高温长时在役GH4145合金螺栓的显微组织和力学性能

doi:10.13251/j.issn.0254-6051.2025.03.030

金属热处理 ›› 2025, Vol. 50 ›› Issue (3): 189-195.DOI: 10.13251/j.issn.0254-6051.2025.03.030

高温长时在役GH4145合金螺栓的显微组织和力学性能

周浩¹, 杜豪杰², 曾燕屏², 郭德瑞¹, 李炜丽¹, 马志宝¹, 王庆峰¹, 李旌鑫¹

1.中国大唐集团科学技术研究总院有限公司华北电力试验研究院, 北京 100043;
2.北京科技大学材料科学与工程学院, 北京 100083

收稿日期:2024-12-28 修回日期:2025-01-21 出版日期:2025-03-25 发布日期:2025-05-14
通讯作者: 曾燕屏,教授,博士,E-mail:zengyanping@mater.ustb.edu.cn
作者简介:周浩(1995—),男,工程师,硕士,主要研究方向为电站金属材料,E-mail:ustbzhouhao@163.com。

Microstructure and mechanical properties of long-term high temperature serviced superalloy GH4145 bolt

Zhou Hao¹, Du Haojie², Zeng Yanping², Guo Derui¹, Li Weili¹, Ma Zhibao¹, Wang Qingfeng¹, Li Jingxin¹

1. North China Electric Power Test and Research Institute, China Datang Group Science and Technology Research Institute Co., Ltd., Beijing 100043, China;
2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received:2024-12-28 Revised:2025-01-21 Online:2025-03-25 Published:2025-05-14

摘要/Abstract

摘要： 对在537 ℃环境下服役约6万余小时的GH4145合金螺栓及标准热处理态(未服役)GH4145合金棒材进行了对比研究。采用光学显微镜(OM)、扫描电镜(SEM)、能谱分析(EDS)观察分析两种试样的显微形貌及析出相特征,并对其进行布氏硬度、室温和高温拉伸性能、冲击性能和持久性能测试。结果表明,两种试样组织均为典型的奥氏体,晶内有孪晶和碳化物。服役螺栓的晶粒平均尺寸较未服役棒材无明显增大。服役螺栓螺纹和光杆处的γ′相尺寸和体积分数基本相同,服役螺栓中γ′相的尺寸大于未服役态,γ′相体积分数也略高于未服役态。力学性能方面,除服役螺栓光杆处硬度值偏高外,服役螺栓和未服役螺栓的室温拉伸和高温持久性能均符合标准要求,其中光杆处的屈服强度均高于螺纹处,且服役态螺栓的硬度、强度均比未服役态高。

关键词: GH4145合金, 高温服役螺栓, 显微组织, 力学性能

Abstract: A comparative study between GH4145 alloy bolt served for about 60 000 h at 537 ℃ and standard heat treated (unserved) GH4145 alloy bars was carried out. The microstructure and precipitated phase characteristics of the both specimens were observed and analyzed by means of optical microscope (OM), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The Brinell hardness, tensile properties at room temperature and high temperature, impact properties and endurance properties were tested. The results show that the microstructure of both specimens is typical austenite, with twins and carbides in the grains. The average grain size of the serviced bolt is not significantly larger than that of the unserviced bar. The size and volume fraction of γ′ phase at the thread and polished rod of the serviced bolt are basically the same. The size and the volume fraction of γ′ phase in the serviced bolt are larger and higher than those in the unserviced state. In terms of mechanical properties, in addition to the high hardness value at the polished rod of the service bolt, the room temperature tensile and high temperature durability properties of the serviced bolt and the unserviced bolt both meet the standard requirements. The yield strength at the polished rod is higher than that at the thread, and the hardness and strength of the serviced bolt are higher than those of the unserviced state.

Key words: superalloy GH4145, high temperature serviced bolt, microstructure, mechanical properties

中图分类号:

TG156.9

周浩, 杜豪杰, 曾燕屏, 郭德瑞, 李炜丽, 马志宝, 王庆峰, 李旌鑫. 高温长时在役GH4145合金螺栓的显微组织和力学性能[J]. 金属热处理, 2025, 50(3): 189-195.

Zhou Hao, Du Haojie, Zeng Yanping, Guo Derui, Li Weili, Ma Zhibao, Wang Qingfeng, Li Jingxin. Microstructure and mechanical properties of long-term high temperature serviced superalloy GH4145 bolt[J]. Heat Treatment of Metals, 2025, 50(3): 189-195.

