Modélisation des processus de transformation des dispersoïdes dans un alliage d'aluminium 3003 : influence de la description des équilibres thermodynamiques locaux

Abstract : A precipitation model is developped for a multicomponent alloy, in particular for 3003 aluminium alloy and multiphase precipitation during industrial thermal treatment. This model handle the evolution of the particle size distribution during different thermal treatments, either simple thermal treatment as isothermal holdings or more complex ther- mal treatment as industrial homogenisation treatment. ln this way, the model is coupled to an equilibrium thermodynamic calculation software called Thermo-Calc. ln a first time, we have studied the influence of the different description parameters which enter the model, then we have studied the influence of the way the equilibrium is thermodynamically described. ln a second time, the modelling results are compared to experimental ones obtained in the frame of the VirCast project. Those results leads to satisfaying qualitative comparisons but do not permit quantitative comparisons. ln order to enhance the results, the model must be coupled to an homogenisation model.
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Theses
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http://docnum.univ-lorraine.fr/prive/INPL_T_2004_SERRIERE_M.pdf
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https://hal.univ-lorraine.fr/tel-01750068
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Submitted on : Thursday, March 29, 2018 - 12:37:02 PM
Last modification on : Monday, April 16, 2018 - 10:41:04 AM

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Mickaël Serrière. Modélisation des processus de transformation des dispersoïdes dans un alliage d'aluminium 3003 : influence de la description des équilibres thermodynamiques locaux. Autre [cond-mat.other]. Institut National Polytechnique de Lorraine, 2004. Français. ⟨NNT : 2004INPL058N⟩. ⟨tel-01750068⟩

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