TY - JOUR
T1 - Phase equilibria in the Ni-Fe-Ga alloy system
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. This work was supported by the Grant-in-Aids for Scientific Research from the Japan Society for the Promotion of Science (JSPS). Support from CREST, the Japan Science and Technology Agency is also acknowledged. 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 - 2008/9/8
Y1 - 2008/9/8
N2 - The phase equilibria, A2/B2 and B2/L21 (or D03) order-disorder transitions and martensitic transformation on the Ni-Fe side of the Ni-Fe-Ga system were examined by electron probe microanalysis (EPMA) and differential scanning calorimetric (DSC) measurement. The equilibrium compositions of interrelations mainly among the α (A2), β (B2), β′ (L21 or D03), γ (A1) and γ′ (L12) phases were determined using diffusion triples which were fabricated by two-step diffusion coupling. It was confirmed that a bcc single-phase region composed of α, β and β′ at 850-1000 °C exists in a wide composition range and that the critical temperature of the B2/L21 order-disorder transformation in the Fe3Ga-Ni3Ga pseudo-binary section gradually increases with increasing Ni content. The existing composition region of the martensite phase at room temperature was also determined by the diffusion triple method.
AB - The phase equilibria, A2/B2 and B2/L21 (or D03) order-disorder transitions and martensitic transformation on the Ni-Fe side of the Ni-Fe-Ga system were examined by electron probe microanalysis (EPMA) and differential scanning calorimetric (DSC) measurement. The equilibrium compositions of interrelations mainly among the α (A2), β (B2), β′ (L21 or D03), γ (A1) and γ′ (L12) phases were determined using diffusion triples which were fabricated by two-step diffusion coupling. It was confirmed that a bcc single-phase region composed of α, β and β′ at 850-1000 °C exists in a wide composition range and that the critical temperature of the B2/L21 order-disorder transformation in the Fe3Ga-Ni3Ga pseudo-binary section gradually increases with increasing Ni content. The existing composition region of the martensite phase at room temperature was also determined by the diffusion triple method.
KW - Intermetallics
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U2 - 10.1016/j.jallcom.2007.09.079
DO - 10.1016/j.jallcom.2007.09.079
M3 - Article
AN - SCOPUS:48949118489
VL - 463
SP - 213
EP - 219
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2
ER -