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Efecto de tratamiento isotermico sobre los cambios de fases de una aleación AA8011

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Author(s): Ver nica Gonz lez | Ram n L pez | Ney Luiggi

Journal: Revista Mexicana de Física
ISSN 0035-001X

Volume: 52;
Issue: 3;
Start page: 147;
Date: 2006;
Original page

ABSTRACT
In this work we have detected the isothermal phase transformations occurring in an AA8011 alloy which was homogenized by 24 hours at 600±C. A non isothermal heating at 10±C/min between 20 and 600±C permitted us to determine, by means of differential scanning calorimetry (DSC), the characteristic temperatures of the structural transformations, which are identified at 271.8, 450 and 474.2±C. Isothermal kinetics in situ at these temperatures reveal that heat flux changes which are associated with process of precipitation and dilution of structural phases.
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