Investigation on Wear Resistance and Fatigue Damage of Laser Cladding Coating on Wheel and Rail Materials under the Oil Lubrication Condition

作者：W.-J. Wang, Zhengwei Fu, Junlong Guo, Yuqiao Zhang, Qiang Liu, Minhao Zhu · 发表于：Tribology Transactions · 年份：2016 · DOI：10.1080/10402004.2015.1107926 · 被引用次数：31 · 研究领域：Metal Alloys Wear and Properties、High Entropy Alloys Studies、Surface Treatment and Coatings

The aim of this study is to investigate the wear resistance and fatigue spalling damage of wheel and rail materials with and without laser cladding coating under oil lubrication using a rolling–sliding machine. It illustrates that the laser cladding Co-based alloy coating improves the wear resistance of wheel and rail rollers. Serious spalling is dominant for untreated wheel and rail rollers. The wheel or rail roller undergoing laser cladding treatment takes on slight abrasive wear and visible ploughing. Furthermore, there are no cracks on the contact surface and subsurface. The laser cladding Co-based alloy coating exhibits outstanding resistance to wear and fatigue spalling damage due to its microstructure in the coating under oil lubrication.