2026-04-22T06:57:00Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/62212024-04-19T08:26:43Zcom_20.500.11984_473col_20.500.11984_478

00925njm 22002777a 4500 dc Garcia-Michelena, Pablo author Herrero-Dorca, Nuria author chamorro, xabier author 2024 Vacuum induction melting is crucial in casting nickel-based superalloy components, ensuring excellent properties for aero-engine applications. Precise melting temperatures are vital for achieving optimal metallurgical quality before casting. Hence, a multiphysics numerical model is developed to simulate the induction melting process for the Inconel 718 superalloy. The proposed holistic model integrates magnetic fields, induced currents, and heat and momentum transfer phenomena in a single coupled model. A moving mesh approach reproduces the magneto-hydrodynamic behavior of the free surface, simulating the oscillations of the melt. The stabilized deformed surface profile is correlated with experimental measurements, reporting a proper correlation. Then, the flow field and recirculation effect are modeled with a Low Reynolds Number turbulence approach and coupled with the melt convective heat transfer, developing a complete magneto-thermo-hydrodynamic model. In a laboratory-scale vacuum induction melting furnace, transient melting operation variables are characterized and introduced to the numerical model to compute the temperature evolution. An accurate reproduction of the transient melt temperature variations is reported with a relative error of less than 5%. The influence of the crucible thermal insulating capacity is assessed, emissivity dependence evaluated, and melt homogenization is reported at different process stages. This comprehensive numerical and experimental approach offers valuable insights for enhancing vacuum induction melting for Ni-based superalloys. 1359-4311 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=174490 https://hdl.handle.net/20.500.11984/6221 Vacuum induction melting Multiphysics modeling Experimental validation Turbulent heat transfer Dynamic modeling Moving mesh ODS 7 Energía asequible y no contaminante ODS 9 Industria, innovación e infraestructura Multiphysics modeling and experimental validation of heat and mass transfer for the vacuum induction melting process