Phase equilibria in the Ni-Co-Ga alloy system

R. Ducher; R. Kainuma; K. Ishida

doi:10.1016/j.jallcom.2007.11.103

Phase equilibria in the Ni-Co-Ga alloy system

R. Ducher, R. Kainuma, K. Ishida

ENG - Metallurgy

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

12 Citations (Scopus)

Abstract

Phase equilibria among the α (A1), α′ (L1₂), β (B2), δ (Ni₅Ga₃) and ε (Ni₁₃Ga₉) phases at elevated temperatures and the existing composition region of the martensite phase at room temperature in the Ni-Co side of the Ni-Co-Ga system were examined by electron probe microanalysis (EPMA) using diffusion triples which were fabricated by two-step diffusion coupling. It was confirmed that single-phase regions of the α, α′ and β phases at 700 and 1000 °C exist in a wide composition range parallel to Ni-Co section and that the existing region of the martensite phase at room temperature is also located over a wide range in the β phase along the β + α (or α′) two-phase region.

Original language	English
Pages (from-to)	208-213
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	466
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.11.103
Publication status	Published - 2008 Oct 20

Keywords

Intermetallics
Metals

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "Phase equilibria in the Ni-Co-Ga alloy system",

abstract = "Phase equilibria among the α (A1), α′ (L12), β (B2), δ (Ni5Ga3) and ε (Ni13Ga9) phases at elevated temperatures and the existing composition region of the martensite phase at room temperature in the Ni-Co side of the Ni-Co-Ga system were examined by electron probe microanalysis (EPMA) using diffusion triples which were fabricated by two-step diffusion coupling. It was confirmed that single-phase regions of the α, α′ and β phases at 700 and 1000 °C exist in a wide composition range parallel to Ni-Co section and that the existing region of the martensite phase at room temperature is also located over a wide range in the β phase along the β + α (or α′) two-phase region.",

keywords = "Intermetallics, Metals",

author = "R. Ducher and R. Kainuma and K. Ishida",

note = "Funding Information: The authors wish to thank Drs. K. Kobayashi and N. Kamiya of Tohoku University for their help with the EPMA examination. The present study was supported by a Grant-in-Aid from CREST, Japan Science and Technology Agency (JST), Grant-in-Aids for Scientific Research from the Japan Society for the Promotion of Science (JSPS), Japan, and the Global COE Project. R.D. acknowledges support by the Grant-in-Aids Lavoisier from the French Ministry of Foreign Affairs. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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AU - Ducher, R.

AU - Kainuma, R.

AU - Ishida, K.

N1 - Funding Information: The authors wish to thank Drs. K. Kobayashi and N. Kamiya of Tohoku University for their help with the EPMA examination. The present study was supported by a Grant-in-Aid from CREST, Japan Science and Technology Agency (JST), Grant-in-Aids for Scientific Research from the Japan Society for the Promotion of Science (JSPS), Japan, and the Global COE Project. R.D. acknowledges support by the Grant-in-Aids Lavoisier from the French Ministry of Foreign Affairs. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2008/10/20

Y1 - 2008/10/20

N2 - Phase equilibria among the α (A1), α′ (L12), β (B2), δ (Ni5Ga3) and ε (Ni13Ga9) phases at elevated temperatures and the existing composition region of the martensite phase at room temperature in the Ni-Co side of the Ni-Co-Ga system were examined by electron probe microanalysis (EPMA) using diffusion triples which were fabricated by two-step diffusion coupling. It was confirmed that single-phase regions of the α, α′ and β phases at 700 and 1000 °C exist in a wide composition range parallel to Ni-Co section and that the existing region of the martensite phase at room temperature is also located over a wide range in the β phase along the β + α (or α′) two-phase region.

AB - Phase equilibria among the α (A1), α′ (L12), β (B2), δ (Ni5Ga3) and ε (Ni13Ga9) phases at elevated temperatures and the existing composition region of the martensite phase at room temperature in the Ni-Co side of the Ni-Co-Ga system were examined by electron probe microanalysis (EPMA) using diffusion triples which were fabricated by two-step diffusion coupling. It was confirmed that single-phase regions of the α, α′ and β phases at 700 and 1000 °C exist in a wide composition range parallel to Ni-Co section and that the existing region of the martensite phase at room temperature is also located over a wide range in the β phase along the β + α (or α′) two-phase region.

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KW - Metals

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