Abstract
In this paper the effect of Equal Channel Angular Pressing (ECAP) on microstructures, mechanical properties of Cu-7wt.% Al alloy has been investigated. After ECAP process the tensile yield strength, ultimate tensile strength, and microhardness of the sample are increased than before ECAP. With Cu-Al alloy with very low SFE, material being a shear fracture (SF) occurred during ECAP due to the formation of macroscopic shear bands. The tensile test at room temperature shows that the strength increases with an increase in the number of passes, but the elongation to failure remains little changed following a large decrease after the first pass and reasonably constant after increasing the passes. This study shows that SPD has the potential to significantly improve the mechanical properties of annealed Cu-Al alloys.
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