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Publications
Gregório, A., Sutherland, L.S., Silva, T., De Jesus, A. and Rosa, P. (2024), Study of the mechanical performance of aluminium 5083-H111 for a wide range of temperatures and loading rates, 4th World Conference on Advanced Materials for Defense Beyond Boundaries (AuxDefense 2024), 20-22 June, Braga, Portugal.
In this paper, the mechanical response of the aluminum alloy AA5083-H111 was assessed in conditions analogous to those found in military applications. Thermal sensitivity was evaluated from -70oC to 100oC and loading rate sensitivity was evaluated in order to account for the material energy absorption capabilities. These conditions ranged from quasi-static deformation to severe impact (strain-rates up to 2000s-1). Experiments were carried out to very high strains (over 1) by means of uniaxial compression tests conducted on a custom split-Hopkinson pressure bar (SHPB). Results show that AA5083-H111 maintains its mechanical strength almost entirely over the tested range of temperatures for quasi-static deformation. They also show that its performance under impact is not compromised at lower temperatures, from -70ºC to 25ºC, but is hindered when operating temperatures exceed 50oC.
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