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Méthodes numériques avancées pour la simulation du procédé de trempe industrielle

Abstract : Quenching is a heat treatment method where a hot metal part is cooled down rapidly with the help of a quenchant. The purpose of such process is to give a certain microstructure to the metal in order to achieve the required mechanical performance. This process has direct impacts on changing mechanical properties, controlling microstructure and releasing residual stresses. Good control of quenching is essential for correctly controlling the phase changes that take place within the alloy, and obtain the microstructure exhibiting the desired thermomechanical properties. This Phd is done in collaboration with the company Linamar Montupet specialized in the manufacture of complex cast alumnium components for the automotive industry. They are interested in the quenching of metallic parts in liquid quenchants that can vaporize. The vaporizationis generally the leading phenomenon that drives the system. Indeed, the cooling of the part is strongly conditioned by the behavior of the surrounding fluid that extracts the heat therein.Thus, the objective of this thesis is to set a numerical framework able to simulate the quenching process at an industrial scale. In this thesis, different aspects will be studied: (i) analyze and simulate the liquid-vapor-solid interactions with phase change, (ii) simulate fluid-solid interactions to be able to predict the thermomechanical behavior of the solid. The results coming from these numerical development will be validated by confrontations with the experiments proposed in agreement with the industrial partner.
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Submitted on : Wednesday, March 3, 2021 - 11:30:12 AM
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  • HAL Id : tel-03157524, version 1

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Chahrazade Bahbah. Méthodes numériques avancées pour la simulation du procédé de trempe industrielle. Mechanics of materials [physics.class-ph]. Université Paris sciences et lettres, 2020. English. ⟨NNT : 2020UPSLM012⟩. ⟨tel-03157524⟩

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