Simulation of the Solidification and Microstructural Evolution in Steel Casting Processes Using the InterDendritic Solidification Tool. Issue 9 (29th May 2022)

• Record Type: Journal Article
• Authors: Miettinen, Jyrki; Somani, Mahesh; Visuri, Ville-Valtteri; Koskenniska, Sami; Louhenkilpi, Seppo; Fabritius, Timo; Kömi, Jukka
• Is Part Of: Steel research international. Volume 93:Issue 9(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-05-29
• Subjects: microstructures -- modeling -- solidification -- steels -- thermodynamics; Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.202200120
• Languages: English
• ISSNs: 1611-3683

Abstract

Abstract : InterDendritic Solidification (IDS) is a thermodynamic–kinetic software combined with a microstructure tool developed to simulate the nonequilibrium solidification (non‐EQS) of steels. Herein, its main calculation module, solidification (SOL), is introduced, and some essential results of that module, such as the formation of ferrite and austenite in different types of steels during their solidification, and the formation and dissolution of precipitates during subsequent cooling and heating processes, respectively, following solidification, are presented. The non‐EQS is compared with equilibrium and poor‐kinetics solidification to demonstrate the effect of kinetics on the results using finite solute diffusion and microstructure data. The poor‐kinetics solidification is comparable with the modified Scheil simulation ignoring the solid‐state diffusion of slowly moving metallic elements. A particular emphasis is made on demonstrating how to use a postprocessing treatment to control the residual ferrite amounts in stainless steels and the extent of precipitation in particular steel. In this context, the phenomena occurring behind the results are discussed. Finally, to validate the simulations of the SOL module, its calculations are compared with numerous solidification measurements, such as the liquidus and solidus temperatures of different steels and the residual ferrite amounts in stainless steels. Abstract : InterDendritic Solidification is a thermodynamic–kinetic software for simulating the nonequilibrium solidification (non‐EQS) of steels. Herein, the main functionalities of the model are described, and a comparison of the results of non‐EQS with equilibrium and poor‐kinetics solidification calculations is provided. Finally, the model is validated with numerous solidification measurements.