Tribological behavior of friction stir processed SiP/ZA40 in-situ composites

作     者：F.RAJABI R.TAGHIABADI M.H.SHAERI F.RAJABI;R.TAGHIABADI;M.H.SHAERI

作者机构：Department of Materials Science and MetallurgyImam Khomeini International University(IKIU)QazvinIran 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2020年第30卷第11期

页      面：3043-3057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）] 080502[工学-材料学] 

主　　题：Zn−40Al−2Cu alloy silicon composite tribology friction stir processing 

摘      要：The effect of friction stir processing(FSP)at different rotation speeds(400,630,800,and 1000 r/min)and traverse speeds(25 and 50 mm/min)on the tribological properties of a Si particle reinforced Zn−40Al−2Cu-based in-situ composite was *** preliminary optimization,800 r/min and 25 mm/min were selected as optimum FSP *** to the results,multi-pass FSP improved the tribological *** instance,at an applied pressure of 0.75 MPa,the wear rate and average coefficient of friction(COF)of four-pass FSPed composite were lower than those of base composite by 53%and 50%,*** examinations of worn surfaces,wear debris,and worn subsurfaces revealed that the intensive refinement and uniform distribution of microstructural phases,especially the coarse Si particles,reduced Si particles interspacing,and elimination of casting defects were the most important factors enhancing the substrate resistance against sliding-induced *** led to the formation of stable tribolayers that improved the tribological properties.