Effect of the state of a melt on the glass-forming ability, structure, and properties of a melt-quenched bulk amorphous nickel-based alloy

The glass-forming ability, viscosity, phase composition, and microhardness of a melt-quenched Ni^sub 64.4^Fe^sub 4^Cr^sub 4.9^Mn^sub 2^B^sub 16.2^C^sub 0.5^Si^sub 8^ bulk amorphous alloy quenched from various melt temperatures at near-critical rates are studied. The melt-quenching temperature ensuri...

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Bibliographic Details
Published in:Russian metallurgy Metally 2007-12, Vol.2007 (6), p.519-523
Main Authors: Kurakova, N. V., Molokanov, V. V., Sterkhova, I. V., Umnov, P. P., Lad’yanov, V. I., Kamaeva, L. V.
Format: Article
Language:English
Subjects:
Melt temperature
Melts
Microhardness
Nickel base alloys
Phase composition
Quenching (cooling)
Solidification
Viscosity
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Summary:The glass-forming ability, viscosity, phase composition, and microhardness of a melt-quenched Ni^sub 64.4^Fe^sub 4^Cr^sub 4.9^Mn^sub 2^B^sub 16.2^C^sub 0.5^Si^sub 8^ bulk amorphous alloy quenched from various melt temperatures at near-critical rates are studied. The melt-quenching temperature ensuring the maximum glass-forming ability and microhardness (HV= 13 GPa) of the alloy is found to be 1200-1230°C. The melt viscosity is shown to behave anomalously near the solidification temperature, and the related factors favoring this anomalous behavior are detected.[PUBLICATION ABSTRACT]
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029507060134