Comparison of casting and solidification of 12 tON steel ingot using two different numerical software

Kotásek, Ondřej; Kurka, Vladislav; Vindyš, Marek; Jonšta, Petr; Noga, Roman; Dobiáš, Marek

doi:10.37904/metal.2021.4091

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…Based on these methods, commercial simulation software [14] for the casting process have been developed, such as ProCast, Thercast, MAGMASoft, and Flow3D. These simulation tools [15][16][17][18][19][20][21][22] allow prediction of temperature, fluid flow, distortion, stress and even microstructure in continuous casting or ingot casting. The main key issues are the properties and microstructural features of materials which play an important role in numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Modelling Microstructure in Casting of Steel via CALPHAD-Based ICME Approach

Luo,

Hansson,

Song

et al. 2023

Alloys

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Integrated computational materials engineering (ICME) is emerging as an increasingly powerful approach to integrate computational materials science tools into a holistic system and address the multiscale modeling challenges in the processing of advanced steels. This work aims at incorporating macroscopic model (finite element-based thermal model) and microscopic model (CALPHAD-based microstructure model), building an industry-oriented computational tool (MICAST) for casting of steels. Two case studies were performed for solidification simulations of tool steel and stainless steel by using the CALPHAD approach (Thermo-Calc package and CALPHAD database). The predicted microsegregation results agree with the measured ones. In addition, two case studies were performed for continuous casting and ingot casting with selected steel grades, mold geometries and process conditions. The temperature distributions and histories in continuous casting and ingot casting process of steels were calculated using in-house finite-element code which is integrated in MICAST. The predicted temperature history from the casting process simulation was exported as input data for the DICTRA simulation of solidification. The resulting microsegregation by the DICTRA simulation can reflect the microstructure evolution in the real casting process. Current computational practice demonstrates that CALPHAD-based material models can be directly linked with casting process models to predict location-specific microstructures for smart material processing.

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Section: Introductionmentioning

confidence: 99%

Modelling Microstructure in Casting of Steel via CALPHAD-Based ICME Approach

Luo,

Hansson,

Song

et al. 2023

Alloys

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A Simplified Model for Semi-continuous Casting of Steel

Kim

2023

J. of Materi Eng and Perform

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Application of physical simulation to evaluate the impact of teeming method and rate on axial zone formation of large ingots

Gamanyuk

Rutskii

Zyuban

et al. 2022

Izv. vysš. učebn. zaved., Čern. metall.

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The article presents the results of evaluation of the impact of teeming method and rate on solidification and formation of the axial zone of large ingots. The research is based on a physical simulation. With this aim a laboratory-scale plant (a crystallization mould) was designed and built which enabled to visualize and monitor solidification and structural formation of the model ingots. Sodium thiosulphate (crystal hyposulphite) – Na2S2O3·5H2O was used as a modeling solution. Matching of the processes in the model and in real industrial conditions of ingot teeming was assessed with similarity criteria obtained on the basis of the dimension theory with consideration of the physical and chemical processes in the ingot during its teeming and crystallization. Two methods – downhill casting and uphill casting – were used to teem the melt into the mould. During teeming the geometry and technological parameters of the model ingots remained unchanged while the teeming rate was altered. Length and medium width of the model ingot axial zone were measured. The thermal profiling of the surface of the mould model was monitored over the entire period of solidification to evaluate the thermal field alteration while the ingot was teemed and crystallized. Thermal imaging processing made it possible to observe temperature changes of the surface of the model mould from top to bottom for downhill cast ingots teemed at different rates. The results obtained demonstrate that teeming rate has a noticeable impact on the axial zone length. It was established that a decreased rate leads to an increased directionality of crystallization and improvement of the ingot axial zone structure.

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Comparison of casting and solidification of 12 tON steel ingot using two different numerical software

Cited by 4 publications

References 3 publications

Modelling Microstructure in Casting of Steel via CALPHAD-Based ICME Approach

Modelling Microstructure in Casting of Steel via CALPHAD-Based ICME Approach

A Simplified Model for Semi-continuous Casting of Steel

Application of physical simulation to evaluate the impact of teeming method and rate on axial zone formation of large ingots

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