Self-healing of deformation damage in underaged Al-Cu-Mg alloys

Hautakangas, S. and Schut, H. and van Dijk, N. H. and Rivera Díaz del Castillo, P. E.J. and van der Zwaag, S. (2008) Self-healing of deformation damage in underaged Al-Cu-Mg alloys. Scripta Materialia, 58 (9). pp. 719-722. ISSN 1359-6462

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Abstract

The generation and evolution of open volume defects in underaged and T3 Al-Cu-Mg alloy is studied with positron annihilation spectroscopy. During room temperature ageing the positron lifetime in plastically deformed, underaged material approaches the saturation lifetime of the undeformed material. Doppler-broadening results indicate that this behaviour can be attributed to diffusion and clustering of retained solute Cu atoms at the deformation defects, a process of relevance for the introduction of a self-healing mechanism in age-hardenable aluminium alloys.

Item Type:
Journal Article
Journal or Publication Title:
Scripta Materialia
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
125484
Deposited By:
Deposited On:
24 May 2018 13:42
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Jul 2020 04:12