IMR OpenIR
Intrinsic and extrinsic size effects in the deformation of amorphous CuZr/nanocrystalline Cu nanolaminates
W. Guo; E. Jagle; J. H. Yao; V. Maier; S. Korte-Kerzel; J. M. Schneider; D. Raabe
2014
Source PublicationActa Materialia
ISSN1359-6454
Volume80Pages:94-106
AbstractIntroducing a soft crystalline phase into an amorphous alloy can promote the compound's ductility. Here we synthesized multilayered nanolaminates consisting of alternating amorphous Cu54Zr46 and nanocrystalline Cu layers. The Cu layer thickness was systematically varied in different samples. Mechanical loading was imposed by nanoindentation and micropillar compression. Increasing the Cu layer thickness from 10 to 100 am led to a transition from sharp, cross-phase shear banding to gradual bending and co-deformation of the two layer types (amorphous/nanocrystalline). Specimens with a sequence of 100 nm amorphous Cu54Zr46 and 50 nm Cu layers show a compressive flow stress of 2.57 +/- 0.21 GPa, matching the strength of pure CuZr metallic glass, hence exceeding the linear rule of mixtures. In pillar compression, 40% strain without fracture was achieved by the suppression of percolative shear band propagation. The results show that inserting a ductile nanocrystalline phase into a metallic glass prevents catastrophic shear banding. The mechanical response of such nanolaminates can be tuned by adjusting the layer thickness. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[guo, wei ; jaegle, eric ; raabe, dierk] max planck inst eisenforsch gmbh, dept microstruct phys & alloy design, d-40237 dusseldorf, germany. [yao, jiahao] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [maier, verena ; korte-kerzel, sandra] fau erlangen nurnberg, lehrstuhl allgemeine werkstoffeigenschaften, d-91058 erlangen, germany. [korte-kerzel, sandra] rhein westfal th aachen, inst met kunde & met phys, d-52074 aachen, germany. [yao, jiahao ; schneider, jochen m.] rhein westfal th aachen, lehrstuhl werkstoffchem, d-52074 aachen, germany. ; yao, jh (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; jhyao@imr.ac.cn ; d.raabe@mpie.de
KeywordNanolaminates Metallic Glass Nanotwins Shear Band Bulk Metallic-glass Plasticity Finite-element In-situ Composite Mechanical-properties Crystal Plasticity Shear Bands Strain Gradients Thin-films Strength Scale
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73232
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
W. Guo,E. Jagle,J. H. Yao,et al. Intrinsic and extrinsic size effects in the deformation of amorphous CuZr/nanocrystalline Cu nanolaminates[J]. Acta Materialia,2014,80:94-106.
APA W. Guo.,E. Jagle.,J. H. Yao.,V. Maier.,S. Korte-Kerzel.,...&D. Raabe.(2014).Intrinsic and extrinsic size effects in the deformation of amorphous CuZr/nanocrystalline Cu nanolaminates.Acta Materialia,80,94-106.
MLA W. Guo,et al."Intrinsic and extrinsic size effects in the deformation of amorphous CuZr/nanocrystalline Cu nanolaminates".Acta Materialia 80(2014):94-106.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[W. Guo]'s Articles
[E. Jagle]'s Articles
[J. H. Yao]'s Articles
Baidu academic
Similar articles in Baidu academic
[W. Guo]'s Articles
[E. Jagle]'s Articles
[J. H. Yao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[W. Guo]'s Articles
[E. Jagle]'s Articles
[J. H. Yao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.