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Evolution of mechanical properties in a 7075 Al-alloy subject to natural ageing

Leacock, AG, howe, C, Brown, D, Lademo, O and Deering, A (2013) Evolution of mechanical properties in a 7075 Al-alloy subject to natural ageing. Materials and Design, 49 . pp. 160-167. [Journal article]

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DOI: http://dx.doi.org/10.1016/j.matdes.2013.02.023

Abstract

A series of mechanical tests was used to characterise the evolution of yield strengths, r-values and work hardening during the natural ageing of a commercial 7075 aluminium alloy. The results show that there is a significant underlying change in anisotropy between the original O-condition and solution heat treated tempers. In the absence of recrystallisation, the abrupt change in anisotropy appears to have been caused by the modification of the precipitate during the solution heat treatment. The degree of induced anisotropy remained constant throughout the natural ageing process from 15 to 120 min. A series of phenomenological functions is presented for the purpose of interpolation between the original test data points. These empirical functions are shown to predict the yield behaviour of the naturally aged material within the observed experimental scatter.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Advanced Metal Forming
ID Code:25211
Deposited By: Dr Alan Leacock
Deposited On:11 Mar 2013 11:43
Last Modified:11 Mar 2013 11:43

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