Thermal-induced surface damage of M50 steel at rolling-sliding contacts

被引:26
作者
Zhang, Chuanwei [1 ]
Peng, Bo [2 ]
Wang, Liqin [1 ]
Ma, Xinxin [1 ]
Gu, Le [1 ]
机构
[1] Harbin Inst Technol, MIIT Key Lab Aerosp Bearing Technol & Equipment, Harbin 150001, Heilongjiang, Peoples R China
[2] China Acad Launch Vehicle Technol, R&D Ctr, Beijing 100076, Peoples R China
基金
中国国家自然科学基金;
关键词
M50; steel; Scuffing; Thermal softening; Plastic deformation; SCUFFING INITIATION; BEARING STEEL; FRICTION; LUBRICATION; PERFORMANCE; BEHAVIOR; FATIGUE;
D O I
10.1016/j.wear.2018.12.091
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The thermal-induced surface damage of M50 steel at rolling-sliding contacts under heavy load and high speed is investigated. A two-disk test rig is used for testing the surface damage of M50 steel at scuffing. The thermal response and near-surface deformation of M50 steel at rolling-sliding contacts are analyzed based on its high-temperature properties. The results show that the surface damage of M50 steel at rolling-sliding contacts is basically caused by thermal softening of near-surface material, which is generated by the heat of both the friction and plastic deformation. A high temperature due to the frictional heat at rolling-sliding contacts first reduces the yield strength of M50 steel. A large plastic deformation of near-surface material is therefore generated, which, in turn, causes a large temperature rise. Scuffing occurs at a quick increase in thermal softening of M50 steel.
引用
收藏
页码:116 / 122
页数:7
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