Reference : Inhomogeneous and anisotropic deformation behavior and strain hardening of ultrafine-gra...
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/19619
Inhomogeneous and anisotropic deformation behavior and strain hardening of ultrafine-grained aluminium by ECAP
English
Poortmans, Stijn [> >]
El Houdaigui, Fouad [> >]
Habraken, Anne mailto [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
Verlinden, Bert [> >]
2006
Proceedings of the Ultrafine Grained Materials IV Conference
Zhu, Y. T.
Langdon, T. G.
Horita, Z.
Zehetbauer, M. J.
Semiatin, S. L.
Lowe, T. C.
Academic Press
389-394
Yes
International
London
United Kingdom
Ultrafine Grained Materials IV
2006
TMS (The Minerals, Metals & Materials Society)
[en] ECAP ; Mechanical testing ; Yield Surface
[fr] Inhomogeneous deformation
[en] LIMARC
[en] Hot-rolled AA1050 commercial pure aluminum was deformed by ECAP (Equal Channel Angular Pressing) at room temperature following route BC for 8 passes. Mechanical testing at room temperature on both hot-rolled aluminum and aluminum after ECAP consisted of uniaxial tension, axisymmetric compression and shear by torsion. The phenomenological Hill’s criterion identified from texture data accounts for the observed tension-compression asymmetry due to ECAP and predicts torsion yielding close to measurements. FE simulations of the compression tests are performed with a Hill model or a Minty micro-macro model and coupled with an isotropic Voce saturation hardening law. These simulations compute the inhomogeneous behavior due to barreling, the observed sample anisotropy and the force-displacement curve. Comparisons of numerical and experiments results provide a first identification of the hardening parameters and the friction coefficient during compression tests.
http://hdl.handle.net/2268/19619

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