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

作     者：L.M.Du L.W.Lan S.Zhu H.J.Yang X.H.Shi P.K.Liaw J.W.Qiao 

作者机构：Research Center for High-Entropy Alloys College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 China National Key Laboratory for Remanufacturing Academy of Armored Forces Engineering Beijing 100072 China Department of Materials Science and Engineering The University of Tennessee Knoxville TN 37996-2200 USA 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2019年第35卷第5期

页      面：917-925页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the opening project from National Key Laboratory for Remanufacturing (No. 61420050204) the Department of Energy (DOE), Office of Fossil Energy, National Energy Technology Laboratory (DE-FE-0011194), with Mr. V. Cedro, Mr. R. Dunst, and Dr. J. Mullen as program managers the support of the U.S. Army Research Office project (W911NF-13-1-0438) with the program manager, Dr. M. P. Bakas and Dr. D. M. Stepp support from the National Science Foundation (DMR-1611180) with the program directors, Dr. G. J. Shiflet and D. Farkas 

主　　题：Abrasive wear Friction and wear characteristics Hardness High temperature Microstructure Oxidation Rapid solidification Sliding Wear mechanism 

摘      要：The tribological behavior of Al0.25 CoCrFeNi high-entropy alloy(HEA) sliding against Si3N4 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°.