Crystallization accelerated by ultrasound in Pd-based metallic glasses

Tetsu Ichitsubo; Eiichiro Matsubara; Kazuhiro Anazawa; Nobuyuki Nishiyama

doi:10.1016/j.jallcom.2006.08.228

Crystallization accelerated by ultrasound in Pd-based metallic glasses

Tetsu Ichitsubo, Eiichiro Matsubara, Kazuhiro Anazawa, Nobuyuki Nishiyama

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

9 Citations (Scopus)

Abstract

We have investigated the crystallization behavior of Pd₄₀Ni₄₀P₂₀ and Pd_42.5Ni_7.5Cu₃₀P₂₀ bulk metallic glasses under ultrasonic (US) vibrations of MHz frequencies. Both metallic glasses were isothermally annealed at various temperatures under US vibrations, and the duration till the crystallization is completed (crystallization time) under US vibrations is compared with that without US vibrations. In both cases, the crystallization time for the US annealing was found to be much shorter than that without US vibrations. The X-ray diffraction profiles reveal that the crystalline phases obtained after the US annealing are identical to those obtained by the ordinary annealing without vibrations.

Original language	English
Pages (from-to)	194-195
Number of pages	2
Journal	Journal of Alloys and Compounds
Volume	434-435
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jallcom.2006.08.228
Publication status	Published - 2007 May 31

Keywords

Metallic glasses
Phase transitions
Quenching
Rapid solidification
Ultrasonics
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "Crystallization accelerated by ultrasound in Pd-based metallic glasses",

abstract = "We have investigated the crystallization behavior of Pd40Ni40P20 and Pd42.5Ni7.5Cu30P20 bulk metallic glasses under ultrasonic (US) vibrations of MHz frequencies. Both metallic glasses were isothermally annealed at various temperatures under US vibrations, and the duration till the crystallization is completed (crystallization time) under US vibrations is compared with that without US vibrations. In both cases, the crystallization time for the US annealing was found to be much shorter than that without US vibrations. The X-ray diffraction profiles reveal that the crystalline phases obtained after the US annealing are identical to those obtained by the ordinary annealing without vibrations.",

keywords = "Metallic glasses, Phase transitions, Quenching, Rapid solidification, Ultrasonics, X-ray diffraction",

author = "Tetsu Ichitsubo and Eiichiro Matsubara and Kazuhiro Anazawa and Nobuyuki Nishiyama",

note = "Funding Information: This work was partly supported by Grant-in-Aid for Scientific Research on the Priority Area Investigation of “Materials Science of Bulk Metallic Glasses” (No. 15074212) from the Ministry of Education, Science, Sports and Culture, Japan.",

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T1 - Crystallization accelerated by ultrasound in Pd-based metallic glasses

AU - Ichitsubo, Tetsu

AU - Matsubara, Eiichiro

AU - Anazawa, Kazuhiro

AU - Nishiyama, Nobuyuki

N1 - Funding Information: This work was partly supported by Grant-in-Aid for Scientific Research on the Priority Area Investigation of “Materials Science of Bulk Metallic Glasses” (No. 15074212) from the Ministry of Education, Science, Sports and Culture, Japan.

PY - 2007/5/31

Y1 - 2007/5/31

N2 - We have investigated the crystallization behavior of Pd40Ni40P20 and Pd42.5Ni7.5Cu30P20 bulk metallic glasses under ultrasonic (US) vibrations of MHz frequencies. Both metallic glasses were isothermally annealed at various temperatures under US vibrations, and the duration till the crystallization is completed (crystallization time) under US vibrations is compared with that without US vibrations. In both cases, the crystallization time for the US annealing was found to be much shorter than that without US vibrations. The X-ray diffraction profiles reveal that the crystalline phases obtained after the US annealing are identical to those obtained by the ordinary annealing without vibrations.

AB - We have investigated the crystallization behavior of Pd40Ni40P20 and Pd42.5Ni7.5Cu30P20 bulk metallic glasses under ultrasonic (US) vibrations of MHz frequencies. Both metallic glasses were isothermally annealed at various temperatures under US vibrations, and the duration till the crystallization is completed (crystallization time) under US vibrations is compared with that without US vibrations. In both cases, the crystallization time for the US annealing was found to be much shorter than that without US vibrations. The X-ray diffraction profiles reveal that the crystalline phases obtained after the US annealing are identical to those obtained by the ordinary annealing without vibrations.

KW - Metallic glasses

KW - Phase transitions

KW - Quenching

KW - Rapid solidification

KW - Ultrasonics

KW - X-ray diffraction

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