参考文献

[1] 李鑫, 武志广, 赵吉庆, 等. 20Cr1Mo1VTiB螺栓钢高温长期时效后的组织演变及力学性能[J]. 金属热处理, 2023, 48(9): 197-202.
Li Xin, Wu Zhiguang, Zhao Jiqing, et al. Microstructure evolution and mechanical properties of 20Cr1Mo1VTiB bolt steel after long-term aging at high temperature[J]. Heat Treatment of Metals, 2023, 48(9): 197-202.
[2] 郑建军, 樊子铭, 程旭, 等. 中压主汽门用20Cr1Mo1VTiB钢紧固螺栓断裂分析[J]. 金属热处理, 2023, 48(11): 293-299.
Zheng Jianjun, Fan Ziming, Cheng Xu, et al. Fracture analysis of 20Cr1Mo1VTiB steel fastening bolts used for intermediate pressure main stop valve[J]. Heat Treatment of Metals, 2023, 48(11): 293-299.
[3] 韩哲文, 王智春, 王家健, 等. 恢复热处理对R26高温合金螺栓组织和力学性能的影响[J]. 金属热处理, 2023, 48(5): 184-190.
Han Zhewen, Wang Zhichun, Wang Jiajian, et al. Effect of recovery heat treatment on microstructure and mechanical properties of R26 super alloy bolts[J]. Heat Treatment of Metals, 2023, 48(5): 184-190.
[4] Moshayedi H, Moattari M, Azizpour K. Failure analysis of outer casing bolts of a 325 MW steam turbine[J]. Engineering Failure Analysis, 2019, 97: 189-200. `
[5] 杜晋峰. 560 ℃时效处理对GH4145合金螺栓组织的影响[J]. 金属热处理, 2016, 41(11): 40-44.
Du Jinfeng. Effect of aging treatment on microstructure of GH4145 alloy bolt at 560 ℃[J]. Heat Treatment of Metals, 2016, 41(11): 40-44.
[6] Ye D. Effect of cyclic straining at elevated-temperature on static mechanical properties, microstructures and fracture behavior of nickel-based superalloy GH4145/SQ[J]. International Journal of Fatigue, 2005, 27(9): 1102-1114.
[7] 华培涛, 陈斯博, 张伟红, 等. GH4145合金中γ′相析出对晶界片状M23C6相析出的影响[J]. 航空制造技术, 2020, 63(3): 92-95, 102.
Hua Peitao, Chen Sibo, Zhang Weihong, et al. Effect of γ′ precipitation on lamellar M23C6 carbide precipitation in GH4145 alloy[J]. Aeronautical Manufacturing Technology, 2020, 63(3): 92-95, 102.
[8] Floreen S, Nelson J L. The effects of heat treatment and composition on the stress corrosion cracking resistance of Inconel alloy X-750[J]. Metallurgical Transactions A, 1983, 14(1): 133-139.
[9] Barlow C Y, Ralph B. Observations of cellular transformation products in nickel-base superalloys[J]. Journal of Materials Science, 1979, 14(10): 2500-2508.
[10] Hattori K, Tsubota M, Okada T. Effect of chloride on the stress corrosion cracking susceptibility of Inconel X-750 in high-temperature water[J]. Corrosion, 1986, 42(9): 531-532.
[11] 刘猛, 李爱民, 张欢欢, 等. 冶炼工艺对GH4145合金显微组织和力学性能的影响[J]. 中国冶金, 2020, 30(10): 17-21.
Liu Meng, Li Aimin, Zhang Huanhuan, et al. Effect of melting technologies on microstructure and mechanical properties of GH4145 superalloy[J]. China Metallurgy, 2020, 30(10): 17-21.
[12] 曾燕屏, 姚大志, 蔡文河, 等. GH4145合金应力松弛性能研究[J]. 稀有金属材料与工程, 2017, 46(11): 3316-3320.
Zeng Yanping, Yao Dazhi, Cai Wenhe, et al. Stress relaxation behavior of GH4145 alloy[J]. Rare Metal Materials and Engineering, 2017, 46(11): 3316-3320.
[13] 姚大志, 曾燕屏, 杜毫杰, 等. 高温时效对GH4145合金显微组织与力学性能的影响[J]. 材料热处理学报, 2015, 36(11): 35-39.
Yao Dazhi, Zeng Yanping, Du Haojie, et al. Effect of thermal exposure on microstructure and mechanical properties of GH4145 alloy[J]. Transactions of Materials and Heat Treatment, 2015, 36(11): 35-39.
[14] 阎光宗, 柯浩, 徐雪霞, 等. 恢复热处理对GH4145/SQ螺栓组织性能的影响[J]. 热加工工艺, 2012, 41(14): 206-208.
Yan Guangzong, Ke Hao, Xu Xuexia, et al. Effect of recovery heat treatment on microstructure and properties of GH4145/SQ bolt material[J]. Hot Working Technology, 2012, 41(14): 206-208.
[15] 吴跃, 刘俊建, 陈顺, 等. 超临界机组R26高温合金螺栓典型组织与性能[J]. 金属热处理, 2019, 44(6): 22-28.
Wu Yue, Liu Junjian, Chen Shun, et al. Typical microstructure and properties of R26 superalloy bolt for supercritical unit[J]. Heat Treatment of Metals, 2019, 44(6): 22-28.
[16] 陈小林, 杨点中, 楼玉民, 等. 镍基高温合金GH4145/SQ螺栓寿命预测[J]. 浙江电力, 2005(2): 47-50.
Chen Xiaolin, Yang Dianzhong, Lou Yumin, et al. Life prediction of nicel-based superalloy GH4145/SQ bolt[J]. Zhejiang Electric Power, 2005(2): 47-50.
[17] Nembach E, Pesicka J, Mohles V, et al. The effects of a second aging treatment on the yield strength of γ′-hardened NIMONIC PE16-polycrystals having γ′-precipitate free zones[J]. Acta Materialia, 2005, 53(8): 2485-2494.
[18] 吴倩颖, 杨雷岗. 基于C#持久蠕变强度外推功能的实现[J]. 物理测试, 2021, 39(4): 56-60.
Wu Qianying, Yang Leigang. Realization of extrapolation of creep rupture strength based on C#[J]. Physics Examination and Testing, 2021, 39(4): 56-60.

高温长时在役GH4145合金螺栓的显微组织和力学性能

Microstructure and mechanical properties of long-term high temperature serviced superalloy GH4145 bolt

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