MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
New V45Zr20Ni20Cu10Al2.5Pd2.5 Glassy Alloy Powder with Wide Supercooled Liquid Region
M. Sherif El-EskandaranyAkihisa Inoue
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2002 Volume 43 Issue 4 Pages 770-772

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Abstract

New multicomponent V-based glassy alloy powder has been synthesized by mechanical alloying a mixture of elemental V45Zr20Ni20Cu10Al2.5Pd2.5 powder at room temperature, using a low energy ball mill. The glassy powder of the end-product (720 ks) in which its glass transition temperature (Tg) lies at a rather high temperature (745 K), crystallizes through two sharp exothermic reactions at 843 K and 919 K, respectively. The total enthalpy change of crystallization (ΔHx) is −1.78 kJ/mol. The supercooled liquid region before crystallization, ΔTx of the synthesized glassy powder shows a high value (98 K) for a metallic glassy system. The reduced glass transition temperature (ratio between Tg and liquidus temperatures, Tl (TgTl)) was found to be 0.52.

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© 2002 The Japan Institute of Metals and Materials
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