Undercooling solidification behavior and bulk amorphous formation of la 55Al 25Cu 10Ni 5Co 5 alloys with SiC whisker addition

Shuji Azumo, Katsuhisa Nagayama

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

It is reported that La-Al-Transition Metal alloys have high undercooled melt formation and high bulk amorphous formation ability by using rapid solidification process. We have examined the undercooling solidification and remarkable nucleation control behavior with adding SiC whisker by using containerless process. In this study, we investigated the undercooling, nucleation behavior and bulk amorphous formation for La 55Al 23Cu 10Ni 5Co 5 samples and samples with SiC whisker addition which are levitated and solidified by using the new gas jet flow and high cooling type electromagnetic levitation system. Therefore, the nucleation was controlled and the high undercooling degree, ΔT(= 0.22-0.28T m), was obtained with increasing SiC whisker addition. In addition, the bulk amorphous sample, φ7 mm sphere, was obtained at the cooling rate of levitating melt and solidification, about 100 K/s, for sample with 0.2% or more SiC whisker addition.

Original languageEnglish
Pages (from-to)399-401
Number of pages3
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume69
Issue number4
DOIs
Publication statusPublished - 2005 Apr

Fingerprint

Undercooling
supercooling
solidification
Solidification
Nucleation
nucleation
Transition metal alloys
Cooling
Rapid solidification
cooling
magnetic suspension
rapid solidification
gas jets
jet flow
Gases
transition metals

Keywords

  • Bulk amorphous
  • Containerless process
  • Gas jet flow type levitation apparatus
  • High undercooling degree
  • La Al Cu Ni Co alloy

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

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title = "Undercooling solidification behavior and bulk amorphous formation of la 55Al 25Cu 10Ni 5Co 5 alloys with SiC whisker addition",
abstract = "It is reported that La-Al-Transition Metal alloys have high undercooled melt formation and high bulk amorphous formation ability by using rapid solidification process. We have examined the undercooling solidification and remarkable nucleation control behavior with adding SiC whisker by using containerless process. In this study, we investigated the undercooling, nucleation behavior and bulk amorphous formation for La 55Al 23Cu 10Ni 5Co 5 samples and samples with SiC whisker addition which are levitated and solidified by using the new gas jet flow and high cooling type electromagnetic levitation system. Therefore, the nucleation was controlled and the high undercooling degree, ΔT(= 0.22-0.28T m), was obtained with increasing SiC whisker addition. In addition, the bulk amorphous sample, φ7 mm sphere, was obtained at the cooling rate of levitating melt and solidification, about 100 K/s, for sample with 0.2{\%} or more SiC whisker addition.",
keywords = "Bulk amorphous, Containerless process, Gas jet flow type levitation apparatus, High undercooling degree, La Al Cu Ni Co alloy",
author = "Shuji Azumo and Katsuhisa Nagayama",
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T1 - Undercooling solidification behavior and bulk amorphous formation of la 55Al 25Cu 10Ni 5Co 5 alloys with SiC whisker addition

AU - Azumo, Shuji

AU - Nagayama, Katsuhisa

PY - 2005/4

Y1 - 2005/4

N2 - It is reported that La-Al-Transition Metal alloys have high undercooled melt formation and high bulk amorphous formation ability by using rapid solidification process. We have examined the undercooling solidification and remarkable nucleation control behavior with adding SiC whisker by using containerless process. In this study, we investigated the undercooling, nucleation behavior and bulk amorphous formation for La 55Al 23Cu 10Ni 5Co 5 samples and samples with SiC whisker addition which are levitated and solidified by using the new gas jet flow and high cooling type electromagnetic levitation system. Therefore, the nucleation was controlled and the high undercooling degree, ΔT(= 0.22-0.28T m), was obtained with increasing SiC whisker addition. In addition, the bulk amorphous sample, φ7 mm sphere, was obtained at the cooling rate of levitating melt and solidification, about 100 K/s, for sample with 0.2% or more SiC whisker addition.

AB - It is reported that La-Al-Transition Metal alloys have high undercooled melt formation and high bulk amorphous formation ability by using rapid solidification process. We have examined the undercooling solidification and remarkable nucleation control behavior with adding SiC whisker by using containerless process. In this study, we investigated the undercooling, nucleation behavior and bulk amorphous formation for La 55Al 23Cu 10Ni 5Co 5 samples and samples with SiC whisker addition which are levitated and solidified by using the new gas jet flow and high cooling type electromagnetic levitation system. Therefore, the nucleation was controlled and the high undercooling degree, ΔT(= 0.22-0.28T m), was obtained with increasing SiC whisker addition. In addition, the bulk amorphous sample, φ7 mm sphere, was obtained at the cooling rate of levitating melt and solidification, about 100 K/s, for sample with 0.2% or more SiC whisker addition.

KW - Bulk amorphous

KW - Containerless process

KW - Gas jet flow type levitation apparatus

KW - High undercooling degree

KW - La Al Cu Ni Co alloy

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