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Title: Reformation Capability of Short-Range Order and Their Medium-Range Connections Regulates Deformability of Bulk Metallic Glasses
Author: Shi XH(施兴华)
Source: Scientific Reports
Issued Date: 2015-07-16
Volume: 5, Pages:12177
Abstract: Metallic glasses (MGs) typically have high yield strength while low ductility, and the latter is commonly considered as the Achilles' heel of MGs. Elucidate the mechanism for such low ductility becomes the research focus of this field. With molecular level simulations, we show the degree of short-range order (SRO) of atomic structure for brittle Fe-based glass decreases dramatically during the stretch, while mild change occurs in ductile Zr-based glass. The reformation capability for SRO and their medium-range connections is found to be the primary characteristics to differentiate the deformability between the two metallic glasses. We suspect that, in addition to the strength of networks formed by SRO structure, the reformation capability to reform SRO networks also plays the key role in regulating the ductility in metallic glasses. Our study provides important insights into the understanding about the mechanisms accounting for ductility or brittleness of bulk metallic glasses.
Language: 英语
Indexed Type: SCI
Corresponding Author: Shi, XH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
Correspondent Email: shixh@imech.ac.cn
DOI: 10.1038/srep12177
Related URLs: 查看原文
DOC Type: Article
WOS Subject: Multidisciplinary Sciences
WOS Subject Extended: Science & Technology - Other Topics
WOS Keyword Plus: MOLECULAR-DYNAMICS ; DEFORMATION ; FLOW ; PLASTICITY ; BEHAVIOR ; FRACTURE ; DUCTILE ; SOLIDS ; MODEL
WOS ID: WOS:000358008100001
ISSN: 2045-2322
Funder: National Natural Science Foundation of China (NSFC) [11023001, 11425211]
Rank: [Li, Congling; Wei, Yujie; Shi, Xinghua] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Li, Congling] Luoyang Inst Sci & Technol, Sch Civil Engn, Luoyang 471023, Henan Province, Peoples R China
Subject: Science & Technology - Other Topics
Department: LNM微结构计算力学(筹)
Classification: 一类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/55332
Appears in Collections:非线性力学国家重点实验室_期刊论文

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Recommended Citation:
Shi XH. Reformation Capability of Short-Range Order and Their Medium-Range Connections Regulates Deformability of Bulk Metallic Glasses[J]. Scientific Reports,2015,5:12177.
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