Size-dependent plastic stability of Zr-based metallic glass
Size-dependent plastic stability of Zr-based metallic glass
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锆基金属玻璃的尺寸依赖性塑性稳定性
DOI：
10.1016/j.msea.2015.08.062
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Wu X. F.
中科院分区：
文献类型：
--
作者：
Wu F. F.;Jiang S. S.;Zhao R. D.;Zhou Q.;Zhang G. A.;Wu X. F.
研究了锆基非晶合金塑性稳定性的尺寸效应。结果表明，随着试样尺寸的几何减小，金属玻璃呈现出不稳定-亚稳定-稳定的塑性变形转变，表明非本征尺寸效应对金属玻璃的塑性稳定性有明显的影响。从塑性区和弹性耗能的角度解释了尺寸效应。这一发现意味着本发明的Zr金属玻璃本质上是韧性的，并且其塑性变形可以在适当的条件下内在地或外在地稳定。
The size effect on the plastic stability of a Zr-based metallic glass was investigated. It was found that, by geometrically decreasing the sample size, the metallic glass displayed a transition of unstable–metastable–stable plastic deformation, indicating an obvious extrinsic size effect on the plastic stability of the metallic glass. The size effect was explained from the view point of plastic zone and elastic energy dissipation. This finding implies that the present Zr metallic glass is ductile in nature and its plastic deformation can be stabilized intrinsically or extrinsically in suitable conditions.