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Journal of Materials Science
Erschienen in: Journal of Materials Science 19/2014

01.10.2014 | Ultrafinegrained Materials

Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity

verfasst von: Ali Alhamidi, Zenji Horita

Erschienen in: Journal of Materials Science | Ausgabe 19/2014

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Abstract

An Al-6 %Cu-0.4 %Zr alloy was processed by high-pressure torsion to produce an ultrafine-grained structure with a grain size of ~200 nm at the steady-state level where the hardness remains constant with straining. Tensile testing showed that a maximum elongation of ~530 % was attained at 673 K with an initial strain rate of 1 × 10−3 s−1. Evaluation of the strain-rate sensitivity and the activation energy for the deformation confirmed that grain boundary sliding through grain boundary diffusion is the rate-controlling process for the superplastic deformation.
Vorheriger Artikel Mg segregations at and near deformation-distorted grain boundaries in ultrafine-grained Al–Mg alloys
Nächster Artikel Absorbents based on maleic anhydride-modified cellulose fibers/diatomite for dye removal

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Metadaten
Titel
Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity
verfasst von
Ali Alhamidi
Zenji Horita
Publikationsdatum
01.10.2014
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 19/2014
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-014-8362-5

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