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Phase equilibria and solidification of Mg-rich Al-Mg-Si alloys

Valdés, Rocio and Freulon, Alexandre and Deschamps, Jean-Baptiste and Qian, Ma and Lacaze, Jacques Phase equilibria and solidification of Mg-rich Al-Mg-Si alloys. (2006) Materials Science Forum, Vol. 508 . pp. 621-628. ISSN 1662-9752

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.508.621

Abstract

The solidification and solid-state phase equilibria of four Al-Mg-Si alloys containing 30-70%Mg and 0.5-3.5%Si, selected on the basis of an isothermal section of the Al-Mg-Si system calculated at 300 °C, have been investigated. Solidification paths of Mg-rich Al-Mg-Si alloys finish on ternary eutectics and the temperatures of two of these eutectic reactions, i.e. L↔(Al)+β+ Mg2Si and L↔(Mg)+γ+ Mg2Si, have been determined to be at ~ 448 °C and ~ 436 °C respectively by DTA. The characteristic temperatures recorded on the DTA curves are analysed and a linear relationship is found between the peak temperature and the square root of the scanning rate.

Item Type:Article
Additional Information:Thanks to Trans Tech Publication editor. The definitive version is available at http://www.scientific.net/ The original PDF of the article can be found at Materials Science Forum website : http://www.scientific.net/MSF
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Brunel University (UNITED KINGDOM)
Laboratory name:
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Deposited By:Cedric ARNAL

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