| Strength softening at shear bands in metallic glasses | |
Lei XQ(雷现奇); Wei YJ(魏宇杰) ; Hu Z(胡铮); Wang WH(汪卫华); Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
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| Source Publication | PHILOSOPHICAL MAGAZINE LETTERS
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| 2013-04-01 | |
| Volume | 93Issue:4Pages:221-230 |
| ISSN | 0950-0839 |
| Abstract | The plasticity of metallic glasses (MGs) is mediated by localized shearing in thin bands, degrading the mechanical properties at shear bands (SBs), which can cause shear localization and poor deformability. Quantifying the strength loss at SBs in MGs is important for both further material improvement and failure prediction. By applying a combination of microscale bending with in situ tensile tests, we successfully determine the strength loss at SBs in two typical MGs, namely Zr41Ti14Cu12.5Ni10Be22.5 and (Cu50Zr50)95Al5, that are about 20% lower than those of their intact counterparts. We further notice, based on fractographic examinations, that stable SBs may induce only a negligible heat, but unstable SBs give rise to a high temperature increase in SBs. This observation sheds light on the controversy about whether SBs in MGs must be hot. |
| Keyword | Metallic Glasses Shear Band Bending Strength Softening |
| Subject Area | 新型材料的力学问题 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000317312400005 |
| Funding Organization | Chinese Academy of Sciences; NSFC [11021262, 50921091]; MOST 973 of China [2012CB937500, 2010CB731603] |
| Department | LNM微结构计算力学（筹） |
| Classification | Q3 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/46987 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Lei XQ,Wei YJ,Hu Z,et al. Strength softening at shear bands in metallic glasses[J]. PHILOSOPHICAL MAGAZINE LETTERS,2013,93,4,:221-230. |
| APA | Lei XQ,Wei YJ,Hu Z,Wang WH,&Wei, YJ .(2013).Strength softening at shear bands in metallic glasses.PHILOSOPHICAL MAGAZINE LETTERS,93(4),221-230. |
| MLA | Lei XQ,et al."Strength softening at shear bands in metallic glasses".PHILOSOPHICAL MAGAZINE LETTERS 93.4(2013):221-230. |
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