Formation of 2-5 nm size pre-precipitates of cF96 phase in a Hf-Co-Al glassy alloy

D. V. Louzguine; H. Kato; H. S. Kim; A. Inoue

doi:10.1016/S0925-8388(03)00292-5

Formation of 2-5 nm size pre-precipitates of cF96 phase in a Hf-Co-Al glassy alloy

D. V. Louzguine, H. Kato, H. S. Kim, A. Inoue

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

15 Citations (Scopus)

Abstract

The devitrification behaviour of Hf₅₅Co₂₅Al ₂₀ glassy alloy was studied by X-ray diffractometry, transmission electron microscopy, differential scanning and isothermal calorimetry. Formation of a nanoscale structure with a pre-precipitate of the cF96 Ti ₂Ni-type phase embedded in the residual glassy matrix was observed upon annealing. We obtained an Avrami exponent value of 2.6, indicating that the primary pre-precipitates are formed by steady state nucleation and diffusion-controlled growth of nuclei.

Original language	English
Pages (from-to)	198-201
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	359
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(03)00292-5
Publication status	Published - 2003 Sept 22

Keywords

Amorphous materials
Melt spinning
TEM
Thermal analysis
Transition metal alloys

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10.1016/S0925-8388(03)00292-5

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title = "Formation of 2-5 nm size pre-precipitates of cF96 phase in a Hf-Co-Al glassy alloy",

abstract = "The devitrification behaviour of Hf55Co25Al 20 glassy alloy was studied by X-ray diffractometry, transmission electron microscopy, differential scanning and isothermal calorimetry. Formation of a nanoscale structure with a pre-precipitate of the cF96 Ti 2Ni-type phase embedded in the residual glassy matrix was observed upon annealing. We obtained an Avrami exponent value of 2.6, indicating that the primary pre-precipitates are formed by steady state nucleation and diffusion-controlled growth of nuclei.",

keywords = "Amorphous materials, Melt spinning, TEM, Thermal analysis, Transition metal alloys",

author = "Louzguine, {D. V.} and H. Kato and Kim, {H. S.} and A. Inoue",

year = "2003",

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T1 - Formation of 2-5 nm size pre-precipitates of cF96 phase in a Hf-Co-Al glassy alloy

AU - Louzguine, D. V.

AU - Kato, H.

AU - Kim, H. S.

AU - Inoue, A.

PY - 2003/9/22

Y1 - 2003/9/22

N2 - The devitrification behaviour of Hf55Co25Al 20 glassy alloy was studied by X-ray diffractometry, transmission electron microscopy, differential scanning and isothermal calorimetry. Formation of a nanoscale structure with a pre-precipitate of the cF96 Ti 2Ni-type phase embedded in the residual glassy matrix was observed upon annealing. We obtained an Avrami exponent value of 2.6, indicating that the primary pre-precipitates are formed by steady state nucleation and diffusion-controlled growth of nuclei.

AB - The devitrification behaviour of Hf55Co25Al 20 glassy alloy was studied by X-ray diffractometry, transmission electron microscopy, differential scanning and isothermal calorimetry. Formation of a nanoscale structure with a pre-precipitate of the cF96 Ti 2Ni-type phase embedded in the residual glassy matrix was observed upon annealing. We obtained an Avrami exponent value of 2.6, indicating that the primary pre-precipitates are formed by steady state nucleation and diffusion-controlled growth of nuclei.

KW - Amorphous materials

KW - Melt spinning

KW - TEM

KW - Thermal analysis

KW - Transition metal alloys

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SN - 0925-8388

VL - 359

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EP - 201

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Formation of 2-5 nm size pre-precipitates of cF96 phase in a Hf-Co-Al glassy alloy

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Keywords

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