晶粒度对Inconel 690合金微动磨损行为的影响

doi:10.13251/j.issn.0254-6051.2023.01.003

金属热处理 ›› 2023, Vol. 48 ›› Issue (1): 12-17.DOI: 10.13251/j.issn.0254-6051.2023.01.003

晶粒度对Inconel 690合金微动磨损行为的影响

李萧, 辛龙

北京科技大学国家材料服役安全科学中心, 北京 100083

收稿日期:2022-08-17 修回日期:2022-11-01 出版日期:2023-01-25 发布日期:2023-02-03
通讯作者: 辛龙,副研究员,博士,E-mail:long_xin@ustb.edu.cn
作者简介:李萧(1980—),女,工程师,博士,主要研究方向为材料微观表征技术与应用,E-mail:smilewing@126.com。
基金资助:
国家重点研发计划(2019YFB1900904)

Effect of grain size on fretting wear behavior of Inconel 690 alloy

Li Xiao, Xin Long

National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China

Received:2022-08-17 Revised:2022-11-01 Online:2023-01-25 Published:2023-02-03

摘要/Abstract

摘要： 为预防及减缓微动损伤对核反应堆蒸汽发生器传热管的危害,深入研究了晶粒尺寸对Inconel 690合金微动磨损行为的影响。采用微动磨损试验方法对Inconel 690合金的微动磨损特性展开研究,并利用光学显微镜(OM)、维氏硬度计、扫描电镜(SEM)、能谱仪(EDS)和激光共焦扫描显微镜(LSCM)等对不同固溶温度下材料的微观组织结构、硬度和磨痕特征进行观察和分析。结果表明,随着固溶温度的升高,Inconel 690合金晶粒尺寸增大,硬度降低;在完全滑移区,摩擦因数随晶粒度和硬度的变化很小,其值均约为0.48;当Inconel 690合金平均晶粒尺寸为112 μm,且SS304与Inconel 690合金硬度比为260∶176.4时,Inconel 690合金磨损体积最少;不同晶粒度和硬度下Inconel 690合金的微动磨损机制主要为剥层磨损、磨粒磨损和粘着磨损。

关键词: Inconel 690合金, 晶粒尺寸, 硬度, 摩擦因数, 微动磨损

Abstract: In order to prevent and mitigate the harm of fretting damage to nuclear reactor steam generator tube, the effect of grain size on fretting wear behavior of Inconel 690 alloy was investigated systemically. Fretting wear test was conducted to study fretting wear characteristics of the Inconel 690 alloy, and microstructure, hardness and worn scars characterization of the alloy at different solution temperature were observed by means of OM, Vickers hardness tester, SEM, EDS and LSCM. The results indicate that the grain size increases with the increase of solution temperature, whereas the hardness decreases. In the gross slip regime, the friction factor hardly changes with the variation of grain size and hardness, which is 0.48. The grain size of the Inconel 690 alloy with the value of 112 μm, while the ratio of hardness of SS304 alloy to the Inconel 690 alloy with the value of 260∶176.4 are proved to favor for the alloy to acquire the lowest level of wear volume. With different grain size and hardness, the main mechanism of fretting wear for the Inconel 690 alloy are delamination wear, abrasive wear and adhesive wear.

Key words: Inconel 690 alloy, grain size, hardness, friction factor, fretting wear

中图分类号:

TH117.1

李萧, 辛龙. 晶粒度对Inconel 690合金微动磨损行为的影响[J]. 金属热处理, 2023, 48(1): 12-17.

Li Xiao, Xin Long. Effect of grain size on fretting wear behavior of Inconel 690 alloy[J]. Heat Treatment of Metals, 2023, 48(1): 12-17.

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晶粒度对Inconel 690合金微动磨损行为的影响

Effect of grain size on fretting wear behavior of Inconel 690 alloy

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