Atomic Cluster Aggregates in Nucleation of Solid Alumina Inclusion in the Aluminum Deoxidation for Liquid Iron

Wang, Guocheng; Xiao, Yuanyou; Zhao, Changming; Li, Jing; Shang, Deli

doi:10.1007/s11663-017-0973-1

Cited by 20 publications

(16 citation statements)

References 34 publications

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“…Hence, it can be suggested that the thermodynamic equilibrium of Ca-deoxidaiton reaction in liquid iron has a close relationship with the metastable phase, such as dissolved associated compound Ca-O, nano-CaO etc. Wang et al 22,38,39 reported that the deoxidation thermodynamics in liquid iron have a close relationship with the structures and properties of deoxidaiton products, and suggested that the deoxidizers react with dissolved oxygen in molten steel to form various metastable intermediates at rst, and then the metastable intermediates transform into stable crystal inclusion. Wasai et al 40 and Zhao et al 41 found nanoscale inclusions in deoxidation experiments by ultra-rapid cooling process.…”

Section: Multi-equilibria Thermodynamics Of Cao In Liquid Ironmentioning

confidence: 99%

Thermodynamic insight into the growth of calcia inclusions at the nanoscale: the case of Fe–O–Ca melt

et al. 2019

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Section: Multi-equilibria Thermodynamics Of Cao In Liquid Ironmentioning

confidence: 99%

Thermodynamic insight into the growth of calcia inclusions at the nanoscale: the case of Fe–O–Ca melt

et al. 2019

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“…Wang et al [25,47,48] suggested that the formation of inclusions in molten steel follows a two-step nucleation mechanism. Firstly, the deoxidizers react with dissolved oxygen in molten steel to form various metastable structures, and then the metastable structures transform into stable crystal.…”

Section: Multi-equilibria Thermodynamics Of Mgo In Liquid Ironmentioning

confidence: 99%

“…Then, the metastable magnesia grows up into bulk magnesia. However, it is suggested that the deoxidation reaction in liquid iron is very difficult to reach the final equilibrium between bulk inclusion and liquid iron because of low supersaturation, and the products of deoxidation reaction may be various metastable inclusions in many cases [25,47,48].…”

Section: Multi-equilibria Thermodynamics Of Mgo In Liquid Ironmentioning

confidence: 99%

Thermodynamic Modelling on Nanoscale Growth of Magnesia Inclusion in Fe-O-Mg Melt

Xiao

Lei

Yang

et al. 2019

Metals

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Nano-magnesia is the intermediate product during the growth of magnesia inclusion in Mg-deoxidized steel. Understanding the thermodynamics on nano-magnesia is important to explore the relationship between magnesia product size and deoxidation reaction in molten steel. In this work, a thermodynamic modeling is developed to study the Mg-deoxidation reaction between nano-magnesia inclusions and liquid iron. The thermodynamic results based on the first principle method show that the Gibbs free energy change for the forming magnesia product decrease gradually with the increasing nano-magnesia size in liquid iron. The published experimental data about Mg-deoxidation equilibria in liquid iron are scattered across the region between the thermodynamic curves of 2 nm magnesia and bulk-magnesia. It is suggested that these scattered experimental data of Mg-deoxidized liquid iron are in different thermodynamic states. Some of these experiments are in equilibrium with bulk-magnesia, while most of these experiments do not reach the equilibrium state between bulk magnesia and liquid iron, but in quasi-equilibria between nano-magnesia and liquid iron. This is the reason that different researchers gave different equilibrium constants. Furthermore, the behavior of the metastable magnesia is one of the most important reasons for the supersaturation ratio or the excess oxygen for MgO formation in liquid iron.

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“…e research focused on the formation mechanism of inclusions and the distribution of gas stirring in clean steel. Wang et al studied the crystal structure and cluster mechanism of inclusions, especially alumina [15]. However, there was no reasonable demonstration on the distribution of inclusions or a mathematical model.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Investigation on Inclusion‐Argon‐Liquid Steel Phenomenon in RH Refining of High‐Manganese and High‐Aluminum Steel

Chen

Liu

Han

et al. 2019

Mathematical Problems in Engineering

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Atomic Cluster Aggregates in Nucleation of Solid Alumina Inclusion in the Aluminum Deoxidation for Liquid Iron

Cited by 20 publications

References 34 publications

Thermodynamic insight into the growth of calcia inclusions at the nanoscale: the case of Fe–O–Ca melt

Thermodynamic insight into the growth of calcia inclusions at the nanoscale: the case of Fe–O–Ca melt

Thermodynamic Modelling on Nanoscale Growth of Magnesia Inclusion in Fe-O-Mg Melt

Numerical Simulation and Experimental Investigation on Inclusion‐Argon‐Liquid Steel Phenomenon in RH Refining of High‐Manganese and High‐Aluminum Steel

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