Nanocrystallization kinetics of Ni-based bulk amorphous alloy

F. X. Qin; H. F. Zhang; B. Z. Ding; Z. Q. Hu

doi:10.1016/j.intermet.2004.04.015

Nanocrystallization kinetics of Ni-based bulk amorphous alloy

F. X. Qin, H. F. Zhang, B. Z. Ding, Z. Q. Hu

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article

50 Citations (Scopus)

Abstract

The bulk amorphous alloy Ni₄₅Ti₂₃Zr ₁₅Si₅Pd₁₂ has been prepared by copper mold casting. The crystallization kinetics of the alloy has been investigated using differential scanning calorimetry by means of continuous heating and isothermal annealing, and the products of crystallization have been analyzed by transmission electron microscopy and X-ray diffraction. The isothermal activation energy obtained from Arrhenius equation increases in the process of crystallization transformation. The details of nucleation and growth during the isothermal crystallization are expatiated in terms of local Avrami exponent and local activation energy. Meanwhile, the origins of nanocrystal formation during the annealing process have also been discussed.

Original language	English
Pages (from-to)	1197-1203
Number of pages	7
Journal	Intermetallics
Volume	12
Issue number	10-11 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.intermet.2004.04.015
Publication status	Published - 2004 Oct 1

Keywords

B. Glasses, metallic
B. Thermal stability
C. Rapid solidification processing

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Qin, F. X., Zhang, H. F., Ding, B. Z., & Hu, Z. Q. (2004). Nanocrystallization kinetics of Ni-based bulk amorphous alloy. Intermetallics, 12(10-11 SPEC. ISS.), 1197-1203. https://doi.org/10.1016/j.intermet.2004.04.015

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abstract = "The bulk amorphous alloy Ni45Ti23Zr 15Si5Pd12 has been prepared by copper mold casting. The crystallization kinetics of the alloy has been investigated using differential scanning calorimetry by means of continuous heating and isothermal annealing, and the products of crystallization have been analyzed by transmission electron microscopy and X-ray diffraction. The isothermal activation energy obtained from Arrhenius equation increases in the process of crystallization transformation. The details of nucleation and growth during the isothermal crystallization are expatiated in terms of local Avrami exponent and local activation energy. Meanwhile, the origins of nanocrystal formation during the annealing process have also been discussed.",

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AU - Zhang, H. F.

AU - Ding, B. Z.

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