Crystallization in Fe- and Co-Based Amorphous Alloys Studied by In-Situ X-Ray Diffraction

被引：2

作者：

Zhang, L. J. ^{[1
]}

Yu, P. F. ^{[1
]}

Cheng, H. ^{[1
]}

Zhang, M. D. ^{[1
]}

Liu, D. J. ^{[1
]}

Zhou, Z. ^{[1
]}

Jin, Q. ^{[1
]}

Liaw, P. K. ^{[2
]}

Li, G. ^{[1
,2
]}

Liu, R. P. ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2016年 / 47A卷 / 12期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金; 美国国家科学基金会;

关键词：

SUPERCOOLED LIQUID REGION; BULK METALLIC GLASSES; KINETICS;

D O I：

10.1007/s11661-016-3761-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The amorphous alloys, Fe80Si20, Fe78Si9B13, and Fe4Co67Mo1.5Si16.5B11, were prepared by the spinning method in pure argon. The crystallization behaviors of the three amorphous alloys were researched by in-situ X-ray diffraction (XRD), and the crystallization activation energy was calculated, based on the results of differential scanning calorimetry. The crystallization mechanism of the Fe- and Co-based alloys was analyzed, based on the experimental data. The transformation kinetics was described in terms of Johnson-Mehl-Avrami kinetics, except that the Avrami exponent of the Fe78Si9B13 amorphous alloy annealed at 753 K (480 A degrees C) was 4.12; the obtained values for the overall Avrami exponents of the other three amorphous alloys were below 1, as usually found for the Fe-Si amorphous alloys.

引用

页码：5859 / 5862

页数：4

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