固溶温度对一种新型镍基高温合金微观组织和力学性能的影响

doi:10.13251/j.issn.0254-6051.2023.12.003

金属热处理 ›› 2023, Vol. 48 ›› Issue (12): 13-20.DOI: 10.13251/j.issn.0254-6051.2023.12.003

固溶温度对一种新型镍基高温合金微观组织和力学性能的影响

段继萱^1,2, 安腾^1,2, 王成宇^1,2, 谷雨^1,2, 吕旭东^1,2, 杜金辉^1,2

1.钢铁研究总院有限公司高温材料研究所, 北京 100081;
2.北京钢研高纳科技股份有限公司, 北京 100081

收稿日期:2023-07-04 修回日期:2023-09-28 出版日期:2023-12-25 发布日期:2024-01-29
通讯作者: 安腾,男,高级工程师,博士,E-mail: anteng.1009@163.com
作者简介:段继萱(1998—),女,硕士研究生,主要研究方向为新型镍基高温合金的组织及力学性能,E-mail:duanjixuan2016@163.com。
基金资助:
国家重点研发项目(2022YFF0609300)

Effect of solution treatment temperature on microstructure and mechanical properties of a new nickel-based superalloy

Duan Jixuan^1,2, An Teng^1,2, Wang Chengyu^1,2, Gu Yu^1,2, Lü Xudong^1,2, Du Jinhui^1,2

1. High Temperature Materials Research Institute, Central Iron and Steel Research Institute Co., Ltd., Beijing 100081, China;
2. Beijing CISRI-GAONA Materials and Technology Co., Ltd., Beijing 100081, China

Received:2023-07-04 Revised:2023-09-28 Online:2023-12-25 Published:2024-01-29

摘要/Abstract

摘要： 研究了固溶温度(1080~1120 ℃)对一种新型镍基高温合金的微观组织演变、拉伸性能及高温持久性能的影响。结果表明,随着固溶温度的升高,合金晶粒尺寸增加,一次γ′相数量与尺寸减少,二次 γ′相尺寸与数量增大。当固溶温度超过1095 ℃后,一次γ′相几乎完全回溶,晶粒长大迅速。随着固溶温度升高,合金的室温与750 ℃高温抗拉强度和屈服强度下降,持久时间增加,持久塑性下降。1120 ℃+1080 ℃双固溶处理没有提高合金的室温和750 ℃高温拉伸性能,却明显改善合金的750 ℃持久性能。对于固溶温度-微观组织-力学性能之间的关联性,随着固溶温度升高,合金晶粒尺寸增大,一次γ′相数量减少,微观组织改变引起合金强度下降,持久时间上升。

关键词: 镍基高温合金, 固溶处理温度, 微观组织演变, 拉伸性能, 持久性能

Abstract: Effect of solution treatment temperature (1080-1120 ℃) on the microstructure evolution, tensile properties and high temperature stress-ruptue properties of a new nickel-based superalloy were studied. The results show that with the increase of solution treatment temperature, the grain size of the tested superalloy increases, the number and size of the primary γ′ phase decrease, and the size and number of the secondary γ′ phase increase. When the solution treatment temperature exceeds 1095 ℃, the primary γ′ is almost re-dissolved and the grains grow rapidly. Moreover, the room temperature and 750 ℃ high temperature tensile strength and yield strength of the alloy decrease with the increase of solution treatment temperature, the endurance time increases and the creep plasticity decreases. The 1120 ℃+1080 ℃ double solution treatment cannot improve the room temperature and 750 ℃ high temperature tensile properties of the alloy, but can significantly improve the 750 ℃ creep properties. For the correlations among solution treatment temperature, microstructure, and mechanical properties, with the solution treatment temperature increases, the grain size of the alloy increases, the number of primary γ′ phases decreases, and the microstructure changes cause a decrease in the strength of the alloy and an increases in the endurance time.

Key words: nickel-based superalloy, solution treatment temperature, microstructure evolution, tensile properties, stress-ruptue properties

中图分类号:

TG156.1

段继萱, 安腾, 王成宇, 谷雨, 吕旭东, 杜金辉. 固溶温度对一种新型镍基高温合金微观组织和力学性能的影响[J]. 金属热处理, 2023, 48(12): 13-20.

Duan Jixuan, An Teng, Wang Chengyu, Gu Yu, Lü Xudong, Du Jinhui. Effect of solution treatment temperature on microstructure and mechanical properties of a new nickel-based superalloy[J]. Heat Treatment of Metals, 2023, 48(12): 13-20.

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固溶温度对一种新型镍基高温合金微观组织和力学性能的影响

Effect of solution treatment temperature on microstructure and mechanical properties of a new nickel-based superalloy

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