63Cu NMR investigation of effect of small additions of Sn to Al-1.7 at.%Cu in promoting accelerated phase transformations on aging

Bastow, T.J., Bourgeois, L. and Forsyth, M. 2005, 63Cu NMR investigation of effect of small additions of Sn to Al-1.7 at.%Cu in promoting accelerated phase transformations on aging, Philosophical magazine, vol. 85, no. 24, pp. 2757-2766.

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Title 63Cu NMR investigation of effect of small additions of Sn to Al-1.7 at.%Cu in promoting accelerated phase transformations on aging
Author(s) Bastow, T.J.
Bourgeois, L.
Forsyth, M.
Journal name Philosophical magazine
Volume number 85
Issue number 24
Start page 2757
End page 2766
Publisher Taylor & Francis Ltd.
Place of publication London, England
Publication date 2005-08
ISSN 1478-6443
1478-6435
Summary Very recently 63Cu NMR has been shown to be extremely sensitive in detecting and differentiating between the precipitate phases that form in Al-Cu alloys during heat treatment. This technique is now used to quantify the effectiveness of small additions of Sn to the alloy Al-1.7 at.% Cu in promoting the rapid nucleation and growth of the θ'-phase precipitate. Two parallel series of 63Cu NMR spectra were recorded for Al-1.7 at.% Cu and Al-1.7 at.% Cu-0.01 at.% Sn: (i) aged at 130° C to observe the comparative rate of phase evolution and (ii) aged at 200° C to observe the rate of growth of θ'-phase and to compare with the Vickers hardness of the alloys aged at 200° C for similar periods. Evidence is presented that a metastable precursor phase to θ' (labelled TPHM2757math001) is formed in Al-Cu-Sn which transforms to θ' on further aging.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2005, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030056

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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