2026-03-062016Metallurgical and Materials Transactionshttps://hdl.handle.net/20.500.12272/14692This paper presents a coupled thermo-mechanical-metallurgical formulation to predict the dimensional changes and microstructure of a ductile cast iron part as a consequence of an austempering heat process. To take into account the different complex phenomena which are present in the process, the stress-strain law and plastic evolution equations are defined within the context of the associate rate-independent thermo-plasticity theory. The metallurgical model considers the reverse eutectoid, ausferritic, and martensitic transformations using macro- and micro-models. The resulting model is solved using the finite element method. The performance of this model is evaluated by comparison with experimental results of a dilatometric test. The results indicate that both the experimental evolution of deformation and temperature are well represented by the numerical model.pdfeninfo:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Thermomechanicalmetyallurgical formulationductile cast ironaustempering heat procesinfo:eu-repo/semantics/articlePatricia Dardatihttp://creativecommons.org/licenses/by-nc-nd/4.0/10.1007/s11663-015-0511-y