Aluminum Deoxidation Equilibrium of Molten Iron–Aluminum Alloy with Wide Aluminum Composition Range at 1 873 K

Kang, Youngjo; Thunman, Mikael; Sichen, Du; Morohoshi, Takashi; Mizukami, Kazumi; Morita, Kazuki

doi:10.2355/isijinternational.49.1483

Cited by 56 publications

(49 citation statements)

References 11 publications

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“…(8) were reassessed by Itoh et al, 29) Fujiwara et al 30) and Kang et al. 31) Ca-O equilibrium constants of Eq. (10) were experimental determined by Cho et al 32) and Itoh et al 33) Therefore thermodynamic data have been altered to see if Fig.…”

Section: Rate Constant Of Nitrogen Removal Reactionmentioning

confidence: 99%

Effect of Changes in Sulfur and Oxygen Concentration on Change in Nitrogen Concentration in Liquid Steel during CaO^|^ndash;CaSi Powder Blowing under Reduced Pressure

Numata¹,

Higuchi²

2012

ISIJ Int.

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In this paper, 1 500 kg scale experiments of CaSi mixed CaO powder top blowing onto the Al killed steel were carried out under reduced pressure. And the effects of CaSi alloy ratio in the mixture on reactions of desulfurization and nitrogen removal were examined. Aluminum decreasing rate decreased and rate constant of desulfurization and nitrogen removal increased with increasing CaSi mixing ratio to flux. It is supposed from the above that deoxidation and desulfurization reaction can simultaneously occur by blowing the mixture of CaSi and CaO powder and the effect of calcium mixing powder on desulfurization can be explained by promotion of CaO desulfurization and CaS formation. It is suggested that lower oxygen and sulfur activity due to reaction between molten steel and powder with CaSi increased rate constant of nitrogen removal.

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Section: Rate Constant Of Nitrogen Removal Reactionmentioning

confidence: 99%

Effect of Changes in Sulfur and Oxygen Concentration on Change in Nitrogen Concentration in Liquid Steel during CaO^|^ndash;CaSi Powder Blowing under Reduced Pressure

Numata¹,

Higuchi²

2012

ISIJ Int.

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“…(11) and (12). Interaction parameters reported in literature 3,12) are employed for the solving the equations.…”

Section: (10)mentioning

confidence: 99%

“…(11) and (12). Interaction parameters reported in literature 3,12) are employed for the solving the equations. In the above equations, e i j is the interaction parameter of j on i in molten iron, and r i j is the second order interaction parameter.…”

Section: (10)mentioning

confidence: 99%

Measurement of Interaction Parameter between Cu and Al in Molten High Al Steel

et al. 2017

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“…The behavior of oxygen in liquid iron is relatively well understood and quantified, as is the behavior of aluminum in iron. Even though the Gibbs Energy of formation of the aluminum oxides is also well established , the understanding of the Al-Fe-O equilibrium in liquid steel has been studied in detail since at least 1950 [6] until the last decade [7] and considerable controversy still prevails. Two of the reasons is that the measurement of the Al-Fe-O equilibria at steelmaking temperatures involves extremely low oxygen potentials and difficulties in the chemical analysis of the true content of oxygen dissolved in the alloy [8].…”

Section: Introductionmentioning

confidence: 99%

Desoxidação Do Ferro Por Alumínio: Uma Breve Revisão Dos Dados Experimentais E Descrições Termodinâmicas

Silva¹,

Avillez²,

Neto³

2018

ABM Proceedings

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ResumoO sistema ferro-oxigênio alumino tem sido investigado há muitos anos em função de sua importância para a indústria do aço. Uma grande fração de todo o aço plano produzido é de aço de baixo carbono acalmado ao alumínio, não apenas pelo baixo conteúdo de oxigênio residual em solução que pode ser obtido mas, também, pela importância do alumínio residual na formação de AlN, ferramenta importante no controle de estrutura e textura obtidas. O sistema Fe-O é relativamente bem compreendido e quantificado, da mesma forma que o sistema Fe-Al. Entretanto, há discrepâncias significativas na quantificação do comportamento do sistema Fe-Al-O havendo, ainda, bastante controvérsia com respeito a equilíbrios importantes. Assim, o objetivo deste trabalho é (a) realizar uma revisão crítica dos experimentos e avaliações termodinâmicas principalmente do equilíbrio Al-Fe-O-Al2O3 (b) avaliar os métodos atualmente usados para descrever este equilíbrio e (c) apresentar recomendações sobre os dados, com base em sua confiabilidade e consistência. Palavras-chave: Aço; Desoxidação; Sistema Fe-Al-O; Termodinâmica, CALPHAD LIQUID IRON DEOXIDATION BY ALUMINUM: A BRIEF REVIEW OF EXPERIMENTAL DATA AND THERMODYNAMIC DESCRIPTION AbstractThe iron-oxygen-aluminum equilibrium has been a subject of interest for many years for its importance in the steel industry. A great percentage of all flat rolled steel is aluminum killed "AK" (deoxidized) low-carbon steel, not only because of the low soluble oxygen contents that can be achieved but also because of the importance of the residual aluminum in forming aluminum nitride that is one of the main tools used to achieve crystallographic texture adequate for forming. The behavior of oxygen in liquid iron is relatively well understood and quantified, as is the behavior of aluminum in iron. Nonetheless, the Fe-Al-O system is not fully understood and considerable controversy still prevails. Thus, the objectives of this work is (a) to critically review the experimental work and assessments performed mainly of the Al-Fe-O-Al2O3 equilibrium, (b) to evaluate the current models used to describe this equilibrium and (c) to present a recommendation of the data, based on its reliability and consistency.

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Aluminum Deoxidation Equilibrium of Molten Iron–Aluminum Alloy with Wide Aluminum Composition Range at 1 873 K

Cited by 56 publications

References 11 publications

Effect of Changes in Sulfur and Oxygen Concentration on Change in Nitrogen Concentration in Liquid Steel during CaO^|^ndash;CaSi Powder Blowing under Reduced Pressure

Effect of Changes in Sulfur and Oxygen Concentration on Change in Nitrogen Concentration in Liquid Steel during CaO^|^ndash;CaSi Powder Blowing under Reduced Pressure

Measurement of Interaction Parameter between Cu and Al in Molten High Al Steel

Desoxidação Do Ferro Por Alumínio: Uma Breve Revisão Dos Dados Experimentais E Descrições Termodinâmicas

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