Crystallization kinetics in a Ni24Zr76 amorphous alloy

G. Ghosh; F. R. Chen

Crystallization kinetics in a Ni₂₄Zr₇₆ amorphous alloy

G. Ghosh^*, F. R. Chen

^*Corresponding author for this work

Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Isothermal crystallization kinetics of Ni₂₄Zr₇₆ amorphous alloy has been studied by differential scanning calorimetry (DSC). Theoretically estimated transient times are found to be consistent with the experimentally observed incubation periods. The crystallization kinetics has been analyzed in terms of Kolmogorov-Johnson-Mehl-Avrami (KJMA) model and significant departure from the linear KJMA behavior was observed. Such non-linearity is due to the surface-induced crystallization, anisotropic growth of the crystals, impingement effects and variation of the nucleation rate during crystallization etc. By applying high-resolution electron microscopy (HREM), it has been shown that the nucleation and growth of the crystals do not take place at a constant state of disorder.

Original language	English (US)
Title of host publication	Crystallization and Related Phenomena in Amorphous Materials
Editors	Matthew Libera, Tony E. Haynes, Peggy Cebe, James E. Dickinson Jr.
Publisher	Publ by Materials Research Society
Pages	289-294
Number of pages	6
Volume	321
ISBN (Print)	1558992200
State	Published - Jan 1 1994
Event	Proceedings of the 1993 Fall Meeting of the Materials Research Society - Boston, MA, USA Duration: Nov 29 1993 → Dec 2 1993

Other

Other	Proceedings of the 1993 Fall Meeting of the Materials Research Society
City	Boston, MA, USA
Period	11/29/93 → 12/2/93

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Crystallization kinetics in a Ni24Zr76 amorphous alloy",

abstract = "Isothermal crystallization kinetics of Ni24Zr76 amorphous alloy has been studied by differential scanning calorimetry (DSC). Theoretically estimated transient times are found to be consistent with the experimentally observed incubation periods. The crystallization kinetics has been analyzed in terms of Kolmogorov-Johnson-Mehl-Avrami (KJMA) model and significant departure from the linear KJMA behavior was observed. Such non-linearity is due to the surface-induced crystallization, anisotropic growth of the crystals, impingement effects and variation of the nucleation rate during crystallization etc. By applying high-resolution electron microscopy (HREM), it has been shown that the nucleation and growth of the crystals do not take place at a constant state of disorder.",

author = "G. Ghosh and Chen, {F. R.}",

year = "1994",

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volume = "321",

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booktitle = "Crystallization and Related Phenomena in Amorphous Materials",

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note = "Proceedings of the 1993 Fall Meeting of the Materials Research Society ; Conference date: 29-11-1993 Through 02-12-1993",

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T1 - Crystallization kinetics in a Ni24Zr76 amorphous alloy

AU - Ghosh, G.

AU - Chen, F. R.

PY - 1994/1/1

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N2 - Isothermal crystallization kinetics of Ni24Zr76 amorphous alloy has been studied by differential scanning calorimetry (DSC). Theoretically estimated transient times are found to be consistent with the experimentally observed incubation periods. The crystallization kinetics has been analyzed in terms of Kolmogorov-Johnson-Mehl-Avrami (KJMA) model and significant departure from the linear KJMA behavior was observed. Such non-linearity is due to the surface-induced crystallization, anisotropic growth of the crystals, impingement effects and variation of the nucleation rate during crystallization etc. By applying high-resolution electron microscopy (HREM), it has been shown that the nucleation and growth of the crystals do not take place at a constant state of disorder.

AB - Isothermal crystallization kinetics of Ni24Zr76 amorphous alloy has been studied by differential scanning calorimetry (DSC). Theoretically estimated transient times are found to be consistent with the experimentally observed incubation periods. The crystallization kinetics has been analyzed in terms of Kolmogorov-Johnson-Mehl-Avrami (KJMA) model and significant departure from the linear KJMA behavior was observed. Such non-linearity is due to the surface-induced crystallization, anisotropic growth of the crystals, impingement effects and variation of the nucleation rate during crystallization etc. By applying high-resolution electron microscopy (HREM), it has been shown that the nucleation and growth of the crystals do not take place at a constant state of disorder.

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AN - SCOPUS:0028204623

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VL - 321

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BT - Crystallization and Related Phenomena in Amorphous Materials

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A2 - Haynes, Tony E.

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A2 - Dickinson Jr., James E.

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T2 - Proceedings of the 1993 Fall Meeting of the Materials Research Society

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