A thermodynamic framework for coupled multiphase field and diffusion models for lower bainite transformation |
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| Authors: | Martin Düsing Rolf Mahnken |
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| Institution: | Chair of Engineering Mechanics, Paderborn University, Warburger Straße 100, 33098 Paderborn |
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| Abstract: | The lower bainite transformation is characterized by a displacive transformation from austenite to bainitic ferrite and a subsequent separation of carbon within the new supersaturated phase. At accumulations of carbon carbides precipitate. To model this complex process a framework considering phase changes and carbon diffusion is required. In this work we present a thermodynamic framework based on the theory of microforce balances considering multiphase Ginzburg-Landau equations coupled with Cahn-Hilliard diffusion. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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