Reference : Modelling compression tests on aluminium produced by equal channel angular extrusion
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/24807
Modelling compression tests on aluminium produced by equal channel angular extrusion
English
Poortmans, Stijn [> >]
Duchene, Laurent mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Habraken, Anne mailto [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
Verlinden, Bert [> >]
2009
Acta Materialia
Elsevier Science
Yes (verified by ORBi)
International
1359-6454
[en] Equal channel angular extrusion (ECAE) ; Aluminium ; Compression test ; Finite element modelling (FEM) ; Texture
[en] The main objective of this paper was to characterize the mechanical properties of commercial purity aluminium AA1050 after being submitted to the equal channel angular extrusion (ECAE) process. Compression tests on cylindrical samples extracted from ECAE material are extensively described. The influence of ECAE conditions (number of passes, route, etc.) on the mechanical response is assessed.
The extraction of the material behaviour from the experimental results is not straightforward because of inhomogeneities occurring during the test. Therefore, an inverse modelling with the finite element method was used to obtain accurate material parameters by optimization. It appeared that an accurate material yield locus (based on texture analysis) is necessary in order to reproduce the anisotropic
behaviour of the ECAE material. On the other hand, its hardening behaviour during compression tests was satisfactorily represented by an elastic (near) perfectly plastic model.
http://hdl.handle.net/2268/24807
10.1016/j.actamat.2008.12.023
(C) 2009 Acta materialia Inc. Published by Elsevier Ltd. All rights reserved.

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