Abstract
Metal foams have become a prominent research material in the past decade due to their low specific gravity and high energy absorption capacity. Recently a new method of metal foam formation using “Friction Stir Processing”(FSP) as the starting process has been developed. A mixture of blowing agent powder (TiH2) and stabilization agent powder (Al2O3) is used to form a composite through FSP. This composite on heat treatment converts into a porous aluminum or aluminum metal foam, due to the evolution of Hydrogen gas from the blowing agent. This method if developed properly may lead to the cost effective technique of the aluminum metal foam formation. In this study, closed cell aluminum 6063 metal foam has been developed by using FSP. The porosity of around 60% was obtained. An attempt has been made to analyze the process critically by using various characterization techniques such as SEM and EDS.
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