EXPERIMENTAL INVESTIGATION AND TRIBOLOGICAL PROPERTIES OF METAL MATRIX MATERIAL USING WEAR TEST

Abstract

Aluminium Metal Matrix composites founds several applications in automobile, aerospace and other engineering application due to its mechanical and tribological properties. To improve wear resistance and mechanical properties has led to design and selection of newer variants of the composite.The present investigation deal with the study of wear behaviour of Al-Sic-mg MMCs for varying reinforcement content, applied load, sliding velocity. Aluminium MMCs reinforced with three different percentages of reinforcement 5, 10, 15% wt. Sic and 3% wt.mg prepared by stir casting method. Wear test was performed by using “pin on disk” apparatus. A plan of experiment based on L9 Taguchi orthogonal array is used to acquire the wear data. An analysis of variance is employed to investigate the influence of three controlling parameters, Sic content, Normal load, sliding velocity on dry sliding wear of the composites. It is observed that Sic content, sliding velocity and normal load significantly affect the dry sliding wear. The optimal combination of the three controlling parameters is also obtained for minimum wear.