不同预变形DD6单晶高温合金的再结晶临界残余应力

doi:10.13251/j.issn.0254-6051.2026.02.023

金属热处理 ›› 2026, Vol. 51 ›› Issue (2): 153-162.DOI: 10.13251/j.issn.0254-6051.2026.02.023

不同预变形DD6单晶高温合金的再结晶临界残余应力

邱大卫^1,2, 刘记立^1,3, 李喜德¹, 刘维³, 王昊宇³

1.武汉理工大学新材料力学理论与应用湖北省重点实验室, 湖北武汉 430070;
2.湖北三江航天红阳机电有限公司, 湖北孝感 432012;
3.武汉理工大学材料科学与工程学院, 湖北武汉 430070

收稿日期:2025-09-17 修回日期:2026-01-01 发布日期:2026-03-05
通讯作者: 刘记立,副教授,博士,E-mail:ljl0507@163.com
作者简介:邱大卫(2000—),男,硕士研究生,主要研究方向为镍基单晶高温合金的再结晶,E-mail:qdw2023@163.com。
基金资助:
国家自然科学基金(51974217)

Recrystallization critical residual stress of DD6 single crystal superalloy with different pre-deformations

Qiu Dawei^1,2, Liu Jili^1,3, Li Xide¹, Liu Wei³, Wang Haoyu³

1. Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, Wuhan University of Technology, Wuhan Hubei 430070, China;
2. Hubei Sanjiang Aerospace Hongyang Machinery Co., Ltd., Xiaogan Hubei 432012, China;
3. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan Hubei 430070, China

Received:2025-09-17 Revised:2026-01-01 Published:2026-03-05

摘要/Abstract

摘要： 针对不同预变形方式引入的残余应力及其对单晶高温合金再结晶的影响尚缺乏定量研究的问题,采用布氏压痕和压缩两种预变形方法,结合OM、SEM、TEM和纳米压痕技术,系统研究了DD6单晶高温合金在不同热处理工艺下的再结晶临界残余应力。结果表明,在布氏压痕预变形条件下,载荷大小和热处理温度对DD6合金的再结晶行为具有显著影响。随着热处理温度的升高,发生再结晶所需的临界残余应力逐渐降低,且较高的载荷条件会降低再结晶的临界温度。在1310 ℃保温 4 h 的热处理条件下,发生再结晶的临界残余应力小于570.7 MPa。而在压缩预变形条件下,标准固溶处理过程中发生再结晶的临界塑性应变范围为1%~2%,对应的临界残余应力范围为480～670 MPa。

关键词: 镍基高温合金, 再结晶, 热处理, 纳米压痕, 残余应力

Abstract: In view of the lack of quantitative research on the residual stress introduced by different pre-deformation methods and its effect on the recrystallization of single crystal superalloys, the critical residual stress of recrystallization of DD6 single crystal superalloy under different heat treatment conditions was systematically investigated by using two pre-deformation methods of Brinell indentation and compression, combined with OM, SEM, TEM and nanoindentation techniques. The results show that the load and heat treatment temperature have a significant effect on recrystallization behavior of the DD6 alloy under the condition of Brinell indentation pre-deformation. With the increase of heat treatment temperature, the critical residual stress required for recrystallization gradually decreases, and the higher load conditions will reduce the critical temperature of recrystallization. Under the heat treatment condition of 1310 ℃ for 4 h, the critical residual stress of recrystallization is less than 570.7 MPa. Under the condition of compression pre-deformation, the critical plastic strain range for recrystallization after standard solution treatment is 1%-2%, and the corresponding critical residual stress range is 480-670 MPa.

Key words: nickel-based superalloy, recrystallization, heat treatment, nanoindentation, residual stress

中图分类号:

TG132.3

邱大卫, 刘记立, 李喜德, 刘维, 王昊宇. 不同预变形DD6单晶高温合金的再结晶临界残余应力[J]. 金属热处理, 2026, 51(2): 153-162.

Qiu Dawei, Liu Jili, Li Xide, Liu Wei, Wang Haoyu. Recrystallization critical residual stress of DD6 single crystal superalloy with different pre-deformations[J]. Heat Treatment of Metals, 2026, 51(2): 153-162.

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不同预变形DD6单晶高温合金的再结晶临界残余应力

Recrystallization critical residual stress of DD6 single crystal superalloy with different pre-deformations

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