,工程师,硕士,主要研究方向为钛合金,E-mail:limingbing1990@163.com。
基金资助:
中国航发自主创新专项资金(CXPT-2020-032)

High temperature mechanical properties of near α, (α+β) and near β type titanium alloys

Li Mingbing, Wang Xinnan, Shang Guoqiang, Zhu Liwei, Li Xing, Zhu Zhishou

Key Laboratory of Advanced Titanium Alloys, Beijing Institute of Aeronautical Materials,Aero Engine Corporation of China, Beijing 100095, China

Received:2022-06-17 Revised:2022-09-22 Online:2022-11-25 Published:2023-01-04

摘要/Abstract

摘要： 研究了近α型TA15和Ti60、(α＋β)型TC21和近β型TB17钛合金在100、400、500、600、650和700 ℃时的高温力学性能。结果表明,温度在100~500 ℃时,TB17合金的高温强度最高,TA15合金的高温强度最低,TC21合金的高温强度高于Ti60合金;当温度超过600 ℃后,TB17合金的高温性能变化幅度最大,强度最低,Ti60合金的变化幅度最小,强度最高,TC21合金的强度介于TA15与Ti60合金之间,并逐渐与TA15合金接近;当温度在100 ℃时,4种合金应变硬化和应变软化作用相当,应力-应变曲线处于较为平衡的状态;当温度在400 ℃时,TB17合金变形以应变软化为主,应力随着应变增加显著降低;当温度在600 ℃时,TC21和TA15合金变形也开始以应变软化为主,但TA15合金应力的下降幅度低于TC21合金;直到温度在650 ℃时,Ti60合金变形才以应变软化为主。

关键词: 钛合金, 高温性能, 力学行为

Abstract: High temperature mechanical properties of near α type TA15 and Ti60, near β type TB17, (α+β) type TC21 titanium alloys at 100, 400, 500, 600, 650 and 700 ℃ were investigated. The results show that when the temperature is in the range of 100-500 ℃, the high temperature strength of TB17 alloy is the highest, and that of the TA15 alloy is the lowest. The high temperature strength of the TC21 alloy is higher than that of the Ti60 alloy. When temperature exceeds 600 ℃, the high temperature properties of the TB17 alloy change significantly, and the high temperature strength is the lowest. While the Ti60 alloy changes the least, and the high temperature strength is the highest. The high temperature strength of the TC21 alloy is between that of the TA15 and Ti60 alloys, and gradually closes to that of TA15 alloy. When the temperature is 100 ℃, the engineering stress-strain curves of the four alloys are in a relatively balanced state because of comparable strain hardening and strain softening effects. When the temperature is 400 ℃, the deformation mechanism of the TB17 alloy is dominated by strain softening, and the stress decreases significantly with the increase of strain. When the temperature is 600 ℃, the deformation mechanism of the TC21 and TA15 alloys is also dominated by strain softening, while the stress drop of the TA15 alloy is lower than that of the TC21 alloy. Until the temperature is 650 ℃, the deformation mechanism of the Ti60 alloy is dominated by strain softening.

Key words: titanium alloy, high temperature property, mechanical behavior

中图分类号:

TG146

李明兵, 王新南, 商国强, 祝力伟, 李星, 朱知寿. 近α型、(α+β)型和近β型钛合金的高温力学性能[J]. 金属热处理, 2022, 47(11): 199-204.

Li Mingbing, Wang Xinnan, Shang Guoqiang, Zhu Liwei, Li Xing, Zhu Zhishou. High temperature mechanical properties of near α, (α+β) and near β type titanium alloys[J]. Heat Treatment of Metals, 2022, 47(11): 199-204.

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近α型、(α+β)型和近β型钛合金的高温力学性能

High temperature mechanical properties of near α, (α+β) and near β type titanium alloys

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