Influence of tungsten disulfide particles (WS2) on the friction and wear behavior of Mg-AZ91 forms the objective of this work. Friction stir processing (FSP) has been used to fabricate FSP AZ91/WS2 composite with various FSP passess. The microstructures were studied using a scanning optical microscope (OM), Electron Backscatter Diffraction (EBSD), and electron microscope (SEM). Hardness is measured using Vickers's microhardness tester. The impact of WS2 on the friction and wear resistance of Mg-AZ91 were evaluated using a pin on disc apparatus under dry sliding conditions. The microstructure showed the grain refinement of FSP AZ91/WS2 composite, due to severe plastic deformation and dynamic recrystallization. An increase in the FSP passess has transformed the grain size from micron to nano level. The hardness of FSP AZ91/WS2 composite is increased to 122 HV, from 62.2 HV0.3 of Mg-AZ91. The improvement in the hardness is due to reinforcement of WS2 and grain refinement. A significant improvement in the friction and wear resistance was achieved for Mg-AZ91 composites in contrast to FSP AZ91 and AZ91. SEM micro images showed the transfer of wear mechanism from severe adhesive wear to mild adhesive wear.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.