An Attempt to Prepare Metallic Glasses from Quasicrystals

Icosahedrons in supercooled liquids and glasses are considered to be of significance for the glass formation in alloy systems. Starting from the similarity of the local structure of quasicrystals to the icosahedrons in metallic glasses, a scheme is put forward to prepare metallic glasses based on a...

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Published inChinese physics letters Vol. 33; no. 4; pp. 93 - 95
Main Author 李子敬 赵林然 王玉婷 陈泽明 涂文康 张亚齐 薄宏 刘迎丹 王利民
Format Journal Article
LanguageEnglish
Published 01.04.2016
Subjects
二十面体
准晶相
制备
合金系统
局部结构
玻璃形成能力
眼镜
金属玻璃
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Summary:Icosahedrons in supercooled liquids and glasses are considered to be of significance for the glass formation in alloy systems. Starting from the similarity of the local structure of quasicrystals to the icosahedrons in metallic glasses, a scheme is put forward to prepare metallic glasses based on a well-known quasicrystal Zr40Ti40Ni20. A series of （Zr4o Ti40Ni20 ）lOO-x Cos metallic glasses are fabricated, and the optimized glass forming composition is determined at （Zr40 Ti40Ni20 ）92 Cos. The results show that the glass-forming ability of the alloys is c10sely related to the quasicrystalline phases. The mechanism of the enhanced glass-forming ability is discussed.
Bibliography:11-1959/O4
Icosahedrons in supercooled liquids and glasses are considered to be of significance for the glass formation in alloy systems. Starting from the similarity of the local structure of quasicrystals to the icosahedrons in metallic glasses, a scheme is put forward to prepare metallic glasses based on a well-known quasicrystal Zr40Ti40Ni20. A series of （Zr4o Ti40Ni20 ）lOO-x Cos metallic glasses are fabricated, and the optimized glass forming composition is determined at （Zr40 Ti40Ni20 ）92 Cos. The results show that the glass-forming ability of the alloys is c10sely related to the quasicrystalline phases. The mechanism of the enhanced glass-forming ability is discussed.
Zi-Jing Li, Lin-Ran Zhao，, Yu-Ting Wang, Ze-Ming Chen, Wen-Kang , Ya-Qi Zhang, Hong Bo, Ying-Dan Liu, Li-Min Wang State Key Lab of Metastable Materials Science and Technology, and College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/33/4/046401