Gradient Confinement Induced Uniform Tensile Ductility in Metallic Glass

IMR OpenIR

	Gradient Confinement Induced Uniform Tensile Ductility in Metallic Glass
	X. L. Lu; Q. H. Lu; Y. Li; L. Lu
	2013
发表期刊	Scientific Reports
ISSN	2045-2322
卷号	3
摘要	Metallic 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.
部门归属	[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
关键词	Mechanical-properties Amorphous-alloys Shear-band Plasticity Composites Behavior Layers Flow Film
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71392
专题	中国科学院金属研究所
推荐引用方式 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).