Minor addition induced enhancement of strength of Mg-based bulk metallic glass

Minor addition induced enhancement of strength of Mg-based bulk metallic glass
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微量添加可提高镁基大块金属玻璃的强度

DOI:
10.1016/j.jnoncrysol.2008.08.010
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发表时间:
2008-12
影响因子:
3.5
通讯作者:
Bai, H. Y.
Bai, H. Y.
中科院分区:
材料科学2区
文献类型:
--
作者:
Yu, P.;Wang, J. Q.;Bai, H. Y.

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结果表明,微量Gd的加入可显著提高mg基大块金属玻璃的断裂强度,最高可达1.10GPa。BMG的泊松比v也降至0.261,接近脆性氧化玻璃的泊松比v。添加了% Gd。这种强度的显著增强(接近理论强度值)和泊松比的显著降低是由于微量Gd的加入引起了bmg的结构变化。
We report that the fracture strength of Mg-based bulk metallic glasses (BMGs) can be dramatically enhanced up to 1.10GPa by minor Gd addition. The Poisson’s ratio v of the BMG also decreases to 0.261 close to that of brittle oxide glasses when 1at.% Gd was added. Such significant enhancement in strength which approaches the theoretical strength value and dramatically decrease in the Poisson’s ratio are attributed to the structural change of the BMGs induced by the Gd minor addition.
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