Effect of rolling direction and groove geometry on impact behaviour of AA6061 and AA 7020 aluminum alloys

مهندسی متالورژی و مواد

Volume 35, Issue 1 - Serial Number 33, April 2024, Pages 35-50   

Document Type: Original Articles

DOI: 10.22067/jmme.2024.84343.1124

Author

Farzad Soleymani^*

Faculty member of Payam Noor University. Tehran - Iran.

Abstract

Impact behavior of cold rolled AA6061 and AA 7020 aluminum alloys were investigated by Charpy impact test. Four longitudinal and long transverse and short transverse (in two groove positions) were studied. The groove angles were 30, 45, 60 and 90 degrees and temperatures tests were dry ice, zero degrees, ambient and boiling water temperatures. Two samples of each variable were taken to ensure the distribution range. Also for strengthening of aluminum alloys T65 precipitation hardening heat treatment was used. The results showed that increasing temperature increased the amount of impact energy and impact energy value decreased with increasing groove angle and failure mode altered from shear to flat and a mixture of both. Samples had the minimum amount of impact energy in the rolling longitudinal direction and the maximum amount of impact energy in the short transverse direction.

About 85% of consumed aluminum are processed products such as cold rolled plates, which use casting ingots as a raw material and turn into the final product with subsequent processes, and during these processes, the microstructure also changes.

Keywords: Impact energy, groove direction, shear failure, aluminum alloy

Keywords

Impact energy; groove direction; shear failure; aluminum alloy

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