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

01-10-2014 | Ultrafinegrained Materials

Mechanical properties and microstructure evolution in an aluminum 6082 alloy processed by high-pressure torsion

Authors: Ehab El-Danaf, Megumi Kawasaki, Magdy El-Rayes, Muneer Baig, Jabair Ali Mohammed, Terence G. Langdon

Published in: Journal of Materials Science | Issue 19/2014

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Abstract

A commercial aluminum 6082 alloy was used to investigate the effect of the initial condition on subsequent processing by high-pressure torsion (HPT). The alloy was prepared in two different initial conditions: (i) in a T651 annealed condition and (ii) after a solution treatment followed by over-aging and subsequent processing by equal-channel angular pressing (ECAP). All samples were processed by HPT through 1/2, 1, 2, 5, and 10 turns and then the microstructures were examined using electron backscattered diffraction (EBSD). Significant grain refinement was achieved after processing by HPT through 5 turns with measured grain sizes of ~0.5 μm in both types of alloy. Microhardness measurements were conducted to evaluate the evolution of hardness after HPT for the two initial conditions. It is demonstrated that there is a difference in the hardness values between these two initial conditions, and this difference remains almost constant after processing by HPT.
previous article Interpretation of hardness evolution in metals processed by high-pressure torsion
next article Microstructure and texture evolution in low carbon steel deformed by differential speed rolling (DSR) method

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Metadata
Title
Mechanical properties and microstructure evolution in an aluminum 6082 alloy processed by high-pressure torsion
Authors
Ehab El-Danaf
Megumi Kawasaki
Magdy El-Rayes
Muneer Baig
Jabair Ali Mohammed
Terence G. Langdon
Publication date
01-10-2014
Publisher
Springer US
Published in
Journal of Materials Science / Issue 19/2014
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-014-8266-4

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