Dry rolling-sliding wear behavior of ER9 wheel and R260 rail couple under different operating conditions

被引：8
|
作者：
Tosangthum, N. [1 ]
Krataitong, R. [1 ]
Wila, P. [1 ]
Koiprasert, H. [3 ]
Buncham, K. [2 ]
Kansuwan, P. [4 ]
Manonukul, A. [2 ]
Sheppard, P. [3 ]
机构：
[1] Natl Met & Mat Technol Ctr, Particulate Mat Proc Technol Res Team, Mat Proc & Mfg Automat Res Grp, 114 Paholyothin Rd, Khlong Nueng, Pathum Thani, Thailand
[2] Natl Met & Mat Technol Ctr, Smart Alloys & Mfg Res Team, Mat Proc & Mfg Automat Res Grp, 114 Paholyothin Rd, Khlong Nueng, Pathum Thani, Thailand
[3] Natl Sci & Technol Dev Agcy, Rail & Modern Transports Technol Res Ctr, 111 Paholyothin Rd, Klong 1, Klongluang, Pathumthani, Thailand
[4] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Dept Mech Engn, Bangkok, Thailand
来源：
WEAR | 2023年 / 518卷
关键词：
Rolling contact fatigue; Plastic deformation; Fatigue cracking; Wheel; rail materials; FATIGUE-CRACK GROWTH; CONTACT FATIGUE; SLIP RATIO; MECHANICAL-PROPERTIES; PEARLITIC STEELS; RESISTANCE; BAINITE; MODEL; PREDICTION; EVOLUTION;
D O I：
10.1016/j.wear.2023.204636
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This work aimed to evaluate the effects of contact stress and slip ratio on wear and rolling contact fatigue of ER9 wheel steel and R260 rail steel couple under unlubricated conditions using a dual disk test. It was demonstrated that as either contact stress or slip ratio increased, so did the wear rate and surface damage of both ER9 wheels and R260 rail rollers. The wear rate of the ER9 wheel steel containing proeutectoid ferrite and the smaller structure size of pearlite increased significantly when compared to the rail steel containing fully pearlite in each pair. After testing according to the conditions used in this work, the surface hardness of the pearlitic rail steel was higher than that of the ferrite-pearlite wheel steel. The average hardening ratio of ER9 wheel steel and R260 rail steel was 0.7 and 1.28, respectively. This was consistent with the subsurface deformation angle. With full pearlite in the microstructure of rail steel, the main wear mechanism was predominantly caused by fatigue cracking and peeling, with some adhesive wear. Whereas the most prominent mechanism of the ferrite-pearlite wheel steel was adhesive wear, which was followed by spalling and small fatigue cracks.
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页数：14
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