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Mechanical behavior of alloy AA6111 processed by severe plastic deformation: modeling and experiment

journal contribution
posted on 2007-07-01, 00:00 authored by Y Estrin, K Rhee, Rimma Lapovok, P F Thomson
An established dislocation density related, one-internal variable model was used, with some modifications, as a basis for modeling the mechanical response of aluminum alloy AA6111. In addition to conventional rolling, equal channel angular pressing (ECAP) was used to produce a wide range of grain sizes, down to the submicrometer scale. The samples were heat treated before and after both processes to optimize tensile ductility. Implementation of the model to uniaxial tensile response of the conventionally rolled and the ECAP processed materials confirmed its good predictive capability. The model was further used to formulate simple relations between true uniform strain and the constitutive parameters that allow reliable prediction of the uniform elongation.

History

Journal

Journal of engineering materials and technology

Volume

129

Issue

3

Pagination

380 - 389

Publisher

American Society of Mechanical Engineers

Location

New York, N.Y.

ISSN

0094-4289

eISSN

1528-8889

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2007, ASME