Diffusion and atomic mobility of BCC Ti-Al-Nb alloys: Experimental determination and computational modeling

Yuanyu Gu; Fujun Fan; Yanhua Guo; Guanglong Xu; Hui Chang; Lian Zhou; Yuwen Cui

doi:10.1016/j.calphad.2018.05.008

Diffusion and atomic mobility of BCC Ti-Al-Nb alloys: Experimental determination and computational modeling

Yuanyu Gu, Fujun Fan, Yanhua Guo, Guanglong Xu, Hui Chang, Lian Zhou, Yuwen Cui

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Abstract

Diffusion behavior in BCC Ti-Al-Nb ternary alloys was investigated at 1473 K by the experimental solid-state diffusion couple technique. The extraction of inter- and impurity diffusion coefficients, by the Whittle-Green and generalized Hall methods respectively, enables the diffusion properties of BCC Ti-Al-Nb alloys to be constructed at the Ti-rich corner. The determined diffusion data, together with those from the literature, have been thoroughly evaluated and then assessed to develop the atomic mobility for the BCC Ti-Al-Nb ternary alloys. The validated mobility parameters have been applied to predict a full diffusion picture of the Ti-Al-Nb BCC alloys and interesting interdiffusion behavior of the diffusion experiments.

Original language	English
Pages (from-to)	83-91
Number of pages	9
Journal	Calphad: Computer Coupling of Phase Diagrams and Thermochemistry
Volume	62
DOIs	https://doi.org/10.1016/j.calphad.2018.05.008
State	Published - Sep 2018
Externally published	Yes

Keywords

DICTRA modeling
Diffusion
Diffusion mobility
Generalized Hall method
Ti-Al-Nb ternary alloys
Whittle-Green

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10.1016/j.calphad.2018.05.008

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title = "Diffusion and atomic mobility of BCC Ti-Al-Nb alloys: Experimental determination and computational modeling",

abstract = "Diffusion behavior in BCC Ti-Al-Nb ternary alloys was investigated at 1473 K by the experimental solid-state diffusion couple technique. The extraction of inter- and impurity diffusion coefficients, by the Whittle-Green and generalized Hall methods respectively, enables the diffusion properties of BCC Ti-Al-Nb alloys to be constructed at the Ti-rich corner. The determined diffusion data, together with those from the literature, have been thoroughly evaluated and then assessed to develop the atomic mobility for the BCC Ti-Al-Nb ternary alloys. The validated mobility parameters have been applied to predict a full diffusion picture of the Ti-Al-Nb BCC alloys and interesting interdiffusion behavior of the diffusion experiments.",

keywords = "DICTRA modeling, Diffusion, Diffusion mobility, Generalized Hall method, Ti-Al-Nb ternary alloys, Whittle-Green",

author = "Yuanyu Gu and Fujun Fan and Yanhua Guo and Guanglong Xu and Hui Chang and Lian Zhou and Yuwen Cui",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = sep,

doi = "10.1016/j.calphad.2018.05.008",

language = "英语",

volume = "62",

pages = "83--91",

journal = "Calphad: Computer Coupling of Phase Diagrams and Thermochemistry",

issn = "0364-5916",

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TY - JOUR

T1 - Diffusion and atomic mobility of BCC Ti-Al-Nb alloys

T2 - Experimental determination and computational modeling

AU - Gu, Yuanyu

AU - Fan, Fujun

AU - Guo, Yanhua

AU - Xu, Guanglong

AU - Chang, Hui

AU - Zhou, Lian

AU - Cui, Yuwen

PY - 2018/9

Y1 - 2018/9

N2 - Diffusion behavior in BCC Ti-Al-Nb ternary alloys was investigated at 1473 K by the experimental solid-state diffusion couple technique. The extraction of inter- and impurity diffusion coefficients, by the Whittle-Green and generalized Hall methods respectively, enables the diffusion properties of BCC Ti-Al-Nb alloys to be constructed at the Ti-rich corner. The determined diffusion data, together with those from the literature, have been thoroughly evaluated and then assessed to develop the atomic mobility for the BCC Ti-Al-Nb ternary alloys. The validated mobility parameters have been applied to predict a full diffusion picture of the Ti-Al-Nb BCC alloys and interesting interdiffusion behavior of the diffusion experiments.

AB - Diffusion behavior in BCC Ti-Al-Nb ternary alloys was investigated at 1473 K by the experimental solid-state diffusion couple technique. The extraction of inter- and impurity diffusion coefficients, by the Whittle-Green and generalized Hall methods respectively, enables the diffusion properties of BCC Ti-Al-Nb alloys to be constructed at the Ti-rich corner. The determined diffusion data, together with those from the literature, have been thoroughly evaluated and then assessed to develop the atomic mobility for the BCC Ti-Al-Nb ternary alloys. The validated mobility parameters have been applied to predict a full diffusion picture of the Ti-Al-Nb BCC alloys and interesting interdiffusion behavior of the diffusion experiments.

KW - DICTRA modeling

KW - Diffusion

KW - Diffusion mobility

KW - Generalized Hall method

KW - Ti-Al-Nb ternary alloys

KW - Whittle-Green

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U2 - 10.1016/j.calphad.2018.05.008

DO - 10.1016/j.calphad.2018.05.008

M3 - 文章

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SN - 0364-5916

VL - 62

SP - 83

EP - 91

JO - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry

JF - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry

ER -

Diffusion and atomic mobility of BCC Ti-Al-Nb alloys: Experimental determination and computational modeling

Abstract

Keywords

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