Atomic-scale mechanisms of the glass-forming ability in metallic glasses.
Atomic-scale mechanisms of the glass-forming ability in metallic glasses.
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DOI：
10.1103/physrevlett.109.105502
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发表时间：
2012-09
影响因子：
8.6
通讯作者：
L. Yang;G. Guo;Lianyi Chen;C. L. Huang;T. Ge;D. Chen;P. K. Liaw;Karel Saksl;Yang Ren;Qiaoshi Zeng;B. LaQua;Fugang Chen;Jianzhong Jiang
中科院分区：
文献类型：
--
作者：
L. Yang;G. Guo;Lianyi Chen;C. L. Huang;T. Ge;D. Chen;P. K. Liaw;Karel Saksl;Yang Ren;Qiaoshi Zeng;B. LaQua;Fugang Chen;Jianzhong Jiang
通过系统的实验测量和理论计算，研究了Cu-Zr和Ni-Nb合金体系中金属玻璃（MG）中玻璃形成能力（GFA）的成分依赖性问题。结果表明，原子级填料效率与GFA密切相关。在两种MG体系中，玻璃晶合金和晶体合金中溶质中心团簇填充效率差异最大的地方存在最佳GFA。这项工作从原子水平上提供了对GFA的理解，并将阐明具有更大临界尺寸的新mg的开发。
The issue, composition dependence of glass-forming ability (GFA) in metallic glasses (MG), has been investigated by systematic experimental measurements coupled with theoretical calculations in Cu-Zr and Ni-Nb alloy systems. It is found that the atomic-level packing efficiency strongly relates to their GFA. The best GFA is located at the largest difference in the packing efficiency of the solute-centered clusters between the glassy and crystal alloys in both MG systems. This work provides an understanding of GFA from atomic level and will shed light on the development of new MGs with larger critical sizes.