A comparative investigation between rolling contact fatigue and wear of high-speed and heavy-haul railway

作者：Zhong Wen^*; Dong Lin; Wang Yu; Zhu Wei Bing; Liu Qi Yue

来源：Tribology, 2012, 32(1): 96-101.

• Axle loads
• Failure behaviors
• Fatigue crack
• Heavy haul railway
• High-speed
• Railway rail
• Rolling contact fatigue
• Scanning electronic microscopy
• Surface cracks
• Surface fatigues
• Wear rates
• Wear scars
• Wear volume

Rolling contact fatigue (RCF) and wear are inevitable problems for the infrastructure of modern railway. The rolling tests of railway rail were performed using a JD-1wheel/rail simulation facility without any lubricant. The failure behavior of rail rollers with different axle load and speed was investigated in detail by examining wear volume and wear scar using optical microscopy and scanning electronic microscopy. The results indicate that the crack propagation was more significant and fatigue damage was more severe at high speed. The wear volume of rail roller became larger on heavy haul railway. The results show that there was a mutual competitive relationship between wear and surface fatigue crack. A high wear rate can reduce rolling contact fatigue damage by removing surface cracks.

• 出版日期2012
• 单位西南交通大学