Article (Scientific journals)
Phenomenological and crystal plasticity approaches to describe the mechanical behaviour of Ti6Al4V titanium alloy
Hammami, Walid; Gilles, Gaëtan; Habraken, Anne et al.
2011In International Journal of Material Forming, 4 (2), p. 205-2015
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Keywords :
Ti6Al4V; Crystal plasticity; Texture; Critical resolved shear stresses; Anisotropy; Strength differential effect; LIMARC
Abstract :
[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.
Disciplines :
Materials science & engineering
Author, co-author :
Hammami, Walid ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F
Gilles, Gaëtan ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F
Habraken, Anne  ;  Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo
Duchene, Laurent  ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F
Language :
English
Title :
Phenomenological and crystal plasticity approaches to describe the mechanical behaviour of Ti6Al4V titanium alloy
Publication date :
01 June 2011
Journal title :
International Journal of Material Forming
ISSN :
1960-6206
eISSN :
1960-6214
Publisher :
Springer, Paris, France
Volume :
4
Issue :
2
Pages :
205-2015
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 September 2012

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