Article Dans Une Revue Materials Science Forum Année : 2002

Determination of the Macroscopic Elastic Constants of a Phase Embedded in a Multiphase Polycrystal-Application to the β-Phase of a Ti-17 Titanium Based Alloy

Résumé

A one-site elastic self-consistent model from the mathematical formalism introduced by Kröner and Eshelby (KE) has been developed in order to solve the case of multiphase materials. This model has been applied to duplex steels and aluminium - silicium carbide Metal Matrix Composites (MMC) in the aim to study the evolution of their stiffness at pseudomacroscopic scale. Simulations justify the usually implicit hypothesis of the identity of the elastic moduli of a given phase, at macroscopic and pseudomacroscopic scales. The implementation of KE model by this hypothesis yields a new implicit formulation for the stiffness of a given unknown phase embedded in a two-phases material. This original characterization method will be applied to the β-phase of Ti-17 alloy. The singular behaviour in terms of residual pseudomacrostress of each phase after uniaxial loadings will be deduced from these data.

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relationship_isVariantFormatOf hal-01008063 Objet présenté à une conférence Sylvain Fréour, David Gloaguen, Manuel François, Ronald Guillen. Determination of the Macroscopic Elastic Constants of a Phase Embedded in a Multiphase Polycrystal-Application to the β-Phase of a Ti-17 Titanium Based Alloy. 6th European Conference on Residual Stresses (ECRS6), 2002, Coimbra, Portugal. ⟨10.4028/www.scientific.net/MSF.404-407.723⟩. ⟨hal-01008063⟩

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hal-01006729 , version 1 (01-02-2018)

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Sylvain Fréour, David Gloaguen, Manuel François, Ronald Guillen, Emmanuel Girard, et al.. Determination of the Macroscopic Elastic Constants of a Phase Embedded in a Multiphase Polycrystal-Application to the β-Phase of a Ti-17 Titanium Based Alloy. Materials Science Forum, 2002, 404-407, pp.723-728. ⟨10.4028/www.scientific.net/MSF.404-407.723⟩. ⟨hal-01006729⟩
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