Paper Title:
Anisotropic Plastic Deformation and Damage in Commercial Al 2198 T8 Sheet Metal
  Abstract

Deformation anisotropy of sheet aluminium alloy 2198 (Al-Cu-Li) has been investigated by means of mechanical testing of notched specimens and Kahn-type fracture specimens, loaded in the rolling direction (L) or in the transverse direction (T). Contributions to failure are identified as growth of initial voids accompanied by a significant nucleation of a second population of cavities and transgranular failure. A model based on the Gurson-Tvergaard-Needleman (GTN) approach of porous metal plasticity incorporating isotropic voids, direction-dependent void growth, void nucleation at a second population of inclusions and triaxiality-dependent void coalescence has been used to predict the mechanical response of test samples. The model has been successfully used to describe and predict the direction-dependent deformation behaviour, crack propagation and, in particular, toughness anisotropy.

  Info
Periodical
Key Engineering Materials (Volumes 452-453)
Edited by
A. Saimoto and M.H. Aliabadi
Pages
97-100
DOI
10.4028/www.scientific.net/KEM.452-453.97
Citation
D. Steglich, H. Wafai, J. Besson, "Anisotropic Plastic Deformation and Damage in Commercial Al 2198 T8 Sheet Metal", Key Engineering Materials, Vols. 452-453, pp. 97-100, 2011
Online since
November 2010
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$32.00
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