An analysis of the surface quality of AA5182 at different testing temperatures

Schneider, R, Grant, Richard J, Heine, B, Borret, R, Burger, S and Zouaoui, Zoubir (2014) An analysis of the surface quality of AA5182 at different testing temperatures. Materials and Design, 64. pp. 750-754. ISSN 0261-3069

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The mechanical behaviour of the commercial aluminium alloys EN AW-5182, EN AW-6016 and EN AW-7021 is investigated at temperatures ranging from 298 to 77 K and strain rates from 1.7 × 10__ to 6.6 × 10_ s-1. A device which allows testing at cryogenic temperatures is developed and demonstrated, where the specimens are subject to uniaxial tensile loads. The influence of a solution heat treatment for precipitation hardenable alloys is shown. The strain hardening coefficient is determined and mapped in terms of the experimentally investigated uniform elongation. The experimental data of tested aluminium alloys are compared with EN AW-1050A-H14, which is used as a reference. The effect of the Portevin-LeChatelier (PLC) effect on ductility and strength is discussed. The Ludwik relationship is adapted to describe materials showing a PLC-effect.

Item Type: Article
Keywords: Aluminium alloy, PortevinLe-Chatelier effect, serrated flow, surface quality, power spectral density
Divisions: Applied Science, Computing and Engineering
Depositing User: Mr Stewart Milne
Date Deposited: 12 Mar 2015 16:34
Last Modified: 19 Dec 2017 15:22

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