Segregation of Sn on migrating interfaces of ferrite recrystallisation: quantification through APT measurements and comparison with the solute drag theory

Mavrikakis, N.; Saikaly, W.; Mangelinck, Dominique; Dumont, M.

doi:10.1016/j.mtla.2019.100541

Cited by 8 publications

(3 citation statements)

References 36 publications

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“…Figure 5(a) displays the composition plot for N = 1 at various driving forces. A dip in solute concentration is observed in front of the moving GB, consistent with experimental findings [41,42]. A similar concentration dip is evident for N = 10 (shown in figure 5(e)).…”

Section: Moving Gbsupporting

confidence: 89%

Solute segregation in a moving grain boundary: a phase-field approach

Guin,

Verma,

Bandyopadhyay

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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We present a phase-field approach for investigating monolayer and multilayer type solute segregation in a moving Grain boundary (GB). In this model, we introduce an expression for the GB solute interaction potential which allows for easy modification of the shape of the solute segregation profile at the GB. As a consequence, our phase-field simulations capture various segregation profiles in both stationary and migrating GB that agree with Cahn’s solute drag theory. Furthermore, we explore how different segregation profiles evolve at varying GB velocities owing to the inequality of the atomic flux of solute between the front and back faces of the moving GB. At a low-velocity regime, we observe that multilayer segregation results in significantly increased drag force compared to monolayer segregation. At a high-velocity regime, the opposite holds. Our simulation results also provide valuable insights for predicting grain growth in polycrystalline materials in the presence of solute segregation.

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Section: Moving Gbsupporting

confidence: 89%

Solute segregation in a moving grain boundary: a phase-field approach

Guin,

Verma,

Bandyopadhyay

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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“…Moreover, the binding energy E 0 was evaluated through the Cahn's theory dealing with the solute concentration profile at the vicinity of a migrating interface as compared to Sn concentration profile measured in the ternary alloy by atom probe tomography. More details about this can be found in [6].…”

Section: Model Parametersmentioning

confidence: 99%

“…Consequently, modelling of recrystallization kinetics requires accounting for recovery to estimate the remaining driving force for recrystallization. Previous studies focused on Sn segregation during recovery [5] and recrystallization [6] in an Fe-Si-Sn alloy. From these results, a recrystallization model is applied, which links recovery and recrystallization, and accounts for microstructural heterogeneity as input as well as solute drag effect.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of static recrystallization in Sn-added Fe-Si alloys

Dumont,

Mavrikakis,

Saikaly

et al. 2023

Metall. Res. Technol.

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Segregated solute atoms play an important role in grain boundary migration phenomena, which are critical for understanding the microstructure evolution in metals. Recrystallization kinetics of Fe-Si-Sn alloys were experimentally studied during static recrystallization. An established physical model that couples recovery and recrystallization was implemented to describe the experimental observations. The model was extended to include microstructural input, while taking into account the solute drag effect. The model is able to predict both the evolution of the recrystallized fraction and hardness after annealing in the temperature range [773K;1023K] for binary (Fe-5.8at. %Si) and ternary (Fe-5.8at. %Si-0.045at. % Sn) alloys.

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Grain boundary configurational entropy: a challenge

Lejček¹,

Školáková²

2023

J Mater Sci

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While the bulk of the high-entropy alloys is widely studied and characterized by their configurational entropy, there is a lack of general information regarding the configurational entropy of the grain boundaries. Here, we derived for the first time the basic relationships of this thermodynamic quantity related to the solute segregation at grain boundaries. Some examples of the appearance of the grain boundary configurational entropy are shown, and its effect on intergranular properties is discussed. It is stated that the role of grain boundary configurational entropy in interfacial properties is not completely clear and represents a challenge for future research.

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Segregation of Sn on migrating interfaces of ferrite recrystallisation: quantification through APT measurements and comparison with the solute drag theory

Cited by 8 publications

References 36 publications

Solute segregation in a moving grain boundary: a phase-field approach

Solute segregation in a moving grain boundary: a phase-field approach

Kinetics of static recrystallization in Sn-added Fe-Si alloys

Grain boundary configurational entropy: a challenge

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