Numerical multi-scale simulations of the mechanical behavior of β-metastable titanium alloysTi5553 andTi 17

Guillaume Martin 1 Loic Nazé 1 Georges Cailletaud 1
1 MAT - Centre des Matériaux
Abstract : The purpose of this study is to investigate the deformation mechanisms in the β-metastable titanium alloys Ti17 and Ti5553, which exhibit an important fraction of β phase (not, vert, similar 40%). A mean field model is introduced to depict the effect of microstructure onmechanical properties. The average behavior of each phase is taken into account : the micromechanical model simulates for each phase the respective elastic anisotropy and thevisco-plastic flow with kinematic and isotropic hardening. A good agreement has been obtained between numerical simulations andexperiments for several microstructures
Keywords : mean field model β-metastable titaniumalloys time dependent crystal plasticity
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Guillaume Martin, Loic Nazé, Georges Cailletaud. Numerical multi-scale simulations of the mechanical behavior of β-metastable titanium alloysTi5553 andTi 17. 11th International Conference on the Mechanical Behavior of Materials (ICM11), Jun 2011, Côme, Italy. pp.1803-1808, ⟨10.1016/j.proeng.2011.04.300⟩. ⟨hal-00619625⟩

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