CRYSTALLIZATION STUDY OF AMORPHOUS FE40NI40B20 BY ELECTRICAL-RESISTIVITY MEASUREMENT

被引：14
|
作者：
MITRA, A
RAO, V
PRAMANIK, S
MOHANTY, ON
机构：
[1] Magnetic Materials Group, MTP division, National Metallurgical Laboratory, Jamshedpur
来源：
JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 21期
关键词：
D O I：
10.1007/BF01119751
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The crystallization in amorphous Fe40Ni40B20 alloy has been studied by electrical resistivity measurement. It shows a three stage compared to the more conventional two-stage crystallization behaviour in many metallic glasses. The Johnson-Mehl-Avrami equation was found to be operative only for 40% transformed crystallized volume for the highest measured isotherm (740 K). The Avrami exponent and activation energy were found to be 1.75 and 53 kcal mol-1, respectively. The low activation energy in the amorphous alloy has been explained by the structural relaxation model.
引用
收藏
页码：5863 / 5868
页数：6
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