Effect of Sliding Speed on Wear Property of Al2O3-SiO2(sf) / AZ91D Composite
AZ91D alloy matrix composites(MMCs) with volume fraction of 15%, 20%, 25% and 30% were prepared with the preform made of crystallized aluminum silicate short fibers as reinforcement and aluminum phosphate as binder by squeezing casting at high temperature. Dry sliding wear properties of the composites were tested by means of MM200 wear tester (block-on-ring configuration) against a hardened alloy steel counterface with hardness of 53HRC under loads of 10N, 20N, 30N, 40N and 50N and sliding speed of 0.47m/s and 0.92 m/ s, and wear morphology of the specimens was observed by SEM (scanning electron microscope). The results reveal that effects of sliding speed on wear rate of the composites are greater and more complex than on those of the AZ91D matrix alloy, which is closely related to not only volume fraction in the composites but also applied loads.
G. J. Liu et al., "Effect of Sliding Speed on Wear Property of Al2O3-SiO2(sf) / AZ91D Composite", Advanced Materials Research, Vols. 217-218, pp. 893-896, 2011