Analysis of surface roughening in AA6111 automotive sheet

The finite element method is used to numerically simulate the topographic development in an aluminium sheet, AA6111, under stretching. The measured electron backscatter diffraction (EBSD) data are directly incorporated into the finite element model and the constitutive response at an integration poi...

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Bibliographic Details
Published in:Acta materialia 2004-04, Vol.52 (7), p.1785-1798
Main Authors: Wu, P.D., Lloyd, D.J.
Format: Article
Language:English
Subjects:
Aluminum alloys
Applications
Applied sciences
Automotive engineering
Contact of materials. Friction. Wear
Crystal plasticity
EBSD
Engineering techniques in metallurgy. Applications. Other aspects
Exact sciences and technology
Finite element analysis
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Surface
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Summary:The finite element method is used to numerically simulate the topographic development in an aluminium sheet, AA6111, under stretching. The measured electron backscatter diffraction (EBSD) data are directly incorporated into the finite element model and the constitutive response at an integration point is described by the single crystal plasticity theory. The effect on surface roughening of sample geometry, strain rate sensitivity, work hardening, imposed deformation path, as well as the EBSD step size, spatial orientation distribution and inhomogeneous deformation within individual grains are discussed. It is concluded that surface roughening is controlled by the spatial distribution of grain orientations through the thickness of the specimen.
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2003.12.039