Effect of Copper Additions on The Properties of Recycled Pure Aluminum Chips

Document Type : Original Article

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Department of Production Engineering and Mechanical Design, Port Said University, port said, Egypt.

Abstract

The effect of copper addition for recycled pure aluminum chips on microstructure, mechanical properties, and wear behavior has been investigated. The wear behavior was carried out at various applied loads, wearing times, and revolution of specimens, with the process responses being the obtainable microstructure, tension test, hardness, wear loss, and electrical conductivity. The results showed that increasing the copper content by up to 6 wt.% increased the number of grain boundaries and their constituents. Furthermore, large agglomerates have formed in some areas, most notably in the 10 wt.% Cu sample. In addition, 8 wt.% Cu sample exhibits optimal behavior, as its uniform dispersion aids in enhancing the mechanical and tribological characteristics of Al-Cu alloys. The minimum and maximum ultimate tensile stress values were obtained with recycled pure aluminum chips and an 8 wt.% Cu addition. The minimum wear value was 0.012 gm at a spindle speed of 90 rpm and copper percentage of 10 wt.%. The maximum wear value was 70.8 gm at a spindle speed of 350 rpm and a copper percentage of 0 wt.%.

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