Isothermal section at 1100 °c of the Fe-Ni-Ta system

Chengying Tang; Minmin Tong; Honghui Xu; Yong Du; Joonho Lee; Qingrong Yao; Yuehui He; Huaiying Zhou

doi:10.1016/j.jallcom.2010.05.084

Isothermal section at 1100 °c of the Fe-Ni-Ta system

Chengying Tang, Minmin Tong, Honghui Xu, Yong Du, Joonho Lee, Qingrong Yao, Yuehui He, Huaiying Zhou

Department of Materials Science and Engineering

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

2 Citations (Scopus)

Abstract

The isothermal section of the Fe-Ni-Ta system at 1100 °C was constructed using 6 diffusion couples and 10 alloys, the compositions of which were selected on the basis of the experimental results of the (Fe-Ni alloy)/Ta diffusion couples. The samples were examined by means of optical microscopy, scanning electron microscopy, and electron probe microanalysis. Experimental results showed no existence of ternary compounds at 1100 °C. The following five three-phase equilibria were observed: (1) (Ta) + Ta₂Ni + Ta(Fe, Ni), (2) Fe₂Ta + Ta (Fe, Ni) + TaNi₂, (3) Fe₂Ta + TaNi₂ + TaNi₃, (4) Fe₂Ta + TaNi₃ + (Fe, Ni), (5) TaNi₃ + TaNi₈ + (Fe, Ni). The compounds FeTa and NiTa formed continuous solid solution. The solubility of Fe in TaNi₂ and TaNi₃ was determined to be 18 and 7.8 at.%, respectively, while the solubility of Ni in Fe₂Ta was estimated to be 40 at.%.

Original language	English
Pages (from-to)	181-185
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	504
Issue number	1
DOIs	https://doi.org/10.1016/j.jallcom.2010.05.084
Publication status	Published - 2010 Aug 31

Keywords

Diffusion
Electron microprobe
Phase diagrams
Scanning electron microscopy
Ternary alloy systems

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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abstract = "The isothermal section of the Fe-Ni-Ta system at 1100 °C was constructed using 6 diffusion couples and 10 alloys, the compositions of which were selected on the basis of the experimental results of the (Fe-Ni alloy)/Ta diffusion couples. The samples were examined by means of optical microscopy, scanning electron microscopy, and electron probe microanalysis. Experimental results showed no existence of ternary compounds at 1100 °C. The following five three-phase equilibria were observed: (1) (Ta) + Ta2Ni + Ta(Fe, Ni), (2) Fe2Ta + Ta (Fe, Ni) + TaNi2, (3) Fe2Ta + TaNi2 + TaNi3, (4) Fe2Ta + TaNi3 + (Fe, Ni), (5) TaNi3 + TaNi8 + (Fe, Ni). The compounds FeTa and NiTa formed continuous solid solution. The solubility of Fe in TaNi2 and TaNi3 was determined to be 18 and 7.8 at.%, respectively, while the solubility of Ni in Fe2Ta was estimated to be 40 at.%.",

keywords = "Diffusion, Electron microprobe, Phase diagrams, Scanning electron microscopy, Ternary alloy systems",

author = "Chengying Tang and Minmin Tong and Honghui Xu and Yong Du and Joonho Lee and Qingrong Yao and Yuehui He and Huaiying Zhou",

year = "2010",

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doi = "10.1016/j.jallcom.2010.05.084",

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AU - Tang, Chengying

AU - Tong, Minmin

AU - Xu, Honghui

AU - Du, Yong

AU - Lee, Joonho

AU - Yao, Qingrong

AU - He, Yuehui

AU - Zhou, Huaiying

PY - 2010/8/31

Y1 - 2010/8/31

N2 - The isothermal section of the Fe-Ni-Ta system at 1100 °C was constructed using 6 diffusion couples and 10 alloys, the compositions of which were selected on the basis of the experimental results of the (Fe-Ni alloy)/Ta diffusion couples. The samples were examined by means of optical microscopy, scanning electron microscopy, and electron probe microanalysis. Experimental results showed no existence of ternary compounds at 1100 °C. The following five three-phase equilibria were observed: (1) (Ta) + Ta2Ni + Ta(Fe, Ni), (2) Fe2Ta + Ta (Fe, Ni) + TaNi2, (3) Fe2Ta + TaNi2 + TaNi3, (4) Fe2Ta + TaNi3 + (Fe, Ni), (5) TaNi3 + TaNi8 + (Fe, Ni). The compounds FeTa and NiTa formed continuous solid solution. The solubility of Fe in TaNi2 and TaNi3 was determined to be 18 and 7.8 at.%, respectively, while the solubility of Ni in Fe2Ta was estimated to be 40 at.%.

AB - The isothermal section of the Fe-Ni-Ta system at 1100 °C was constructed using 6 diffusion couples and 10 alloys, the compositions of which were selected on the basis of the experimental results of the (Fe-Ni alloy)/Ta diffusion couples. The samples were examined by means of optical microscopy, scanning electron microscopy, and electron probe microanalysis. Experimental results showed no existence of ternary compounds at 1100 °C. The following five three-phase equilibria were observed: (1) (Ta) + Ta2Ni + Ta(Fe, Ni), (2) Fe2Ta + Ta (Fe, Ni) + TaNi2, (3) Fe2Ta + TaNi2 + TaNi3, (4) Fe2Ta + TaNi3 + (Fe, Ni), (5) TaNi3 + TaNi8 + (Fe, Ni). The compounds FeTa and NiTa formed continuous solid solution. The solubility of Fe in TaNi2 and TaNi3 was determined to be 18 and 7.8 at.%, respectively, while the solubility of Ni in Fe2Ta was estimated to be 40 at.%.

KW - Diffusion

KW - Electron microprobe

KW - Phase diagrams

KW - Scanning electron microscopy

KW - Ternary alloy systems

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Isothermal section at 1100 °c of the Fe-Ni-Ta system

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ASJC Scopus subject areas

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