Identification of crystal nucleation and growth in an amorphous FeZr2 alloy by means of electrical resistance measurements

被引：7

作者：

Lu, K ^{[1
]}

Zhang, XH ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab Rapidly Solidified Nonequilibrium A, Shenyang 110015, Peoples R China

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2000年 / 80卷 / 12期

关键词：

D O I：

10.1080/0950083001001508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A polymorphous crystallization process in an amorphous FeZr2 alloy has been investigated by means of accurate electrical resistance measurements (ERMs) at elevated temperatures. It was found that, upon crystallization of the amorphous alloy, the electrical resistance increased with increasing temperature, exhibiting three distinct stages. Quantitative microscopy observations revealed that the three stages originated from crystal nucleation, from subsequent growth of crystal nuclei and from coarsening of the crystallites respectively. The activation energies for the crystal nucleation and growth determined from the ERM data agree satisfactorily with the data in the literature. The success in identification of the crystal nucleation and growth processes by means of ERMs may originate from differences in electrical resistance changes due to the crystal formation and the crystalline-amorphous interface formation processes from the amorphous phase.

引用

页码：797 / 805

页数：9

共 19 条

[1] CRYSTALLIZATION CHARACTERISTICS OF FE-ZR METALLIC GLASSES FROM FE43ZR57 TO FE20ZR80 [J].