IDS: Thermodynamic–kinetic–empirical tool for modelling of solidification, microstructure and material properties

Miettinen, Jyrki; Louhenkilpi, Seppo; Kytönen, Heli; Laine, Jukka

doi:10.1016/j.matcom.2009.11.002

Cited by 81 publications

(58 citation statements)

References 10 publications

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“…When assuming a spherical nucleus with a radius of r generating, the free energy change of the system is given in Equation (16). In Equation (16), the first term describes the Gibbs energy change caused by the chemical reaction of nucleus formation.…”

Section: Homogeneous Nucleationmentioning

confidence: 99%

“…In Equation (16), the first term describes the Gibbs energy change caused by the chemical reaction of nucleus formation. ∆G V is the volume energy change of inclusion formation, which is calculated by the ratio of molar Gibbs energy change and the molar volume of inclusion.…”

Section: Homogeneous Nucleationmentioning

confidence: 99%

“…The predicted inclusions match the measured ones from the industrial samples well. To simulate inclusion behavior during casting and solidification, researchers at the Helsinki University of Technology (now Aalto University) combined InterDendritic Solidification (IDS) [16] software with the thermodynamic library ChemApp [28] (ICA [16,100]). IDS is a more elaborate model for solidification and phase transformation when compared with simple mathematical models.…”

Section: Clyne-kurzmentioning

confidence: 99%

See 2 more Smart Citations

Modeling Inclusion Formation during Solidification of Steel: A Review

You

Michelic

Presoly

et al. 2017

Metals

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Abstract:The formation of nonmetallic inclusions in the solidification process can essentially influence the properties of steels. Computational simulation provides an effective and valuable method to study the process due to the difficulty of online investigation. This paper reviews the modeling work of inclusion formation during the solidification of steel. Microsegregation and inclusion formation thermodynamics and kinetics are first introduced, which are the fundamentals to simulate the phenomenon in the solidification process. Next, the thermodynamic and kinetic models coupled with microsegregation dedicated to inclusion formation are briefly described and summarized before the development and future expectations are discussed.

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Section: Homogeneous Nucleationmentioning

confidence: 99%

Section: Homogeneous Nucleationmentioning

confidence: 99%

Section: Clyne-kurzmentioning

confidence: 99%

See 1 more Smart Citation

Modeling Inclusion Formation during Solidification of Steel: A Review

You

Michelic

Presoly

et al. 2017

Metals

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“…At each CA time step, the solid fraction increment of "interface" cell is calculated with 17,18) ................ (22) where V x and V y are the velocity components in both x-and y-directions, respectively.…”

Section: Methodsmentioning

confidence: 99%

Numerical Simulation of Solidification Structure of High Carbon Steel in Continuous Casting Using Cellular Automaton Method

2012

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A combined cellular automaton-finite difference (CA-FD) model has been developed to simulate solute diffusion controlled solidification in continuous steel casting. Constitutional and curvature undercooling were both solved to determine the equilibrium temperature and growth velocity of the solid/liquid interface. Simulations were firstly performed for both the free dendritic growth from an undercooled melt and the columnar dendritic growth in unidirectional solidification. Finally, competitive dendritic growth and columnar to equiaxed transition (CET) occurring in solidification of continuous casting process were reproduced by the present CA-FD model. The effect of the fragmentation of dendrites due to fluid flow induced by EMS in mould on nuclei was taken into consideration by increasing the grain density. The comparison between the simulated and experimentally observed results shows that the present model can be used to simulate solidification structure formation during the continuous casting process of steel. The influence of superheat on solidification structure was also analyzed, and it was found that increasing superheat increases the columnar dendritic growth and reduces the equiaxed ratio, as it is empirical well known.

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“…13) Nurmi et al 14) coupled the IDS 15) solidification model for steel with the -thermodynamic library 16) and then calculated the evolution of inclusions during secondary metallurgical treatment and subsequent casting and solidification. For a broad field of examples, the calculated results correspond well to the measurements; this performance certainly explains the frequent use and popularity of these models.…”

Section: Modeling Of Inclusion Formation During the Solidification Ofmentioning

confidence: 99%