Shear-Induced Mixing Governs Codeformation of Crystalline-Amorphous Nanolaminates

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	Shear-Induced Mixing Governs Codeformation of Crystalline-Amorphous Nanolaminates
	W. Guo; E. A. Jagle; P. P. Choi; J. H. Yao; A. Kostka; J. M. Schneider; D. Raabe
	2014
发表期刊	Physical Review Letters
ISSN	0031-9007
卷号	113 期号:3
摘要	Deformation of ductile crystalline-amorphous nanolaminates is not well understood due to the complex interplay of interface mechanics, shear banding, and deformation-driven chemical mixing. Here we present indentation experiments on 10 nm nanocrystalline Cu-100 nm amorphous CuZr model multilayers to study these mechanisms down to the atomic scale. By using correlative atom probe tomography and transmission electron microscopy we find that crystallographic slip bands in the Cu layers coincide with noncrystallographic shear bands in the amorphous CuZr layers. Dislocations from the crystalline layers drag Cu atoms across the interface into the CuZr layers. Also, crystalline Cu blocks are sheared into the CuZr layers. In these sheared and thus Cu enriched zones the initially amorphous CuZr layer is rendered into an amorphous plus crystalline nanocomposite.
部门归属	[guo, wei ; jaegle, eric a. ; choi, pyuck-pa ; kostka, aleksander ; raabe, dierk] max planck inst eisenforsch gmbh, d-40237 dusseldorf, germany. [yao, jiahao] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [schneider, jochen m.] rhein westfal th aachen, d-52074 aachen, germany. ; guo, w (reprint author), max planck inst eisenforsch gmbh, d-40237 dusseldorf, germany. ; guo.w@mpie.de ; d.raabe@mpie.de
关键词	Severe Plastic-deformation Metallic Glasses Specimen Preparation Cu Alloys Size Temperatures Composites Copper Zr
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/321006/73233
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Guo,E. A. Jagle,P. P. Choi,et al. Shear-Induced Mixing Governs Codeformation of Crystalline-Amorphous Nanolaminates[J]. Physical Review Letters,2014,113(3).
APA	W. Guo.,E. A. Jagle.,P. P. Choi.,J. H. Yao.,A. Kostka.,...&D. Raabe.(2014).Shear-Induced Mixing Governs Codeformation of Crystalline-Amorphous Nanolaminates.Physical Review Letters,113(3).
MLA	W. Guo,et al."Shear-Induced Mixing Governs Codeformation of Crystalline-Amorphous Nanolaminates".Physical Review Letters 113.3(2014).