Difference in microstructure of Zr41Ti14Cu12.5Ni10Be22.5 glasses prepared in a 52 m drop tube and by water quenching

被引：5
|
作者：
Li, Gong [1 ,2 ]
Gao, Y. P. [1 ]
Chi, Z. H. [3 ]
Liu, J. [4 ]
Zhang, T. [2 ]
Liu, R. P. [1 ]
机构：
[1] Yanshan Univ, Key Lab Metastable Mat Sci & Technol, Qinhuangdao, Peoples R China
[2] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
[3] Chinese Acad Sci, Natl Micrograv Lab, Beijing, Peoples R China
[4] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2008年 / 88卷 / 07期
基金：
中国国家自然科学基金;
关键词：
bulk metallic glass; high pressure; drop tube; amorphous alloys; synchrotron radiation;
D O I：
10.1080/09500830802290557
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A 52 m drop tube has been used to solidify bulk-glass-forming Zr41Ti14Cu12.5Ni10Be22.5 alloy. Glassy balls with different sizes solidified from the droplets whose structural features, glass-transition behaviour and crystallization kinetics have been investigated. The results indicate that the apparent activation energies of the glass transition and main crystallization reaction are significantly different from those of samples prepared by water quenching. The structural difference between the two types of glassy specimen is revealed by compression studies and in situ energy-dispersive X-ray diffraction. The results are important for understanding the structural features of bulk-forming glasses.
引用
收藏
页码：543 / 551
页数：9
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