应力对单晶高温合金再结晶的影响

doi:10.13251/j.issn.0254-6051.2022.02.009

金属热处理 ›› 2022, Vol. 47 ›› Issue (2): 48-52.DOI: 10.13251/j.issn.0254-6051.2022.02.009

应力对单晶高温合金再结晶的影响

李永顺¹, 玄伟东¹, 段方苗², 赵玉娟¹, 李俊杰¹, 王保军¹, 任兴孚¹, 任忠鸣¹

1.上海大学材料科学与工程学院省部共建高品质特殊钢冶金与制备国家重点实验室, 上海 200444;
2.中国联合重型燃气轮机技术有限公司, 北京 100061

收稿日期:2021-09-25 修回日期:2021-12-05 出版日期:2022-02-25 发布日期:2022-04-01
通讯作者: 玄伟东,副研究员,E-mail:wdxuan@shu.edu.cn
作者简介:李永顺(1995—),男,硕士研究生,主要研究方向为热处理过程中单晶高温合金的再结晶,E-mail:2518891651@qq.com。
基金资助:
国家科学技术重大项目(2017-Ⅶ-0008-0102);国家自然科学基金(92060104);国家自然科学基金重大计划(51690162);上海市科学技术委员会(20511107700);中国重燃项目(F035)

Effect of stress on recrystallization of single crystal superalloy

Li Yongshun¹, Xuan Weidong¹, Duan Fangmiao², Zhao Yujuan¹, Li Junjie¹, Wang Baojun¹, Ren Xingfu¹, Ren Zhongming¹

1. State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;
2. China United Gas Turbine Technology Co., Ltd., Beijing 100061, China

Received:2021-09-25 Revised:2021-12-05 Online:2022-02-25 Published:2022-04-01

摘要/Abstract

摘要： 通过试验和理论计算相结合的方法研究了应力对单晶高温合金再结晶形成规律的影响。结果表明,再结晶的形成与应力密切相关。当施加的应力高于临界应力时才会产生再结晶,而低于临界应力则不会产生再结晶,并且再结晶临界应力随着温度的升高而降低。在相同温度下,试验合金的再结晶层厚度随着应力的增加而呈线性增加;在相同应力下,再结晶层厚度随着温度的升高而呈指数增长。此外,随着温度的升高,再结晶层厚度的增长速率随应力的增加而增大。

关键词: 单晶高温合金, 再结晶, 应力, 温度, γ′相

Abstract: Effect of stress on recrystallization formation law of single crystal superalloy was studied through a combination of experiment and theoretical calculation. The results show that the formation of recrystallization is closely related to stress. Recrystallization only occurs when the applied stress is higher than the critical stress, but not occur when the applied stress is lower than the critical stress, meanwhile the critical stress of recrystallization decreases with the increase of temperature. At the same temperature, the thickness of recrystallization layer of the tested alloy increases linearly with the increase of stress. Under the same stress, the thickness of recrystallization layer increases exponentially with the increase of temperature. In addition, with the increase of temperature, the increasing rate of recrystallization layer thickness accelerates due to the increase of stress.

Key words: single crystal superalloy, recrystallization, stress, temperature, γ′ phase

中图分类号:

TG132.3

李永顺, 玄伟东, 段方苗, 赵玉娟, 李俊杰, 王保军, 任兴孚, 任忠鸣. 应力对单晶高温合金再结晶的影响[J]. 金属热处理, 2022, 47(2): 48-52.

Li Yongshun, Xuan Weidong, Duan Fangmiao, Zhao Yujuan, Li Junjie, Wang Baojun, Ren Xingfu, Ren Zhongming. Effect of stress on recrystallization of single crystal superalloy[J]. Heat Treatment of Metals, 2022, 47(2): 48-52.

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应力对单晶高温合金再结晶的影响

Effect of stress on recrystallization of single crystal superalloy

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