Relationship between Amount of Deformation by Forging and Mechanical Properties of Rapidly Solidified Powder Aluminum Alloy

Abstract

Effects of working conditions on mechanical properties of the heat resistant Al-9Fe-1.5V-1Zr powder forged or extruded alloy were investigated. The forging reduction ranged from 10 to 47% and the extrusion ratio was 25. The tensile strength and elongation increased with the reduction ratio. These dependency decreased in the case of elevated-temperature tension test. It was considered that the bonding strength between the powders due to the break-up of oxide film of the powder surface increased with the reduction ratio and that this effect of strengthening decreased with temperature due to the softening of matrix with temperature.