Ti deoxidation equilibrium in molten Fe-Ni alloys at temperatures between 1 823 to 1 923 K

Seong Ho Seok; Takahiro Miki; Mitsutaka Hino

doi:10.2355/isijinternational.49.804

Ti deoxidation equilibrium in molten Fe-Ni alloys at temperatures between 1 823 to 1 923 K

Seong Ho Seok, Takahiro Miki, Mitsutaka Hino

ENG - Metallurgy

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

9 Citations (Scopus)

Abstract

Equilibrium relation between Ti and O in molten Fe-Ni alloy has been investigated at 1 873 to 1 923 K. Ti oxide equilibrated with molten Fe-Ni alloy has been determined by EBSD (Electron Backscatter Diffraction) pattern analysis using FE-SEM (Field Emission Scanning Electron Microscope). The present results have been numerically analyzed by the excess Gibbs free energy change of mixing for the Fe-Ni-Ti-O system with Redlich-Kister type polynomial. Redlich-Kister type polynomial parameters concerning Ni and Ti were determined as follows, ⁰Ω_Ni-Ti=424 280-270.407 J/mol (X_Ti<0. 003, 1 823 K≤7≤1 923 K),¹Ω_Ni-Ti=-663 380+313.15T" J/mol (X_Ti<0.003, 1 823 K≤7≤1 923 K).

Original language	English
Pages (from-to)	804-808
Number of pages	5
Journal	Isij International
Volume	49
Issue number	6
DOIs	https://doi.org/10.2355/isijinternational.49.804
Publication status	Published - 2009

Keywords

FE-SEM EBSD analysis
Fe-Ni alloy
Redlich-Kister polynomial
Thermodynamics
Ti deoxidation equilibrium

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.2355/isijinternational.49.804

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@article{e3ae6d595bb04aaab8925e55174e45eb,

title = "Ti deoxidation equilibrium in molten Fe-Ni alloys at temperatures between 1 823 to 1 923 K",

abstract = "Equilibrium relation between Ti and O in molten Fe-Ni alloy has been investigated at 1 873 to 1 923 K. Ti oxide equilibrated with molten Fe-Ni alloy has been determined by EBSD (Electron Backscatter Diffraction) pattern analysis using FE-SEM (Field Emission Scanning Electron Microscope). The present results have been numerically analyzed by the excess Gibbs free energy change of mixing for the Fe-Ni-Ti-O system with Redlich-Kister type polynomial. Redlich-Kister type polynomial parameters concerning Ni and Ti were determined as follows, 0ΩNi-Ti=424 280-270.407 J/mol (XTi<0. 003, 1 823 K≤7≤1 923 K),1ΩNi-Ti=-663 380+313.15T{"} J/mol (XTi<0.003, 1 823 K≤7≤1 923 K).",

keywords = "FE-SEM EBSD analysis, Fe-Ni alloy, Redlich-Kister polynomial, Thermodynamics, Ti deoxidation equilibrium",

author = "Seok, {Seong Ho} and Takahiro Miki and Mitsutaka Hino",

year = "2009",

doi = "10.2355/isijinternational.49.804",

language = "English",

volume = "49",

pages = "804--808",

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

issn = "0915-1559",

publisher = "Iron and Steel Institute of Japan",

number = "6",

}

TY - JOUR

T1 - Ti deoxidation equilibrium in molten Fe-Ni alloys at temperatures between 1 823 to 1 923 K

AU - Seok, Seong Ho

AU - Miki, Takahiro

AU - Hino, Mitsutaka

PY - 2009

Y1 - 2009

N2 - Equilibrium relation between Ti and O in molten Fe-Ni alloy has been investigated at 1 873 to 1 923 K. Ti oxide equilibrated with molten Fe-Ni alloy has been determined by EBSD (Electron Backscatter Diffraction) pattern analysis using FE-SEM (Field Emission Scanning Electron Microscope). The present results have been numerically analyzed by the excess Gibbs free energy change of mixing for the Fe-Ni-Ti-O system with Redlich-Kister type polynomial. Redlich-Kister type polynomial parameters concerning Ni and Ti were determined as follows, 0ΩNi-Ti=424 280-270.407 J/mol (XTi<0. 003, 1 823 K≤7≤1 923 K),1ΩNi-Ti=-663 380+313.15T" J/mol (XTi<0.003, 1 823 K≤7≤1 923 K).

AB - Equilibrium relation between Ti and O in molten Fe-Ni alloy has been investigated at 1 873 to 1 923 K. Ti oxide equilibrated with molten Fe-Ni alloy has been determined by EBSD (Electron Backscatter Diffraction) pattern analysis using FE-SEM (Field Emission Scanning Electron Microscope). The present results have been numerically analyzed by the excess Gibbs free energy change of mixing for the Fe-Ni-Ti-O system with Redlich-Kister type polynomial. Redlich-Kister type polynomial parameters concerning Ni and Ti were determined as follows, 0ΩNi-Ti=424 280-270.407 J/mol (XTi<0. 003, 1 823 K≤7≤1 923 K),1ΩNi-Ti=-663 380+313.15T" J/mol (XTi<0.003, 1 823 K≤7≤1 923 K).

KW - FE-SEM EBSD analysis

KW - Fe-Ni alloy

KW - Redlich-Kister polynomial

KW - Thermodynamics

KW - Ti deoxidation equilibrium

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U2 - 10.2355/isijinternational.49.804

DO - 10.2355/isijinternational.49.804

M3 - Article

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SN - 0915-1559

VL - 49

SP - 804

EP - 808

JO - Transactions of the Iron and Steel Institute of Japan

JF - Transactions of the Iron and Steel Institute of Japan

IS - 6

ER -

Ti deoxidation equilibrium in molten Fe-Ni alloys at temperatures between 1 823 to 1 923 K

Abstract

Keywords

ASJC Scopus subject areas

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