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bib
--- Timezone: CET
Creation date: 2021-01-27
Creation time: 08-56-32
--- Number of references
3
article
Longuet:2009
A multiphase mechanical model for Ti-6Al-4V: Application to the modeling of laser assisted processing
Computational Material Science
2009
46
3
761-766
A multiphase model for Ti-6Al-4V is proposed. This material is widely used in industrial applications and so needs accurate behaviour modeling. Tests have been performed in the temperature range from 25 degrees C to 1020 degrees C and at strain rates between 10(-3) s(-1) and 1 s(-1). This allowed the identification of a multiphase mechanical model coupled with a metallurgical model. The behaviour of each phase is calibrated by solving an inverse problem including a phase transformation model and a mechanical model to simulate tests under thermomechanical loadings. A scale transition rule (beta-rule) is proposed in order to represent the redistribution of local stresses linked to the heterogeneity of plastic strain. Finally this model is applied to two laser assisted processes: direct laser fabrication and laser welding. (C) 2009 Elsevier B.V. All rights reserved.
Département SI2M : Microstructures et Contraintes
Chinese Soc Theoret & Appl Mech
0927-0256
10.1016/j.commatsci.2009.05.012
A.Longuet
Y.Robert
E.Aeby-Gautier
B.Appolaire
J. F.Mariage
C.Colin
G.Cailletaud
article
Xiong:2009
Pearlite in hypoeutectoid iron-nitrogen binary alloys
Journal of Materials Science
2009
44
2
632-638
In this study, hypoeutectoid Fe-N binary specimens have been prepared by gas nitriding pure iron in austenite domain at 840 A degrees C. The slow cooling of these specimens led to the alpha-ferrite + gamma'-Fe(4)N pearlitic microstructure which is similar to the pearlite in Fe-C binary system. This pearlitic microstructure has been characterized by electron microscopy. The crystal structure of the gamma'-Fe(4)N nitride has been identified by electron microdiffraction and the Nishiyama-Wassermann (N-W) and near Kurdjumov-Sachs (K-S) orientation relationships have been found between the alpha-ferrite and the gamma'-Fe(4)N.
Département SI2M : Microstructures et Contraintes
0022-2461
10.1007/s10853-008-3054-7
X. C.Xiong
A.Redjaïmia
M.Goune
article
Maniana:2009
Problème inverse pour le traitement laser des métaux à transformations de phases
International Journal of Thermal Sciences
2009
48
795--804
Département SI2M : Microstructures et Contraintes
doi:10.1016/j.ijthermalsci.2008.05.018
M.Maniana
A.Azim
H.Rhanim
P.Archambault