The effect of Zr addition in glass forming ability of Ni-Nb alloy system

H. J. Chang; E. S. Park; Y. S. Jung; M. K. Kim; D. H. Kim

doi:10.1016/j.jallcom.2006.08.292

The effect of Zr addition in glass forming ability of Ni-Nb alloy system

H. J. Chang, E. S. Park, Y. S. Jung, M. K. Kim, D. H. Kim

Department of Materials Science and Engineering

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

35 Citations (Scopus)

Abstract

The effect of Zr addition on glass forming ability (GFA) of Ni-Nb alloys has been investigated. Ni₆₀Nb_40-xZr_x (x = 0-40) alloys were prepared by melt-spinning and injection-casting. Crystallization behavior of the alloys was studied by differential scanning calorimetry (DSC), differential thermal analyzer (DTA) and X-ray diffractometry (XRD). The GFA increased with the addition of Zr, thus, a rod with the diameter of 2 mm was obtained in Ni₆₀Nb₃₀Zr₁₀ which has the highest reduced glass transition T_rg value of 0.619 among the alloys investigated. When Zr content is more than 10 at.%, the GFA deteriorated significantly. The atomic structure of Ni-Nb-Zr alloys investigated by means of extended X-ray absorption fine structure (EXAFS), indicated presence of chemical inhomogeneity in the amorphous structure due to the positive mixing enthalpy between Zr and Nb.

Original language	English
Pages (from-to)	156-159
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	434-435
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jallcom.2006.08.292
Publication status	Published - 2007 May 31

Bibliographical note

Funding Information:
This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology. We are grateful to authorities concerned of Pohang Light Source (PLS) for XAS measurements.

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2006.08.292

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title = "The effect of Zr addition in glass forming ability of Ni-Nb alloy system",

abstract = "The effect of Zr addition on glass forming ability (GFA) of Ni-Nb alloys has been investigated. Ni60Nb40-xZrx (x = 0-40) alloys were prepared by melt-spinning and injection-casting. Crystallization behavior of the alloys was studied by differential scanning calorimetry (DSC), differential thermal analyzer (DTA) and X-ray diffractometry (XRD). The GFA increased with the addition of Zr, thus, a rod with the diameter of 2 mm was obtained in Ni60Nb30Zr10 which has the highest reduced glass transition Trg value of 0.619 among the alloys investigated. When Zr content is more than 10 at.%, the GFA deteriorated significantly. The atomic structure of Ni-Nb-Zr alloys investigated by means of extended X-ray absorption fine structure (EXAFS), indicated presence of chemical inhomogeneity in the amorphous structure due to the positive mixing enthalpy between Zr and Nb.",

author = "Chang, {H. J.} and Park, {E. S.} and Jung, {Y. S.} and Kim, {M. K.} and Kim, {D. H.}",

note = "Funding Information: This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology. We are grateful to authorities concerned of Pohang Light Source (PLS) for XAS measurements.",

year = "2007",

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doi = "10.1016/j.jallcom.2006.08.292",

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AU - Chang, H. J.

AU - Park, E. S.

AU - Jung, Y. S.

AU - Kim, M. K.

AU - Kim, D. H.

N1 - Funding Information: This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology. We are grateful to authorities concerned of Pohang Light Source (PLS) for XAS measurements.

PY - 2007/5/31

Y1 - 2007/5/31

N2 - The effect of Zr addition on glass forming ability (GFA) of Ni-Nb alloys has been investigated. Ni60Nb40-xZrx (x = 0-40) alloys were prepared by melt-spinning and injection-casting. Crystallization behavior of the alloys was studied by differential scanning calorimetry (DSC), differential thermal analyzer (DTA) and X-ray diffractometry (XRD). The GFA increased with the addition of Zr, thus, a rod with the diameter of 2 mm was obtained in Ni60Nb30Zr10 which has the highest reduced glass transition Trg value of 0.619 among the alloys investigated. When Zr content is more than 10 at.%, the GFA deteriorated significantly. The atomic structure of Ni-Nb-Zr alloys investigated by means of extended X-ray absorption fine structure (EXAFS), indicated presence of chemical inhomogeneity in the amorphous structure due to the positive mixing enthalpy between Zr and Nb.

AB - The effect of Zr addition on glass forming ability (GFA) of Ni-Nb alloys has been investigated. Ni60Nb40-xZrx (x = 0-40) alloys were prepared by melt-spinning and injection-casting. Crystallization behavior of the alloys was studied by differential scanning calorimetry (DSC), differential thermal analyzer (DTA) and X-ray diffractometry (XRD). The GFA increased with the addition of Zr, thus, a rod with the diameter of 2 mm was obtained in Ni60Nb30Zr10 which has the highest reduced glass transition Trg value of 0.619 among the alloys investigated. When Zr content is more than 10 at.%, the GFA deteriorated significantly. The atomic structure of Ni-Nb-Zr alloys investigated by means of extended X-ray absorption fine structure (EXAFS), indicated presence of chemical inhomogeneity in the amorphous structure due to the positive mixing enthalpy between Zr and Nb.

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The effect of Zr addition in glass forming ability of Ni-Nb alloy system

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