Metallographic and structural observations in the pseudo-binary section Ni3Si-Ni3Ti of the Ni-Si-Ti system

T. Takasugi; D. Shindo; O. Izumi; M. Hirabayashi

doi:10.1016/0956-7151(90)90025-C

Metallographic and structural observations in the pseudo-binary section Ni₃Si-Ni₃Ti of the Ni-Si-Ti system

T. Takasugi, D. Shindo, O. Izumi, M. Hirabayashi

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

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Abstract

The metallographic and structural features of the alloys in the pseudo-binary section between Ni₃Si (L1₂) and Ni₃Ti (D0₂₄) were investigated. The L1₂ phase (γ′) extended along a pseudo-binary line between the two phases with Ti solubility of about 11 at.%. Also, the L1₂ phase expanded up to about 80 at.% Ni at high Ti concentration. Consistent with previous observations, the addition of the Ti elements into the Ni₃Si alloy led to congruent melting of L1₂ phase. Based on the observations of X-ray diffraction and an electron channeling technique aided with EDX (Energy Dispersive X-ray spectrometer), it was shown that the alloying element, Ti, substituted for the component element of Si the ternary alloy Ni₃(Si, Ti) was highly ordered. The solubility limit of boron in Ni₃(Si, Ti) was shown to be very low, i.e. less than 50 ppm.

Original language	English
Pages (from-to)	739-745
Number of pages	7
Journal	Acta Metallurgica Et Materialia
Volume	38
Issue number	5
DOIs	https://doi.org/10.1016/0956-7151(90)90025-C
Publication status	Published - 1990 May

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Engineering(all)

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10.1016/0956-7151(90)90025-C

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title = "Metallographic and structural observations in the pseudo-binary section Ni3Si-Ni3Ti of the Ni-Si-Ti system",

abstract = "The metallographic and structural features of the alloys in the pseudo-binary section between Ni3Si (L12) and Ni3Ti (D024) were investigated. The L12 phase (γ′) extended along a pseudo-binary line between the two phases with Ti solubility of about 11 at.%. Also, the L12 phase expanded up to about 80 at.% Ni at high Ti concentration. Consistent with previous observations, the addition of the Ti elements into the Ni3Si alloy led to congruent melting of L12 phase. Based on the observations of X-ray diffraction and an electron channeling technique aided with EDX (Energy Dispersive X-ray spectrometer), it was shown that the alloying element, Ti, substituted for the component element of Si the ternary alloy Ni3(Si, Ti) was highly ordered. The solubility limit of boron in Ni3(Si, Ti) was shown to be very low, i.e. less than 50 ppm.",

author = "T. Takasugi and D. Shindo and O. Izumi and M. Hirabayashi",

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T1 - Metallographic and structural observations in the pseudo-binary section Ni3Si-Ni3Ti of the Ni-Si-Ti system

AU - Takasugi, T.

AU - Shindo, D.

AU - Izumi, O.

AU - Hirabayashi, M.

PY - 1990/5

Y1 - 1990/5

N2 - The metallographic and structural features of the alloys in the pseudo-binary section between Ni3Si (L12) and Ni3Ti (D024) were investigated. The L12 phase (γ′) extended along a pseudo-binary line between the two phases with Ti solubility of about 11 at.%. Also, the L12 phase expanded up to about 80 at.% Ni at high Ti concentration. Consistent with previous observations, the addition of the Ti elements into the Ni3Si alloy led to congruent melting of L12 phase. Based on the observations of X-ray diffraction and an electron channeling technique aided with EDX (Energy Dispersive X-ray spectrometer), it was shown that the alloying element, Ti, substituted for the component element of Si the ternary alloy Ni3(Si, Ti) was highly ordered. The solubility limit of boron in Ni3(Si, Ti) was shown to be very low, i.e. less than 50 ppm.

AB - The metallographic and structural features of the alloys in the pseudo-binary section between Ni3Si (L12) and Ni3Ti (D024) were investigated. The L12 phase (γ′) extended along a pseudo-binary line between the two phases with Ti solubility of about 11 at.%. Also, the L12 phase expanded up to about 80 at.% Ni at high Ti concentration. Consistent with previous observations, the addition of the Ti elements into the Ni3Si alloy led to congruent melting of L12 phase. Based on the observations of X-ray diffraction and an electron channeling technique aided with EDX (Energy Dispersive X-ray spectrometer), it was shown that the alloying element, Ti, substituted for the component element of Si the ternary alloy Ni3(Si, Ti) was highly ordered. The solubility limit of boron in Ni3(Si, Ti) was shown to be very low, i.e. less than 50 ppm.

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Metallographic and structural observations in the pseudo-binary section Ni₃Si-Ni₃Ti of the Ni-Si-Ti system

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