Artículo

Vacancy-solute interactions during multiple-step ageing of an Al-Cu-Mg-Ag alloy

Ferragut, Rafael OmarIcon ; Dupasquier, A.; Macchi, Carlos EugenioIcon ; Somoza, Alberto HoracioIcon ; Lumley, R. N.; Polmear, I. J.
Fecha de publicación: 02/2009
Editorial: Pergamon-Elsevier Science Ltd
Revista: Scripta Materialia
ISSN: 1359-6462
Idioma: Inglés
Tipo de recurso: Artículo publicado

Resumen

Small additions of Ag and Mg stimulate nucleation of the Ω phase in artificially aged Al-Cu alloys, after which these elements segregate to the Ω/matrix interfaces. In this work, positron spectroscopy results show that vacancies accompany the Ag (and Mg) atoms at the interface during precipitate formation, after which they are released back into the matrix and facilitate secondary ageing at ambient temperature.
Palabras clave: ALUMINIUM ALLOYS , HARDNESS , PHASE TRANSFORMATION KINETICS , POSITRON ANNIHILATION , VACANCY-SOLUTE COMPLEXES
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/114874
DOI: https://doi.org/10.1016/j.scriptamat.2008.09.011
URL: https://www.sciencedirect.com/science/article/abs/pii/S1359646208006726
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Articulos(CCT - TANDIL)
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Citación
Ferragut, Rafael Omar; Dupasquier, A.; Macchi, Carlos Eugenio; Somoza, Alberto Horacio; Lumley, R. N.; et al.; Vacancy-solute interactions during multiple-step ageing of an Al-Cu-Mg-Ag alloy; Pergamon-Elsevier Science Ltd; Scripta Materialia; 60; 3; 2-2009; 137-140
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