Present work encapsulated the friction and wear behaviour of aluminium matrix composites reinforced with different mass fractions of titanium diboride(TiB_(2))particles,synthesized by stir casting.A pin on disc tribot...Present work encapsulated the friction and wear behaviour of aluminium matrix composites reinforced with different mass fractions of titanium diboride(TiB_(2))particles,synthesized by stir casting.A pin on disc tribotester was employed for conducting the dry sliding wear tests of Al2024−TiB_(2)composites.The tests were performed adopting various parameters like load,sliding distance and sliding velocity for investigating the effect of tribological parameters on the prepared composites.Microstructural characterization confirmed uniform dispersion of TiB_(2)particles and good matrix−reinforcement bonding.Results of the experiments revealed that,low friction and wear rates were observed in the developed composites compared to Al2024 alloy,whereas wear rates of both Al2024 alloy and fabricated composites increased with the increase in load,sliding velocity and sliding distance.However,friction coefficient of both Al2024 alloy and fabricated composites reduced with the increase in applied load but rose with the increase in sliding velocity and sliding distance.SEM studies of the worn surfaces and debris depicted that enhancement in wear resistance can be ascribed to finer debris formation.展开更多
Al2024/SiC functionally graded materials (FGMs) with different numbers of graded layers and different amounts of SiC were fabricated successfully by powder metallurgy method and hot pressing process. The effects of in...Al2024/SiC functionally graded materials (FGMs) with different numbers of graded layers and different amounts of SiC were fabricated successfully by powder metallurgy method and hot pressing process. The effects of increasing SiC content and number of layers of Al2024/SiC FGMs on the microstructure and mechanical properties of the composite were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) analyses indicated that Al and SiC were dominant components as well as others such as Al4C3, CuAl2, and CuMgAl2展开更多
文摘Present work encapsulated the friction and wear behaviour of aluminium matrix composites reinforced with different mass fractions of titanium diboride(TiB_(2))particles,synthesized by stir casting.A pin on disc tribotester was employed for conducting the dry sliding wear tests of Al2024−TiB_(2)composites.The tests were performed adopting various parameters like load,sliding distance and sliding velocity for investigating the effect of tribological parameters on the prepared composites.Microstructural characterization confirmed uniform dispersion of TiB_(2)particles and good matrix−reinforcement bonding.Results of the experiments revealed that,low friction and wear rates were observed in the developed composites compared to Al2024 alloy,whereas wear rates of both Al2024 alloy and fabricated composites increased with the increase in load,sliding velocity and sliding distance.However,friction coefficient of both Al2024 alloy and fabricated composites reduced with the increase in applied load but rose with the increase in sliding velocity and sliding distance.SEM studies of the worn surfaces and debris depicted that enhancement in wear resistance can be ascribed to finer debris formation.
文摘Al2024/SiC functionally graded materials (FGMs) with different numbers of graded layers and different amounts of SiC were fabricated successfully by powder metallurgy method and hot pressing process. The effects of increasing SiC content and number of layers of Al2024/SiC FGMs on the microstructure and mechanical properties of the composite were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) analyses indicated that Al and SiC were dominant components as well as others such as Al4C3, CuAl2, and CuMgAl2
