CaAl-based bulk metallic glasses with high thermal stability

被引：110

作者：

Guo, FQ ^{[1
]}

Poon, SJ

Shiflet, GJ

机构：

[1] Univ Virginia, Dept Phys, Charlottesville, VA 22903 USA

[2] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22903 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 01期

关键词：

D O I：

10.1063/1.1637940

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report that binary Ca-Al alloys can be readily cast into amorphous rods of 1 mm in diameter. Upon further alloying to depress the liquidus temperature, the amorphous rod diameter is increased to 3 mm. The high glass transition temperature T(g)similar to210degreesC and crystallization onset temperature T(onset)similar to240degreesC or higher observed are attributed to the covalent bonding trend noted in Ca-Al alloys that exhibit complex network structures. Along with a high microhardness value of 200-235 DPH (diamond pyramid hardness) and low mass densities of 2 gm/cm(3), these thermally stable light-metal alloys are recognized as potential structural amorphous metals. (C) 2004 American Institute of Physics.

引用

页码：37 / 39

页数：3

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