ORBi: Hammami Walid - Phenomenological and crystal plasticity approaches to describe the mechanical behaviour of Ti6Al4V titanium alloy

Reference : Phenomenological and crystal plasticity approaches to describe the mechanical behaviour ...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/2268/67728

Title :	Phenomenological and crystal plasticity approaches to describe the mechanical behaviour of Ti6Al4V titanium alloy
Language :	English
Author, co-author :	Hammami, Walid [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
	Gilles, Gaëtan [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
	Habraken, Anne [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
	Duchene, Laurent [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Publication date :	1-Jun-2011
Journal title :	International Journal of Material Forming
Publisher :	Springer
Volume :	4
Issue/season :	2
Pages :	205-2015
Audience :	International
ISSN :	1960-6206
e-ISSN :	1960-6214
City :	Paris
Country :	france
Keywords :	[en] Ti6Al4V ; Crystal plasticity ; Texture ; Critical resolved shear stresses ; Anisotropy ; Strength differential effect
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.
Permalink :	http://hdl.handle.net/2268/67728
DOI :	10.1007/s12289-011-1028-9
Other URL :	http://www.springerlink.com/content/x762234555n37u73/
Mentions required by the publisher for OA :	(C) Springer-Verlag France 2011

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