Solubility products of VS and NbS in iron alloys

Katsunari Oikawa; Tomoyuki Sasaki; Hajime Mitsui; Kiyohito Ishida

doi:10.2355/isijinternational.49.942

Solubility products of VS and NbS in iron alloys

Katsunari Oikawa, Tomoyuki Sasaki, Hajime Mitsui, Kiyohito Ishida

ENG - Metallurgy

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Solubility of sulfur in Fe-V and Fe-Nb alloys was experimentally determined using a diffusion couple technique. Solubility product of VS and NbS in ferrite (α) and austenite (γ) phases were determined as log(mass%V)(mass%S)α=4.76-10100/T, log(mass%V)(mass%S)γ=4.90-11 000/T and log(mass%Nb)(mass%S)γ=4.70-10 500/T in the temperature range from 1 523 to 1 573 K. A thermodynamic analysis was also carried out to evaluate the formation energy of VS and NbS. The estimated formation energy of VS and NbS are δG_VS^sulfide=-263 100+61.0T (J/mol) and δG_Nbs^sulfide=-260 800+68.4T (J/mol), respectively.

Original language	English
Pages (from-to)	942-946
Number of pages	5
Journal	Isij International
Volume	49
Issue number	7
DOIs	https://doi.org/10.2355/isijinternational.49.942
Publication status	Published - 2009

Keywords

Microalloying steels
Niobium sulfide
Solubility of sulfur
Thermodynamic analysis
Vanadium sulfide

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.2355/isijinternational.49.942

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title = "Solubility products of VS and NbS in iron alloys",

abstract = "Solubility of sulfur in Fe-V and Fe-Nb alloys was experimentally determined using a diffusion couple technique. Solubility product of VS and NbS in ferrite (α) and austenite (γ) phases were determined as log(mass%V)(mass%S)α=4.76-10100/T, log(mass%V)(mass%S)γ=4.90-11 000/T and log(mass%Nb)(mass%S)γ=4.70-10 500/T in the temperature range from 1 523 to 1 573 K. A thermodynamic analysis was also carried out to evaluate the formation energy of VS and NbS. The estimated formation energy of VS and NbS are δGVSsulfide=-263 100+61.0T (J/mol) and δGNbssulfide=-260 800+68.4T (J/mol), respectively.",

keywords = "Microalloying steels, Niobium sulfide, Solubility of sulfur, Thermodynamic analysis, Vanadium sulfide",

author = "Katsunari Oikawa and Tomoyuki Sasaki and Hajime Mitsui and Kiyohito Ishida",

year = "2009",

doi = "10.2355/isijinternational.49.942",

language = "English",

volume = "49",

pages = "942--946",

journal = "Transactions of the Iron and Steel Institute of Japan",

issn = "0915-1559",

publisher = "Iron and Steel Institute of Japan",

number = "7",

}

TY - JOUR

T1 - Solubility products of VS and NbS in iron alloys

AU - Oikawa, Katsunari

AU - Sasaki, Tomoyuki

AU - Mitsui, Hajime

AU - Ishida, Kiyohito

PY - 2009

Y1 - 2009

N2 - Solubility of sulfur in Fe-V and Fe-Nb alloys was experimentally determined using a diffusion couple technique. Solubility product of VS and NbS in ferrite (α) and austenite (γ) phases were determined as log(mass%V)(mass%S)α=4.76-10100/T, log(mass%V)(mass%S)γ=4.90-11 000/T and log(mass%Nb)(mass%S)γ=4.70-10 500/T in the temperature range from 1 523 to 1 573 K. A thermodynamic analysis was also carried out to evaluate the formation energy of VS and NbS. The estimated formation energy of VS and NbS are δGVSsulfide=-263 100+61.0T (J/mol) and δGNbssulfide=-260 800+68.4T (J/mol), respectively.

AB - Solubility of sulfur in Fe-V and Fe-Nb alloys was experimentally determined using a diffusion couple technique. Solubility product of VS and NbS in ferrite (α) and austenite (γ) phases were determined as log(mass%V)(mass%S)α=4.76-10100/T, log(mass%V)(mass%S)γ=4.90-11 000/T and log(mass%Nb)(mass%S)γ=4.70-10 500/T in the temperature range from 1 523 to 1 573 K. A thermodynamic analysis was also carried out to evaluate the formation energy of VS and NbS. The estimated formation energy of VS and NbS are δGVSsulfide=-263 100+61.0T (J/mol) and δGNbssulfide=-260 800+68.4T (J/mol), respectively.

KW - Microalloying steels

KW - Niobium sulfide

KW - Solubility of sulfur

KW - Thermodynamic analysis

KW - Vanadium sulfide

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JO - Transactions of the Iron and Steel Institute of Japan

JF - Transactions of the Iron and Steel Institute of Japan

IS - 7

ER -

Solubility products of VS and NbS in iron alloys

Abstract

Keywords

ASJC Scopus subject areas

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