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A comparison of continuous SPD processes for improving the mechanical properties of aluminum alloy 6111

Published online by Cambridge University Press:  31 January 2011

R. Lapovok ,
L.S. Tóth ,
M. Winkler  and
S.L. Semiatin
R. Lapovok*
Affiliation:
CoE Design in Light Metals, Department of Materials Engineering, Monash University, Melbourne 3800, Australia
L.S. Tóth
Affiliation:
Laboratoire de Physique et Mécanique des Matériaux, Université Paul Verlaine de Metz, Ile du Saulcy, 57045 Metz, France
M. Winkler
Affiliation:
CoE Design in Light Metals, Department of Materials Engineering, Monash University, Melbourne 3800, Australia
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Microstructure evolution, mechanical properties, formability, and texture development were determined for AA6111 samples processed by asymmetric rolling (ASR) with different roll friction, velocity, or diameters, conventional rolling (CR), and equal-channel-angular pressing (ECAP). Highly elongated or sheared grain structures were developed during ASR/CR and ECAP, respectively. ASR led to improved r-values and formability compared with CR primarily as a result of the development of moderate shear-texture components analogous to those developed during ECAP of billet material. ASR based on different roll diameters gave the best combination of strength, ductility, and formability.

Keywords

AlAlloyExtrusion
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 2 , February 2009 , pp. 459 - 469
Copyright
Copyright © Materials Research Society 2009

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References

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