Effect of Displacement Amplitude on Fretting Wear Behavior of Copper - Magnesium Alloy

被引：0
|
作者：
Yuan X. [1 ]
Li G. [1 ,2 ]
Zhang X. [1 ]
Pu J. [1 ]
Ren P. [1 ]
机构：
[1] Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University, Chengdu
[2] Gas transmission management office of Petro China Southwest Oil & Gasfield Company, Chengdu
来源：
Zhang, Xiaoyu (zhangyu3035@126.com) | 1600年 / Science Press卷 / 41期
基金：
中国国家自然科学基金;
关键词：
Cu-Mg alloy; Displacement amplitude; Fatigue delamination; Fretting wear; Plastic deformation;
D O I：
10.16078/j.tribology.2020064
中图分类号：
学科分类号：
摘要：
The effect of displacement amplitude on fretting wear behavior of copper-magnesium alloy was investigated. Fretting tests of Cu-Mg alloy were carried out on a multi-function fretting wear rig under different displacement amplitudes. The friction coefficient curve and Ft-D-N curve were recorded during the fretting process, and the damage area was analyzed by optical microscope, scanning electron microscope, energy dispersive X-ray spectrometer and three-dimensional profiler. The results showed that with the increase of displacement amplitude, the fretting contact condition changed from the partial slip regime to the gross slip regime, and the mixed slip state was not found. There was a transformation from the elastic deformation coordination to the plastic deformation coordination in the partial slip regime. The wear volume increased with the increase of displacement amplitude, in addition, the volume loss was very serious in the gross slip regime. In the partial slip state coordinated by elastic deformation, the damage of the contact surface was mild; while in the partial slip state coordinated by plastic deformation, high shear stress was produced in the contact area, and fatigue cracks extended to the contact surface resulting in peeling of material, with traces of abrasive and oxidative wear at the contact edge. In the gross slip regime, the contact surface damage mainly were fatigue delamination, abrasive wear and oxidation wear. Copyright ©2021 Tribology. All rights reserved.
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页码：125 / 136
页数：11
相关论文
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