Superelongation and Atomic Chain Formation in Nanosized Metallic Glass

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	Superelongation and Atomic Chain Formation in Nanosized Metallic Glass
	J. H. Luo; F. F. Wu; J. Y. Huang; J. Q. Wang; S. X. Mao
	2010
发表期刊	Physical Review Letters
ISSN	0031-9007
卷号	104 期号:21
摘要	Bulk metallic glasses are brittle and fail with no plastic strain at room temperature once shear bands propagate. How do metallic glasses deform when the size is less than that of shear bands? Here we show that Al(90)Fe(5)Ce(5) metallic glass with a size <20 nm can be extremely elongated to similar to 200%. Remarkably, even an atomic chain was formed after sample necking, which was never observed in metallic glasses. The unexpected ductility may originate from the fast surface diffusion and the absence of shear band formation, and may guide the development of ductile metallic glasses for engineering applications.
部门归属	[luo, j. h.; mao, s. x.] univ pittsburgh, dept mech engn & mat sci, pittsburgh, pa 15261 usa. [wu, f. f.] liaoning univ technol, sch mat sci & engn, jinzhou 121001, peoples r china. [huang, j. y.] sandia natl labs, ctr integrated nanotechnol, albuquerque, nm 87185 usa. [wang, j. q.] inst met sci & technol, shenyang 110016, peoples r china.;luo, jh (reprint author), univ pittsburgh, dept mech engn & mat sci, pittsburgh, pa 15261 usa;jhuang@sandia.gov smao@engr.pitt.edu
关键词	Mechanical-properties Amorphous-alloys Fracture Mechanisms Matrix Composites Tensile Ductility Damage Deformation
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31356
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. H. Luo,F. F. Wu,J. Y. Huang,et al. Superelongation and Atomic Chain Formation in Nanosized Metallic Glass[J]. Physical Review Letters,2010,104(21).
APA	J. H. Luo,F. F. Wu,J. Y. Huang,J. Q. Wang,&S. X. Mao.(2010).Superelongation and Atomic Chain Formation in Nanosized Metallic Glass.Physical Review Letters,104(21).
MLA	J. H. Luo,et al."Superelongation and Atomic Chain Formation in Nanosized Metallic Glass".Physical Review Letters 104.21(2010).