Abstract
In the present scenario there is an immense need for highly designated material with better mechanical and physical properties for a variety of engineering applications. This article discusses a well-known severe plastic deformation process called equal channel angular pressing (ECAP), which was conducted on Aluminium alloy AA7068 at elevated temperature 220°C with repetitive ECAP cycles using route A, up to four passes in order to improve the mechanical properties of the material by producing ultrafine grained (UFG) microstructure. The microstructure of homogenized and ECAP processed samples were analyzed using optical microscope and mechanical properties were examined through tensile and microhardness tests. Investigation results showed an improvement in tensile strength and hardness of ECAP processed samples with a considerable amount of grain refinement up to 15 µm after four ECAP passes as compared with unprocessed samples.
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