A microstructure model for recrystallisation and phase transformation during the dual-phase steel annealing cycle

Bos, C.; Mecozzi, M.G.; Sietsma, Jilt

doi:10.1016/j.commatsci.2010.03.010

Cited by 71 publications

(47 citation statements)

References 23 publications

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“…Since control of the structural components, volume fraction and morphology are crucial in the DP steels, [10,11] and phase transformations model is the most important part of the present work. Avrami equation is the basis of the first proposed model:…”

Section: Phase Transformation Model Based On the Avrami Equationmentioning

confidence: 99%

Conventional and Multiscale Modeling of Microstructure Evolution During Laminar Cooling of DP Steel Strips

Pietrzyk

Kusiak

Kuziak

et al. 2014

Metall Mater Trans A

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Physical and numerical simulations of the hot rolling and laminar cooling of DP steel strips are presented in the paper. The objectives of the paper were twofold. Physical simulations of hot plastic deformation were used to identify and validate numerical models. Validated models were applied to simulate the manufacturing of DP steel strips. Conventional flow stress model and microstructure evolution model were used in the hot deformation part. The approach to the complex systems analysis based on global thermodynamic characterization and detailed microstructure characterization was applied to determine equilibrium state at various temperatures. Finally, two numerical models were used to simulate kinetics of austenite decomposition at varying temperatures: the first, conventional model based on the Avrami equation, and the second, the discrete Cellular Automata approach. Plastometric tests and stress relaxation tests were used for identification of the hot rolling model for the DP steel. Dilatometric tests were performed to identify the phase transformation models. Verification confirmed good accuracy of all models. Validated models were applied to simulate the manufacturing of DP steel strips. Influence of technological parameters (e.g., strip thickness and velocity, active sections in the laminar cooling, and water flux in the sections) on the DP microstructure was analyzed. The cooling schedules, which give required microstructures were proposed. The numerical tool, which simulates manufacturing chain for DP steel strips is the main output of the paper.

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Section: Phase Transformation Model Based On the Avrami Equationmentioning

confidence: 99%

Conventional and Multiscale Modeling of Microstructure Evolution During Laminar Cooling of DP Steel Strips

Pietrzyk

Kusiak

Kuziak

et al. 2014

Metall Mater Trans A

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“…This process is accompanied by nucleation and growth of new phase [72,73]. Similar to reystallization, the nucleation sites preferably occur in areas such as the grain boundaries, deformation bands or twin boundaries in grain interior and the growth of new phase is realized by the reduction of system total energy.…”

Section: Introductionmentioning

confidence: 98%

Review on cellular automata simulations of microstructure evolution during metal forming process: Grain coarsening, recrystallization and phase transformation

Yang

et al. 2011

Sci. China Technol. Sci.

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Cellular automata (CA) algorithm has become an effective tool to simulate microstructure evolution. This paper presents a review on CA modeling of microstructural evolution, such as grain coarsening, recrystallization and phase transformation during metal forming process which significantly affects mechanical properties of final products. CA modeling of grain boundary motion is illustrated and several aspects of recrystallization are described, e.g. nucleation and growth, the development of static and dynamic recrystallization. For phase transformation, attention is paid to such key factors as solute element diffusion and change of systemic chemical free energy. In view of the reviewed works, several open questions in the field of further development of CA simulation are put forward and recommendations to them are given. cellular automata algorithm, grain coarsening, recrystallization, phase transformation Citation: Yang H, Wu C, Li H W, et al. Review on cellular automata simulations of microstructure evolution during metal forming process: Grain coarsening, recrystallization and phase transformation.

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“…Values of the parameters can be found in. 49) Bos et al 50) and Mecozzi et al 51) presented a threedimensional model of phase transformation of dual phase steel (ferrite + perlite) during annealing, which considers the ferrite recrystallization and austenite-ferrite, perlite-austenite, austenite-ferrite and austenite-martensite transformations.…”

Section: State Of Art In Simulation Of Phase Transformation -Ca Modelsmentioning

confidence: 99%

Three-dimensional Frontal Cellular Automata Model of Microstructure Evolution – Phase Transformation Module

Svyetlichnyy

Mikhalyov

2014

ISIJ Int.

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The paper presents three-dimensional frontal cellular automata (FCA) based model for modeling of microstructure evolution during technological processes. It is hierarchical system. The first level is FCA, the second level is modules of microstuctural phenomena; and the third level is models of technological processes. The phase transformation module (PTM) is one of the components of the second level. PTM will contain several models of phase transformation; one of them presents transformation of austenite into ferrite and perlite. This phase transformation controlled by diffusion is considered as the nucleation and the growth of grains of other phases. The nucleation algorithm is presented in the paper. An effect of nucleation sites on final microstructure was studied on three extreme nucleation variants: nucleation on the boundaries, on the edges and in the grain corners. Simulations have been carried out for low cooling rate and relatively long time of the holding at appropriate temperature. The simulation results of the microstructure evolution studies are presented in the paper.

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A microstructure model for recrystallisation and phase transformation during the dual-phase steel annealing cycle

Cited by 71 publications

References 23 publications

Conventional and Multiscale Modeling of Microstructure Evolution During Laminar Cooling of DP Steel Strips

Conventional and Multiscale Modeling of Microstructure Evolution During Laminar Cooling of DP Steel Strips

Review on cellular automata simulations of microstructure evolution during metal forming process: Grain coarsening, recrystallization and phase transformation

Three-dimensional Frontal Cellular Automata Model of Microstructure Evolution – Phase Transformation Module

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