第36卷第10期 北京科技大学学报 Vol.36 No.10 2014年10月 Journal of University of Science and Technology Beijing 0ct.2014 位移幅值对nconel600合金微动磨损性能和机制的 影响 李杰，陆永浩回 北京科技大学国家材料安全服役中心，北京100083 ☒通信作者，E-mail:lu_yonghao(@mater..usth.clu.cn 摘要采用高精度微动磨损试验机SRVV研究蒸汽发生器传热管材料Inconel600合金在不同位移幅值下的微动磨损行 为，分析了位移幅值对摩擦因数和磨损体积的影响.采用光学显微镜和扫描电子显微镜观察磨损表面和截面的形貌，并用透 射电子显微镜对摩擦学转变组织进行观察.结果表明：随位移幅值的增加，摩擦因数和磨损体积逐渐增大，材料的微动行为先 后经历以黏着为主的部分滑移区以及滑动为主的完全滑移区：磨损机制也由黏着磨损逐步转变为氧化磨损和剥层磨损的共 司作用：微裂纹出现在黏着区域和滑动区域的交界处以及滑动区域内：黏着区氧分布密度和磨痕外基体的相一致，氧化主要 发生滑动区域：磨痕亚表层的组织发生了严重的塑性变形，产生纳米化现象，摩擦学转变组织的晶粒尺寸约100m,远小于原 始组织的15-30μm. 关键词镍合金：微动磨损；位移幅值：微裂纹：纳米化 分类号TH117.1 Displacement amplitude effects on the fretting wear behavior and mechanism of Inconel600 alloys LI Jie,LU Yong-hao National Center for Materials Service Safety,University of Science and Technology Beijing.Beijing 100083,China Corresponding author,E-mail:lu_yonghao@mater.ustb.edu.cn ABSTRACT The fretting wear behavior of Inconel600 alloy for steam generator heat exchange tubes at different displacement ampli- tudes was investigated with a SRV IV fretting tester.The effects of displacement amplitude on the friction coefficient and wear volume were analyzed.The worn surface and subsurface morphology were observed by optical microscopy and scanning electron microscopy, and the tribological transformed structure was observed by transmission electron microscopy.It was found that the friction coefficient and wear volume increased with the displacement amplitude,and the fretting wear mode gradually transformed from mainly adhesion of the partial slip regime to absolutely slide of the gross slip regime.The wear mechanism correspondingly gradually changed from adhe- sive wear to a combination of oxidation and delamination wear.Microcracks were observed at the junction of the adhesion zone and the slide zone and in the whole slide zone of the wear scar.The oxygen distribution density in the adhesion area was almost the similar as the matrix located outside the wear scar,and oxidation mainly occurred in the sliding zone.Severe plastic deformation appeared just under the wear scar,resulting in its nanolization.The grain size in the tribological transformed structure layer was about 100nm,much smaller than 15 to 30 um of the original grain size. KEY WORDS nickel alloys;fretting wear:displacement amplitude:microcracks;nanolization 微动是指在机械振动、疲劳载荷、电磁振动或热 循环等交变载荷作用下，接触表面间发生的振幅极 收稿日期：2013-0706 基金项目：国家重点基础研究发展计划资助项目(2011CB610504) DOI:10.13374/j.issn1001-053x.2014.10.008:http://journals.ustb.edu.cn第 36 卷 第 10 期 2014 年 10 月 北京科技大学学报 Journal of University of Science and Technology Beijing Vol． 36 No． 10 Oct． 2014 位移 幅 值 对 Inconel600 合金微动磨损性能和机制的 影响 李 杰，陆永浩 北京科技大学国家材料安全服役中心，北京 100083  通信作者，E-mail: lu_yonghao@ mater． ustb． edu． cn 摘 要 采用高精度微动磨损试验机 SＲV Ⅳ研究蒸汽发生器传热管材料 Inconel600 合金在不同位移幅值下的微动磨损行 为，分析了位移幅值对摩擦因数和磨损体积的影响． 采用光学显微镜和扫描电子显微镜观察磨损表面和截面的形貌，并用透 射电子显微镜对摩擦学转变组织进行观察． 结果表明: 随位移幅值的增加，摩擦因数和磨损体积逐渐增大，材料的微动行为先 后经历以黏着为主的部分滑移区以及滑动为主的完全滑移区; 磨损机制也由黏着磨损逐步转变为氧化磨损和剥层磨损的共 同作用; 微裂纹出现在黏着区域和滑动区域的交界处以及滑动区域内; 黏着区氧分布密度和磨痕外基体的相一致，氧化主要 发生滑动区域; 磨痕亚表层的组织发生了严重的塑性变形，产生纳米化现象，摩擦学转变组织的晶粒尺寸约 100 nm，远小于原 始组织的 15 ～ 30 μm． 关键词 镍合金; 微动磨损; 位移幅值; 微裂纹; 纳米化 分类号 TH 117. 1 Displacement amplitude effects on the fretting wear behavior and mechanism of Inconel600 alloys LI Jie，LU Yong-hao National Center for Materials Service Safety，University of Science and Technology Beijing，Beijing 100083，China  Corresponding author，E-mail: lu_yonghao@ mater． ustb． edu． cn ABSTＲACT The fretting wear behavior of Inconel600 alloy for steam generator heat exchange tubes at different displacement ampli￾tudes was investigated with a SＲV IV fretting tester． The effects of displacement amplitude on the friction coefficient and wear volume were analyzed． The worn surface and subsurface morphology were observed by optical microscopy and scanning electron microscopy， and the tribological transformed structure was observed by transmission electron microscopy． It was found that the friction coefficient and wear volume increased with the displacement amplitude，and the fretting wear mode gradually transformed from mainly adhesion of the partial slip regime to absolutely slide of the gross slip regime． The wear mechanism correspondingly gradually changed from adhe￾sive wear to a combination of oxidation and delamination wear． Microcracks were observed at the junction of the adhesion zone and the slide zone and in the whole slide zone of the wear scar． The oxygen distribution density in the adhesion area was almost the similar as the matrix located outside the wear scar，and oxidation mainly occurred in the sliding zone． Severe plastic deformation appeared just under the wear scar，resulting in its nanolization． The grain size in the tribological transformed structure layer was about 100 nm，much smaller than 15 to 30 μm of the original grain size． KEY WOＲDS nickel alloys; fretting wear; displacement amplitude; microcracks; nanolization 收稿日期: 2013--07--06 基金项目: 国家重点基础研究发展计划资助项目( 2011CB610504) DOI: 10． 13374 /j． issn1001--053x． 2014． 10． 008; http: / /journals． ustb． edu． cn 微动是指在机械振动、疲劳载荷、电磁振动或热 循环等交变载荷作用下，接触表面间发生的振幅极