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Early cluster formation during rapid cooling of an Al–Cu–Mg alloy: In situ small-angle X-ray scattering


Schloth, P; Menzel, A; Fife, J L; Wagner, J N; Van Swygenhoven, H; Drezet, J-M (2015). Early cluster formation during rapid cooling of an Al–Cu–Mg alloy: In situ small-angle X-ray scattering. Scripta Materialia, 108:56-59.

Abstract

The formation of Cu–Mg clusters in an Al–Cu–Mg aluminum alloy is observed by small-angle X-ray scattering during cooling. Cooling rates are choosen to mimic the different conditions obtained at the surface and in the center of large forgings. Clusters of 0.45 nm start to form at 250 °C. Their volume fraction depends strongly on the cooling rate and the amount of excess vacancies. The difference in cluster kinetics explains the difference in rapid hardening across large forgings.

Abstract

The formation of Cu–Mg clusters in an Al–Cu–Mg aluminum alloy is observed by small-angle X-ray scattering during cooling. Cooling rates are choosen to mimic the different conditions obtained at the surface and in the center of large forgings. Clusters of 0.45 nm start to form at 250 °C. Their volume fraction depends strongly on the cooling rate and the amount of excess vacancies. The difference in cluster kinetics explains the difference in rapid hardening across large forgings.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Biomedical Engineering
Dewey Decimal Classification:170 Ethics
610 Medicine & health
Language:English
Date:2015
Deposited On:09 Feb 2016 11:24
Last Modified:08 Dec 2017 17:59
Publisher:Elsevier
ISSN:1359-6462
Publisher DOI:https://doi.org/10.1016/j.scriptamat.2015.06.015

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