Investigation of the Peritectic Phase Transition in a Commercial Peritectic Steel Under Different Cooling Rates Using In Situ Observation

Liu, Tao; Long, Mujun; Chen, Dengfu; Huang, Yunwei; Yang, Jie; Duan, Huamei; Gui, Lintao; Pang, Xu

doi:10.1007/s11663-019-01758-y

Cited by 27 publications

(7 citation statements)

References 27 publications

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“…However, the internal morphology of grain boundaries cannot be clearly observed due to the HTCLSM imaging and experimental conditions. Similar experimental phenomena were reported in previous in-situ observations 9,22,25,26) . Therefore, dark particles were first found near the austenite grain boundary.…”

Section: In-situ Characterization Of Secondary Phase Precipitationsupporting

confidence: 91%

Characterization and Control of Secondary Phase Precipitation of Nb–V–Ti Microalloyed Steel during Continuous Casting Process

et al. 2022

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Section: In-situ Characterization Of Secondary Phase Precipitationsupporting

confidence: 91%

Characterization and Control of Secondary Phase Precipitation of Nb–V–Ti Microalloyed Steel during Continuous Casting Process

et al. 2022

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“…2. In observations using laser-scanning microscopy, [23][24][25][26]28) the grain structure of γ phase was not identified. The expression "massive" is rather qualitative.…”

Section: Definition Of Transformation Modementioning

confidence: 97%

“…A high-temperature laserscanning confocal microscopy was also used to observe the solidification and related phenomena in steel. [23][24][25][26][27][28] Since around 2000, third-generation synchrotron radiation facilities, such as SPring-8, Hyogo, Japan, allows us to use a brilliant and monochromatized hard X-ray, which is suitable for observing solidification in metallic alloys in-situ by transmission imaging. Thanks to the developments, the imaging techniques have been widely used to observe the microstructure evolution in metallic alloys in-situ.…”

Section: X-ray Imagingmentioning

confidence: 99%

“…A study 25) using a high-temperature confocal scanning laser microscopy indicated that the δ phase did not trans- form massively to the γ phase in carbon steels (0.16 C, 1.08 Mn, 0.21 Si in mass%) at a cooling rate of less than 1 K/s, and the δ phase transformed to the γ phase massively at a cooling rate of 1 K/s. Similar results were obtained in previous works.…”

Section: Definition Of Transformation Modementioning

confidence: 99%

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Transformation from Ferrite to Austenite during/after Solidification in Peritectic Steel Systems: an X-ray Imaging Study

et al. 2020

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X-ray transmission imaging with X-ray diffractometry and time-resolved tomography with three-dimensional X-ray diffraction microscopy have been used to observe solidification and transformation in carbon steel and other Fe-based alloys. The imaging techniques showed a massive-like transformation, in which multiple austenite grains were produced in a single δ grain through a solid-solid transformation. The critical velocity from the diffusion-controlled growth of the γ phase to the massive-like transformation was as low as 5 μm/s. X-ray imaging indicated that the δ phase transforms massively to the γ phase in the conventional solidification processes, such as continuous casting. The massive-like transformation and multiple γ grains that were produced in the transformation were related to the subsequent microstructure evolution and casting defect formation. Solidification model including the massive-like transformation is expected to improve our understanding the solidification and the related phenomena in the peritectic steel systems.

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“…The results revealed that the peritectic transition process is controlled by solute diffusion and it was found that the partial remelting of the d phase is also affected by solute diffusion. Liu et al [14] used the HTLSCM technology to study the peritectic phase transition process of Fe-C alloys under different cooling rates. The results showed that the c phase nucleates and grows at the interface between the d phase and the L phase, and the c phase separates them rapidly.…”

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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Investigation of the Peritectic Phase Transition in a Commercial Peritectic Steel Under Different Cooling Rates Using In Situ Observation

Cited by 27 publications

References 27 publications

Characterization and Control of Secondary Phase Precipitation of Nb–V–Ti Microalloyed Steel during Continuous Casting Process

Characterization and Control of Secondary Phase Precipitation of Nb–V–Ti Microalloyed Steel during Continuous Casting Process

Transformation from Ferrite to Austenite during/after Solidification in Peritectic Steel Systems: an X-ray Imaging Study

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

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