Effect of texture and microstructure on strain hardening anisotropy for aluminum deformed in uniaxial tension and simple shear

Uniaxial and simple shear stress–strain curves were obtained for a 1050-O aluminum alloy sheet sample in different specimen orientations with respect to the material symmetry axes. For uniaxial tension, a strong anisotropy of strain hardening was observed leading to about 30% difference in uniform t...

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Bibliographic Details
Published in:International journal of plasticity 2003, Vol.19 (1), p.1-22
Main Authors: Lopes, A.B., Barlat, F., Gracio, J.J., Ferreira Duarte, J.F., Rauch, E.F.
Format: Article
Language:English
Subjects:
Anisotropy
Crystallographic texture
Dislocation substructure
Polycrystal modeling
Shear test
Strain hardening
Tension test
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Summary:Uniaxial and simple shear stress–strain curves were obtained for a 1050-O aluminum alloy sheet sample in different specimen orientations with respect to the material symmetry axes. For uniaxial tension, a strong anisotropy of strain hardening was observed leading to about 30% difference in uniform tensile elongation between the extreme conditions. For simple shear, the hardening was also significantly different. These results were rationalized with an analysis that accounts for dislocation substructure observations, crystallographic texture measurements and polycrystal modeling of texture-induced strength evolution.
ISSN:0749-6419
1879-2154
DOI:10.1016/S0749-6419(01)00016-X