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Formation of Large Bulk [(Fe0.5Co0.5)0.75B0.20Si0.05]96Nb4 Glassy Alloy by Flux Melting and Water Quenching

Published online by Cambridge University Press:  26 February 2011

Teruo Bitoh ,
Akihiro Makino ,
Akihisa Inoue  and
A. Lindsay Greer
Teruo Bitoh
Affiliation:
teruo_bitoh@akita-pu.ac.jp, Akita Prefectural University, Dpt. of Machine Intelligence and System Science, 84-4 Ebinokuchi, Tuchiya, Yurihonjo, N/A, 015-0055, Japan, +81-184-27-2161, +81-184-27-2188
Akihiro Makino
Affiliation:
amakino@imr.tohoku.ac.jp, Tohoku University, Institute for Materials Research, Japan
Akihisa Inoue
Affiliation:
ainoue@imr.tohoku.ac.jp, Tohoku University, Institute for Materials Research
A. Lindsay Greer
Affiliation:
alg13@cam.ac.uk, University of Cambridge, Dept. of Materials Science and Metallurgy, United Kingdom
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Abstract

The large bulk glassy [(Fe0.5Co0.5)0.75B0.20Si0.05]96Nb4 alloy specimens with the diameters up to 7.7 mm have been prepared by water quenching the melt immersed in the molten flux of B2O3. The maximum diameter of the obtained specimens is approximately 1.5 times as large as the pre-vious result for copper mold casting should be cooled at the higher rate than the of water quenching. The flux melting improves the glass-forming ability by the elimination of oxides and other inclusion in the molten metal which act as heterogeneous nucleation sites for crystallization.

Keywords

amorphouscalorimetryferromagnetic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 903: Symposium Z – Amorphous and Nanocrystalline Metals for Structural Applications , 2005 , 0903-Z05-18
Copyright
Copyright © Materials Research Society 2006

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