期刊
SCRIPTA MATERIALIA
卷 61, 期 10, 页码 967-969出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2009.08.002
关键词
Metallic glasses; Nuclear magnetic resonance (NMR); Short-range order (SRO)
类别
资金
- US Army Research Office [W911NF-09-1-0343]
- National Science Foundation of China [50621061]
- Chinese Academy of Sciences
Al-27 nuclear magnetic resonance spectroscopy was used to probe the atomic-scale structural evolution in Cu46Zr47-xAl7Gdx (x = 0, 1, 5) glassy alloys with minor Gd addition. It was found that the local symmetry of atomic clusters around Al atoms is the closest to being spherical at 1 at.% Gd addition. Interestingly, this also corresponds to the Gd content for which the glass-forming ability (GFA) reaches a maximum, suggesting that the GFA of these glassy alloys may be dominated by their local geometric structure. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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