Crystal Growth in Amorphous Binary Alloys of Zr-Ni System

被引：1

作者：

Fukami, T. ^{[1
]}

Noda, I. ^{[1
]}

Asada, M. ^{[1
]}

Okai, D. ^{[1
]}

Yamasaki, T. ^{[1
]}

机构：

[1] Univ Hyogo, Dept Chem & Mat Sci, Grad Sch Engn, Himeji, Hyogo 6712280, Japan

来源：

ADVANCED MATERIALS AND PROCESSING | 2007年 / 26-28卷

关键词：

Amorphous Zr-Ni alloy; crystal growth; Avrami exponent;

D O I：

10.4028/www.scientific.net/AMR.26-28.675

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A crystallization process in an amorphous state under isothermal condition is examined for binary alloys ZrNi and ZrNi2 by differential thermal analysis (DTA). Time dependence of DTA curves is measured at several constant temperatures just below crystallization temperature. The fraction of crystallized volume in amorphous state and its time evolution during isothermal annealing are measured. These data are analyzed by the Johnson-Mehl-Avrami formula. The Avrami exponent is 2.4 +/- 0.1 for ZrNi and 3 similar to 4 depending on the set temperature for ZrNi2. The activation energy for crystallization of amorphous ZrNi and ZrNi2 was estimated by plots of lnt(1/2) vs. 1/T.

引用

页码：675 / +

页数：5

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