Reference : Phenomenological and crystal plasticity approaches to describe the mechanical behaviour ...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/67728
Phenomenological and crystal plasticity approaches to describe the mechanical behaviour of Ti6Al4V titanium alloy
English
Hammami, Walid [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Gilles, Gaëtan mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Habraken, Anne mailto [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
Duchene, Laurent mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
1-Jun-2011
International Journal of Material Forming
Springer
4
2
205-2015
Yes
International
1960-6206
1960-6214
Paris
france
[en] Ti6Al4V ; Crystal plasticity ; Texture ; Critical resolved shear stresses ; Anisotropy ; Strength differential effect ; LIMARC
[en] This paper presents a multiscale study of the quasi-static behaviour of a Ti6Al4V titanium alloy sheet. Tensile and compressive tests were carried out on specimens
along several orientations from the rolling direction in order to characterise the material anisotropy. In parallel, X-Ray diffraction texture measurements were performed before and after deformation in tension. A phenomenological model (CPB06exn) and a multiscale crystal plasticity model (Multisite) were investigated to describe the mechanical behaviour of the tested material. The identification
of the material parameters provides good predictions of the plastic anisotropy using both tensile and compressive data. The crystal plasticity model is in good agreement with the experiments in tension but it was observed that some
improvements should be done to take into account the tension-compression asymmetry displayed by the material. Moreover both models lead to a good prediction of the Lankford’s coefficients and yield strength.
http://hdl.handle.net/2268/67728
10.1007/s12289-011-1028-9
http://www.springerlink.com/content/x762234555n37u73/
(C) Springer-Verlag France 2011

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