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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
Source PublicationPhysical Review Letters
ISSN0031-9007
Volume113Issue:3
AbstractDeformation 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.
description.department[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
KeywordSevere Plastic-deformation Metallic Glasses Specimen Preparation Cu Alloys Size Temperatures Composites Copper Zr
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73233
Collection中国科学院金属研究所
Recommended Citation
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).
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