Title: The effect of ECAP and Cu addition on the ageing response and grain substructure evolution in an Al-4.4wt%Mg alloy
Authors: Radetic, Tamara ×
Popovic, Miljana
Romhanji, Endre
Verlinden, Bert #
Issue Date: Jan-2010
Publisher: Elsevier Sequoia
Series Title: Materials Science and Engineering A, Structural Materials: Properties, Microstructure and Processing vol:527 issue:3 pages:634-644
Abstract: The effect of ECAP conducted at 200 degrees C on the grain substructure evolution in an AA5182 alloy and the same alloy with 1.2 wt.% Cu addition was investigated. Severe plastic deformation was found to accelerate the precipitation kinetics in the AA5182 + Cu alloy, leading to the formation of a fine dispersion of the stable S phase precipitates. These particles homogenized slip, causing a delay of the band/cell substructure formation in the AA5182 + Cu alloy compared to the AA5182 alloy processed in the same manner. Aside from the conventional particle hardening effect, the precipitates also play a role in retarding the recovery and recrystallization processes, retaining the effects of strain in the material after ECAP at elevated temperature. (c) 2009 Elsevier B.V. All rights reserved.
ISSN: 0921-5093
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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