MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Comparison of Crystallization Process of Amorphous Zr2Ni Alloy and Metallic Zr2Cu Glass
D. OkaiT. FukamiM. AsadaI. NodaT. YamasakiY. YokoyamaA. Inoue
Author information
JOURNALS FREE ACCESS

2007 Volume 48 Issue 7 Pages 1689-1693

Details
Abstract

Crystal nucleation and time evolution during isothermal annealing in amorphous Zr2Ni at several temperatures just below a crystallization temperature Tx and in supercooled liquid of metallic glass Zr2Cu are examined using a technique of differential thermal analysis. Time dependence of the fraction of crystallization at several temperatures is analyzed by the Johnson-Mehl-Avrami equation. The Avrami exponent is 3.0±0.2 for Zr2Ni and varies from about 3 to 7 for Zr2Cu with increasing temperature. It is suggested for Zr2Ni that the crystal growth at temperatures just below Tx is ruled by a short range diffusion process of constituent elements. The time evolution of crystallized fraction was not well scaled by the half of complete time for full crystallization.

Information related to the author
© 2007 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top