Statistical Analysis of Statistical Analysis of Statistical Analysis of Hardness and Wear Behaviour of Friction Stir Processed Cast Al-Si Alloy

Document Type : Research articles

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Mechanical Engineering Department , Shoubra Faculty of Engineering ,Benha University ,Cairo ,Egypt.

Abstract

In this paper, statistical investigation was used to determine the influence of friction stir processing (FSP) variables such as tool pin profile, tool rotational speed and traverse speed on some mechanical properties of A356 cast aluminum alloy. Specimens were treated by FSP to produce refined microstructure locally. It has been found that the most significant variable affecting wear resistance and hardness is the rotational speed, whereas the tool traverse speed has a second ranking. The pin profile tool geometry has no statistical important influence on hardness and wear rate. The quadratic regression model was used to predict the hardness and wear rate of FS processed A356 alloy.

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