CRYSTALLIZATION OF AMORPHOUS FE78B13SI9

被引：27

作者：

BHATTI, AR ^{[1
]}

CANTOR, B ^{[1
]}

机构：

[1] UNIV OXFORD,DEPT MAT,OXFORD CTR ADV MAT & COMPOSITES,OXFORD OX1 3PH,ENGLAND

来源：

JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 03期

关键词：

Amorphous alloy crystal microstructure - Amorphous iron compound crystallization - Differential scanning calorimetry;

D O I：

10.1007/BF00445998

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystallization of amorphous Fe78B13Si9 has been investigated using a combination of differential scanning calorimetry (DSC) and conventional and high-resolution transmission electron microscopy. The crystallization mechanisms and crystalline products are sensitive to the annealing temperature. At 450-degrees-C, crystallization takes place by the growth of bcc alpha-Fe (Si) dendrites, while at 510 and 515-degrees-C there are three simultaneous reactions to form dendritic bcc alpha-Fe (Si), elliptical crystals of bct Fe3B and lamellar eutectic spherulites of bcc alpha-Fe (Si) and bct Fe3B. Quantitative TEM shows that the bcc alpha-Fe (Si) dendrites and bcc alpha-Fe (Si)-bct Fe3B spherulites both form with constant nucleation and growth rates, in agreement with previous DSC measurements of an Avrami exponent of 4.

引用

页码：816 / 823

页数：8

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