발간논문

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Vol.27, No.12, 1064 ~ 1071, 1989
Title
Crystal Nucleation Mechanism in Fe40Ni40P14B6 Metallic Glass (1)
김성균Seong Gyoon Kim, 나형용Hyung Yong Ra
Abstract
A method estimating the nucleation ramie acoulately was proposed and the uncleation process during crystallization of Fe_(40)Ni_(40)P_(14)B_6 metallic glass was investigated with transmission electron microscopy. The preferred nucleating phase of the eutectic crystal which is composed of BCT (Fe,Ni)₃(P,B) and γ(Fe,Ni) austenite is BCT (Fe,Ni)₃(P,B). At the temperature range of 621 ∼646 K, the nucleation rate during isothermal crystallization increases monotonically with time. The activation energies of growth rate, steady state nucleation rate and incubation time are 301 KJ/㏖, 802 KJ/㏖ and 390 KJ/㏖, respectively.
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