Enhanced plastic deformation in a metallic glass induced by notches

Enhanced plastic deformation in a metallic glass induced by notches
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由缺口引起的金属玻璃的增强塑性变形

DOI:
10.1080/09500839.2010.512573
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发表时间:
2010-08
影响因子:
1.2
通讯作者:
Zhang, Z. F.
Zhang, Z. F.
中科院分区:
材料科学4区
文献类型:
--
作者:
Zhao, J. X.;Qu, R. T.;Wu, F. F.;Li, S. X.;Zhang, Z. F.

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结果表明,在非晶合金中引入两个对称的缺口,可以提高非晶合金的压缩塑性。塑性的增强可归因于缺口周围较大的应力梯度引起的剪切带传播的阻挡效应。与具有类似缺口的陶瓷试件相比,缺口诱导金属玻璃的塑性增强可以为理解其独特的变形机制提供新的途径。
It is shown that the compressive plasticity of a metallic glass, namely Zr52.5Ni14.6Al10Cu17.9Ti5, can be improved by the introduction of two symmetrical notches. The enhanced plasticity may be ascribed to a blocking effect of the propagation of shear bands caused by large stress gradients around the notches. In contrast to ceramic specimens with similar notches, the plasticity enhancement of metallic glass induced by notches can provide a new approach to understanding its unique mechanism of deformation.
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