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Coarse Slip Bands in a Single-Crystalline Aluminum Alloy

Published online by Cambridge University Press:  21 March 2011

Seung-Yong Yang ,
Xianghong Li  and
Aluminum Alloy
Seung-Yong Yang
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520-8284, USA
Xianghong Li
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520-8284, USA
Aluminum Alloy
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520-8284, USA
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Abstract

The effect of crystal orientation on the discontinuous deformation and coarse slip bands in aluminum single crystals has been investigated by finite element simulation. The numerical analysis is based on a rate-dependent crystal plasticity model recently formulated by us with modifications made here that explicitly accounts for the three strain hardening stages and the effect of the interaction of dislocations and alloying elements on setting the hardening rules on the individual slip systems of the aluminum alloy crystal. The dependence of the magnitude of the serrations of tensile stress-strain curves on orientation and its evolution over the three strain hardening stages of Al-0.3%Mg single crystals observed experimentally has been successfully explained in this investigation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 653: Symposium Z – Multiscale Modeling of Materials-2000 , 2000 , Z4.9
Copyright
Copyright © Materials Research Society 2001

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