Peritectic phase transformation in the Fe–Mn and Fe–C system utilizing simulations with phase-field method

Alves, Celso Luiz Moraes; Rezende, João Luiz Lopes; Senk, Dieter; Kundin, Julia

doi:10.1016/j.jmrt.2018.01.001

Cited by 14 publications

(4 citation statements)

References 27 publications

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“…The 𝛾 → α is a common martensitic transformation process [40,41]. The phase transformation of 𝛾 → 𝜀 → α is mostly occurring in Fe-Mn alloy [42] and Fe-Cr-Ni alloy [43] with low stacking fault energy. Regarding the effect of 𝜀 on α formation, it is reported that 𝜀 can provide potential nucleation locations to accelerate kinetic phase transformation [44].…”

Section: Effect Of Strain Conditions On Microstructurementioning

confidence: 99%

Constitutive Models for the Strain Strengthening of Austenitic Stainless Steels at Cryogenic Temperatures with a Literature Review

He,

Wang,

2023

Metals

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Austenitic stainless steels are widely used in cryogenic pressure vessels, liquefied natural gas pipelines, and offshore transportation liquefied petroleum gas storage tanks due to their excellent mechanical properties at cryogenic temperatures. To meet the lightweight and economical requirements, pre-strain of austenitic stainless steels was conducted to improve the strength at cryogenic temperatures. The essence of being strengthened by strain (strain strengthening) and the phase-transformation mechanism of austenitic stainless steels at cryogenic temperatures are reviewed in this work. The mechanical properties and microstructure evolution of austenitic stainless steels under different temperatures, types, and strain rates are compared. The phase-transformation mechanism of austenitic stainless steels during strain at cryogenic temperatures and its influence on strength and microstructure evolution are summarized. The constitutive models of strain strengthening at cryogenic temperatures were set to calculate the volume fraction of strain-induced martensite and to predict the mechanical properties of austenitic stainless steels.

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Section: Effect Of Strain Conditions On Microstructurementioning

confidence: 99%

Constitutive Models for the Strain Strengthening of Austenitic Stainless Steels at Cryogenic Temperatures with a Literature Review

He,

Wang,

2023

Metals

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“…Through the above-mentioned simulation of interface movement and carbon redistribution/diffusion, the peritectic solidification simulation of Fe-C alloy can be achieved. [10][11][12] In recent years, experimental methods and numerical simulations are used to study the Fe-C peritectic solidification process. According to in-situ experiment, Yasuda et al [13] explored the dendrite fragmentation induced by massive-like δγ transformation in Fe-C alloy, which illustrated the dendrite arm fragmentation mechanism during the peritectic solidification.…”

Section: Introductionmentioning

confidence: 99%

Multi-phase-field simulation of austenite peritectic solidification based on a ferrite grain*

Yang¹,

Wang²,

Wang³

et al. 2021

Chinese Phys. B

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A multi-phase-field model is implemented to investigate the peritectic solidification of Fe-C alloy. The nucleation mode of austenite is based on the local driving force, and two different thicknesses of the primary austenite on the surface of the ferrite equiaxed crystal grain are used as the initial conditions. The simulation shows the multiple interactions of ferrite, austenite, and liquid phases, and the effects of carbon diffusion, which presents the non-equilibrium dynamic process during Fe-C peritectic solidification at the mesoscopic scale. This work not only reveals the influence of the austenite nucleation position, but also clarifies the formation mechanism of liquid phase channels and molten pools. Therefore, the present study contributes to the understanding of the micro-morphology and micro-segregation evolution mechanisms of Fe-C alloy during peritectic solidification.

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“…The formation mechanism of microstructure and micro-segregation was analyzed, and the reason for the production of microscopic liquid channels and melting pools was explained by solute diffusion. Alves et al [38][39][40] quantitatively investigated on the peritectic phase transformation during the isothermal solidification of Fe-Mn alloys using the phase field simulations. Feng et al [41] investigated the relation between the rate of peritectic reaction and the curvature of the nucleation site of c phase based on multi-phase field model.…”

Section: Introductionmentioning

confidence: 99%

Multiphase Field Modeling of Dendritic Solidification of Low-Carbon Steel with Peritectic Phase Transition

Yang

Luo

Wang

et al. 2021

Metall Mater Trans B

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In the present study, an improved multiphase field model with taking into consideration the S/L interface anisotropy is proposed to simulate the dendritic growth with peritectic transition of low-carbon steel, and a new random heterogeneous nucleation method is proposed to treat the c phase nucleation during the peritectic solidification process. The c phase growth around the dendrite (the single dendrite and polycrystalline ferrite) and the subsequent peritectic transformation during the peritectic solidification are simulated. The results show that when the temperature reaches the c phase nucleation temperature, c nuclei suddenly nucleate at the d/ L interface, and laterally grow with the movement of L/c/d triple point around the d/L interface of d dendrite. After the d dendrite is fully wrapped by the continuous intervening c phase, the c phase continues to grow with direct phase transformation from both d phase and liquid phase. With the increase of melt undercooling, more d phase and liquid phase are consumed to form c phase, and the intervening c phase between the d dendrite and liquid phase becomes more and more thick, but the d dendrite arm becomes more and more thin. During the dendritic solidification process, the solute would be rejected from dendrite trunk with the dendritic growth and enriched at the dendrite boundary, especially at the dendrite root. The solute enrichment at the dendrite root would inhibit the c phase growth at the dendrite root and thus the thickness of intervening c phase at the dendrite root is thinnest around the dendrite. Moreover, the solute concentration in c phase is among the d phase and liquid phase, because the carbon solubility in c phase is higher than that in d phase, but lower than that in liquid phase.

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Peritectic phase transformation in the Fe–Mn and Fe–C system utilizing simulations with phase-field method

Cited by 14 publications

References 27 publications

Constitutive Models for the Strain Strengthening of Austenitic Stainless Steels at Cryogenic Temperatures with a Literature Review

Constitutive Models for the Strain Strengthening of Austenitic Stainless Steels at Cryogenic Temperatures with a Literature Review

Multi-phase-field simulation of austenite peritectic solidification based on a ferrite grain*

Multiphase Field Modeling of Dendritic Solidification of Low-Carbon Steel with Peritectic Phase Transition

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