Phase field simulation of microstructure evolution in Fe–Cr–Co alloy during thermal magnetic treatment and step aging

Lv, Liangxing; Zhen, Liang; Xu, Chunjian; Sun, Xiaofeng

doi:10.1016/j.jmmm.2009.12.002

Cited by 23 publications

(2 citation statements)

References 19 publications

(21 reference statements)

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“…Suwa et al studied the effect of Mo on phase separation in the Fe-40 at.% Cr alloy with numerical simulation based on the Cahn-Hilliard equation [24,25]. Lv et al studied the microstructure evolution in Fe-Cr-Co alloys during thermal magnetic treatment and step aging with phase-field simulation [26].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Phase-Field Simulation of Composition Partition and Separation Kinetics of Nanoscale Phase in Fe-Cr-Al Alloy

Chen

Shi

et al. 2019

Journal of Nanomaterials

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Phase separation of the Cr-enriched nanoscale α′ phase in the Fe-38 at.% Cr-10 at.% Al alloy is studied by utilizing phase-field simulation. The partition of elements in the α and α′ phases is clarified with the composition evolution through the α/α′ phase interface, and the separation kinetics is quantitatively investigated by the temporal evolution of the size and volume fraction of the α′ phase. Aluminum partitions into the Fe-enriched α phase and depletes in the α′ phase, and the partition coefficient decreases as the temperature changes from 720 K to 760 K for the steady-state coarsening stage. As the temperature increases, the initial change rate of the volume fraction of the α′ phase is faster, indicating an accelerated phase separation. At the coarsening stage, the average particle distance and coarsening rate constant of the α′ phase increase with increased temperature, and the ratio of the Ostwald ripening is dominating compared with coalescence coarsening. The element partition and kinetics evolution of the α′ phase with temperature are helpful for the morphology and property predication of nanoscale precipitates.

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Section: Introductionmentioning

confidence: 99%

Quantitative Phase-Field Simulation of Composition Partition and Separation Kinetics of Nanoscale Phase in Fe-Cr-Al Alloy

Chen

Shi

et al. 2019

Journal of Nanomaterials

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“…[11][12][13] Simulation of spinodal decomposition in the Fe-Cr-Co alloys using the PF method has been reported by many researchers. [14][15][16] In our previous study 17) , the effects of plastic deformation on Fe-Cr-Co spinodal under isothermal conditions were investigated by experiment and phase-field method. Lv 16) et al evaluated the microstructure after step aging treatment by comparing it with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Phase-Field Modeling of Spinodal Decomposition in Fe–Cr–Co Alloy under Continuous Temperature-changing Conditions

et al. 2023

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Fe-Cr-Co alloys are becoming important as a half-hard magnet for their novel applications, including non-contact electromagnetic brakes, because of the controllability of its magnetic hardness depending on the modulated structure formed by spinodal decomposition. However, the experimental optimization of the complicated heat-treatment process to control the microstructure significantly increases the development cost, and microstructure prediction by computational simulation is desired.In this study, we first developed the method of phase-field simulation for spinodal decomposition in Fe-Cr-Co alloy during various heat treatments, including isothermal heat treatment, multistep continuous fast and slow cooling, which allows us to conduct a simulation of spinodal decomposition under conditions close to the condition of practical heat treatment. The simulation results revealed that the morphology of the modulated structure is predominantly determined by the cooling rate and does not change significantly during the subsequent isothermal annealing process, while the difference between the concentrations of the FeCo-rich magnetic phase and the Cr-rich non-magnetic phase increases. Continuous cooling at rates higher than 140 K/h demonstrates the maximum number densities of the ferromagnetic particles of α1-phase seemingly almost reaching saturation, which is expected to give rise to exhibiting the largest coercive force of the Fe-Cr-Co magnet. Moreover, this method can be extended to other materials for designing a modulated structure to show a desired property.

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Ferromagnetic–Antiferromagnetic Coupling in Gas‐Phase Synthesized M(Fe, Co, and Ni)–Cr Nanoparticles for Next‐Generation Magnetic Applications

Bohra,

Giaremis,

et al. 2024

Advanced Science

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Combining ferromagnetic–antiferromagnetic materials in nanoalloys (i.e., nanoparticles, NPs, containing more than one element) can create a diverse landscape of potential electronic structures. As a result, a number of their magnetic properties can be manipulated, such as the exchange bias between NP core and shell, the Curie temperature of nanoparticulated samples, or their magnetocaloric effect. In this work, such a family of materials (namely M–Cr NPs where M is Fe, Co, Ni, or some combination of them) is reviewed with respect to the tunability of their magnetic properties via optimized doping with Cr up to its solubility limit. To this end, gas‐phase synthesis has proven a most effective method, allowing excellent control over the physical structure, composition, and chemical ordering of fabricated NPs by appropriately selecting various deposition parameters. Recent advances in this field (both experimental and computational) are distilled to provide a better understanding of the underlying physical laws and point toward new directions for cutting‐edge technological applications. For each property, a relevant potential application is associated, such as memory cells and recording heads, induced hyperthermia treatment, and magnetic cooling, respectively, aspiring to help connect the output of fundamental and applied research with current real‐world challenges.

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Phase field simulation of microstructure evolution in Fe–Cr–Co alloy during thermal magnetic treatment and step aging

Cited by 23 publications

References 19 publications

Quantitative Phase-Field Simulation of Composition Partition and Separation Kinetics of Nanoscale Phase in Fe-Cr-Al Alloy

Quantitative Phase-Field Simulation of Composition Partition and Separation Kinetics of Nanoscale Phase in Fe-Cr-Al Alloy

Phase-Field Modeling of Spinodal Decomposition in Fe–Cr–Co Alloy under Continuous Temperature-changing Conditions

Ferromagnetic–Antiferromagnetic Coupling in Gas‐Phase Synthesized M(Fe, Co, and Ni)–Cr Nanoparticles for Next‐Generation Magnetic Applications

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