Bulk metallic glasses with large plasticity: Composition design from the structural perspective
文献类型：期刊论文
| 作者 | L. Zhang ; Y. Q. Cheng ; A. J. Cao ; J. Xu ; E. Ma |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2009 |
| 卷号 | 57期号:4页码:1154-1164 |
| 关键词 | Amorphous materials Metallic glasses Mechanical properties Plastic deformation Structure atomic packing compression flow deformation brittleness dynamics strain alloy order |
| ISSN号 | 1359-6454 |
| 中文摘要 | While most bulk metallic glasses (BMGs) appear brittle at room temperature, appreciable compressive plastic strains have been observed for some glass compositions. The origin of this behavior is not understood. and the compositions of such plastic BMGs remain difficult to predict. Here we explain the plasticity observed in a Zr-Cu(Ni)-Al BMG, based on a computational analysis of the composition-dependent internal Structures that influence shear transformations and shear localization behavior under loading. A strategy is then proposed to design BMG compositions with the desired local order for significant compressive plasticity. and is demonstrated by the successful discovery of an Hf(62)Ni(25)Al(13) BMG capable of sustaining large compressive strains. The experimentally measured compressive strength, glass transition temperature and Poisson's ratio, which are all composition dependent, are also shown to be macroscopic indicators that correlate well with the predictions from the atomic level structure. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights, reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32553]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. Zhang,Y. Q. Cheng,A. J. Cao,et al. Bulk metallic glasses with large plasticity: Composition design from the structural perspective[J]. Acta Materialia,2009,57(4):1154-1164. |
| APA | L. Zhang,Y. Q. Cheng,A. J. Cao,J. Xu,&E. Ma.(2009).Bulk metallic glasses with large plasticity: Composition design from the structural perspective.Acta Materialia,57(4),1154-1164. |
| MLA | L. Zhang,et al."Bulk metallic glasses with large plasticity: Composition design from the structural perspective".Acta Materialia 57.4(2009):1154-1164. |
入库方式： OAI收割
来源：金属研究所
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