A Review on Mechanical and Tribological Behaviors of Stir Cast Aluminum Matrix Composites.

Abstract

In the past few years the global need for low cost, high performance and good quality materials has caused a shift in research from monolithic to composite materials. In case of MMC's, aluminum matrix composite due their high strength to weight ratio, low cost and high wear resistance are widely manufactured and used in structural applications along with aerospace and automobile industry. Also a simple and cost effective method for manufacturing of the composites is very essential for expanding their application. Reinforcements like particulate alumina, silicon carbide, graphite, fly ash etc can easily be incorporated in the melt using cheap and widely available stir casting method. This paper presents a review on the mechanical and tribological properties of stir cast aluminum matrix composites containing single and multiple reinforcement. Addition of alumina to aluminum has shown an increase in its mechanical and tribological properties. Organic reinforcement like fly ash, coconut ash also improved the tensile and yield strength. Self-lubricating property of graphite improved the machinability of aluminum. Many authors have also reported about modified stir casting route.

Comparative analysis of wear behavior of garnet and fly ash reinforced Al7075 hybrid composite

“…This change in velocity developed inertia force and increased thrust force and shear force which led to increase in specific wear rate. Increase in wear rate with increase in sliding velocity was in agreement with Chowdhury [18,19].…”

The Effects of B4C Amount on Hardness and Wear Behaviours of 7075-B4C Composites Produced by Powder Metallurgy Method

“…Especially due to their excellent wear and corrosion resistance, they are widely used in automotive and aerospace industry [1][2][3][4]. Al alloys are widely used in metal matrix composite production as matrix material due to their low density and high corrosion resistance [1,5,6]. Among these alloys, especially the 2XXX, 6XXX, 7XXX Al alloys are preferred for their ageing properties.…”

Wear and Corrosion Behavior of Al–Si Matrix Composite Reinforced with Alumina

“…This is a possible mechanism for the formation of the spinel reaction product in the melt. [23][24][25]. In Fig.…”