In situ isothermal crystallisation of Zr48Cu36Al8Ag8 bulk metallic glass based on pair distribution function analyses

被引：1

作者：

Xu, Y. ^{[1
,2
]}

Fan, C. ^{[3
]}

Lin, J. P. ^{[2
]}

Ren, Y. ^{[4
]}

Hao, G. J. ^{[2
]}

Chen, G. L. ^{[2
]}

机构：

[1] Shandong Jianzhu Univ, Sch Mat Sci & Engn, Jinan 250101, Peoples R China

[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[3] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[4] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

来源：

MATERIALS RESEARCH INNOVATIONS | 2013年 / 17卷

基金：

中国国家自然科学基金;

关键词：

Metallic glass; Atomic structure; In situ synchrotron measurements; Crystallisation; AMORPHOUS-ALLOYS; LIQUID;

D O I：

10.1179/1432891713Z.000000000188

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ synchrotron X-ray measurements were performed on the isothermal annealed Zr48Cu36Al8Ag8 bulk metallic glass (BMG). The crystallisation behaviour and structural evolution during the isothermal annealing were investigated by pair distribution function (PDF) analyses. The results indicate that the crystallization behaviour of the samples annealing at 743 K can be well described by the PDF data. The crystallisation process starts from 12 min and finishes at 54 min, with a rapid transforming period within 24-42 min. Dramatic structural changes take place in short, medium and long atomic range during crystallization. It is found that atoms closely pack in short range, while loosely pack in medium range, indicating the short and medium range ordering in BMG. Furthermore, atoms pack more and more closely during crystallisation process, and finally form the closely packing shells.

引用

页码：S89 / S93

页数：5

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