Prevalence of shear banding in compression of Zr41Ti14Cu12.5Ni10Be22.5 pillars as small as 150 nm in diameter
文献类型：期刊论文
| 作者 | Wu, XL ; Guo, YZ ; Wei, Q ; Wang, WH |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2009 |
| 卷号 | 57期号:12页码:3562 |
| ISSN号 | 1359-6454 |
| 关键词 | BULK-METALLIC-GLASS STRAIN-RATE SENSITIVITY MECHANICAL-PROPERTIES AMORPHOUS-ALLOYS DYNAMIC COMPRESSION ASPECT RATIO DEFORMATION BEHAVIOR FRACTURE TEMPERATURE |
| 通讯作者 | Wu, XL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | Recently, the size dependence of mechanical behaviors, particularly the yield strength and plastic deformation mode, of bulk metallic glasses (BMG) has created a great deal of interest. Contradicting conclusions have been drawn by different research groups, based on various experiments on different BMG systems. Based on in situ compression transmission electron microscopy (TEM) experiments on Zr41Ti14Cu12.5Ni10Be22.5 (Vit 1) nanopillars, this paper provides strong evidence that shear banding still prevails at specimen length scales as small as 150 nm in diameter. This is supported by in situ and ex situ images of shear bands, and by the carefully recorded displacement bursts under load control its well as load drops under displacement control. Finite element modeling of the stress state within the pillar shows that the unavoidable geometry constraints accompanying such experiments impart a strong effect on the experimental results, including non-uniform stress distributions and high level hydrostatic pressures. The seemingly improved compressive ductility is believed to be due to such geometry constraints. Observations underscore the notion that the mechanical behavior of metallic glasses, including strength and plastic deformation mode, is size independent at least in Vit 1. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 资助信息 | NSFC [50890171, 10721202, 50571110]; CAS [KJCX2-YW-MO4]; MOST [2004CB619305]; Student Fund of the Chinese Ministry of Education [20070699044]; III Project of PR China [1307050]; China Scholarship Council [[2007] 3020] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51457]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wu, XL,Guo, YZ,Wei, Q,et al. Prevalence of shear banding in compression of Zr41Ti14Cu12.5Ni10Be22.5 pillars as small as 150 nm in diameter[J]. ACTA MATERIALIA,2009,57(12):3562. |
| APA | Wu, XL,Guo, YZ,Wei, Q,&Wang, WH.(2009).Prevalence of shear banding in compression of Zr41Ti14Cu12.5Ni10Be22.5 pillars as small as 150 nm in diameter.ACTA MATERIALIA,57(12),3562. |
| MLA | Wu, XL,et al."Prevalence of shear banding in compression of Zr41Ti14Cu12.5Ni10Be22.5 pillars as small as 150 nm in diameter".ACTA MATERIALIA 57.12(2009):3562. |
入库方式： OAI收割
来源：物理研究所
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