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Transformations in undercooled molten Pd40.5Ni40.5P19

Published online by Cambridge University Press:  31 January 2011

C. W. Yuen  and
H. W. Kui
C. W. Yuen
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
H. W. Kui
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
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Abstract

It was demonstrated that liquid phase separation by nucleation and growth (LNG) occurs in undercooled molten Pd40.5Ni40.5P19 for undercoolings ΔT ≤ 60 K (ΔT = Tl − T where Tl is the liquidus and T is the kinetic crystallization temperature), and liquid state spinodal decomposition (LSD) occurs for ΔT ≥ 100. For 60 ≤ ΔT ≤ 100 K, it is the transition regime from LNG to LSD. A ternary phase diagram is introduced to summarize the reactions occurred in undercooled molten Pd40.5Ni40.5P19. Finally, it is suggested that LSD has an important impact on glass-forming ability of metallic alloys.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 11 , November 1998 , pp. 3034 - 3042
Copyright
Copyright © Materials Research Society 1998

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