Effects of temperature on the tribological behavior of Al0.25CoCrFeNi high-entropy alloy

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2019,（5）
• 页码范围: 917-925
• 页数: 9页
• 语种: 英文

摘要

The tribological behavior of Al0.25CoCrFeNi high-entropy alloy (HEA) sliding against Si3 N4 ball was investigated from room temperature to 600 °.The microstructure of the alloys was characterized by simple FCC phase with 260 HV.Below 300 °,with increasing temperature,the wear rate increased due to high temperature softening.The wear rate remained stabilized above 300 ° due to the anti-wear effect of the oxidation film on the contact interface.The dominant wear mechanism of HEA changed from abrasive wear at room temperature to delamination wear at 200 °,then delamination wear and oxidative wear at 300 ° and became oxidative above 300 °.Moreover,the adhesive wear existed concomitantly below 300 °.