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Journal of Materials Science
Erschienen in: Journal of Materials Science 12/2015

01.06.2015 | Original Paper

An evaluation of the saturation hardness in an ultrafine-grained aluminum 7075 alloy processed using different techniques

verfasst von: Shima Sabbaghianrad, Terence G. Langdon

Erschienen in: Journal of Materials Science | Ausgabe 12/2015

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Abstract

A commercial Al-7075 alloy was processed by the severe plastic deformation (SPD) procedures of equal-channel angular pressing (ECAP) and high-pressure torsion (HPT) and by a combination of these two techniques. The results show samples processed by a combination of ECAP and HPT have smaller grain sizes and higher saturation hardnesses than samples processed separately by ECAP or HPT. Microstructural observations reveal grain refinement after each SPD technique, and the minimum grain size was ~200 nm after processing by a combination of ECAP for eight passes and HPT for 20 turns. It is demonstrated that the saturation hardness is dependent upon the microstructure of the sample introduced in any processing step prior to the HPT processing.
Vorheriger Artikel Structural phase transformations in radiolytically synthesized Al–Cu bimetallic nanoparticles
Nächster Artikel Formation of GeSn layers on Si (001) substrates at high growth temperature and high deposition rate by sputter epitaxy method

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Metadaten
Titel
An evaluation of the saturation hardness in an ultrafine-grained aluminum 7075 alloy processed using different techniques
verfasst von
Shima Sabbaghianrad
Terence G. Langdon
Publikationsdatum
01.06.2015
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 12/2015
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-015-8989-x

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