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Gradient Confinement Induced Uniform Tensile Ductility in Metallic Glass
X. L. Lu; Q. H. Lu; Y. Li; L. Lu
2013
Source PublicationScientific Reports
ISSN2045-2322
Volume3
AbstractMetallic glass (MG) generally fails in a brittle manner under uniaxial tension loading at room temperature. The lack of plastic strain of MG is due to the severe plastic instability via the easily formed one dominate shear band. There have been several approaches to improve the ductility in MG, but achieving uniform tensile ductility for monolithic MG in bulk size remains a challenge. Here we demonstrate a uniform tensile ductility of 12% achieved in a micrometer scale Ni-P amorphous film coated on a Ni substrate with gradient structure. Instead of a single run-away shear band, such a gradient structure generates massive extensive multiple shear bands in the film, leading to a record high tensile ductility in MG. The present finding highlights a novel route for achieving uniform tensile ductility in monolithic metallic glass with bulk size.
description.department[lu, x. l. ; lu, q. h. ; li, y. ; lu, l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [li, y.] natl univ singapore, fac engn, dept mat sci & engn, singapore 117576, singapore. ; lu, l (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; liyi@imr.ac.cn ; llu@imr.ac.cn
KeywordMechanical-properties Amorphous-alloys Shear-band Plasticity Composites Behavior Layers Flow Film
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71392
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
X. L. Lu,Q. H. Lu,Y. Li,et al. Gradient Confinement Induced Uniform Tensile Ductility in Metallic Glass[J]. Scientific Reports,2013,3.
APA X. L. Lu,Q. H. Lu,Y. Li,&L. Lu.(2013).Gradient Confinement Induced Uniform Tensile Ductility in Metallic Glass.Scientific Reports,3.
MLA X. L. Lu,et al."Gradient Confinement Induced Uniform Tensile Ductility in Metallic Glass".Scientific Reports 3(2013).
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