Dominant factor controlling the fracture mode in nanostructured Cu/Cr multilayer films

J. Y. Zhang; X. Zhang; G. Liu; G. J. Zhang; J. Sun

doi:10.1016/j.msea.2010.12.054

Dominant factor controlling the fracture mode in nanostructured Cu/Cr multilayer films

J. Y. Zhang
, X. Zhang
, G. Liu
, G. J. Zhang
, J. Sun

School of Materials Science and Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

It was recently suggested that the fracture mode in nanostructured metallic multilayer films (NMFs) is related to the strengthening mechanism. Here, based on extensive experimental examinations on the nanoscale damage of Cu/Cr NMFs with wide ranges of modulation period (from 10. nm to 250. nm) and modulation ratio (from 0.11 to 3.0), we conclude that the dominant factor controlling the fracture mode in NMFs is the constraint effect from the ductile layer on the brittle layer, rather than the strengthening mechanism. This constraint effect is quantitatively assessed using a fracture mechanism-based micromechanical model, which yields predictions in broad agreement with the experimental observations.

Original language	English
Pages (from-to)	2982-2987
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	528
Issue number	6
DOIs	https://doi.org/10.1016/j.msea.2010.12.054
State	Published - 15 Mar 2011

Keywords

Constraint effects
Fracture mode
Length scale
Nanostructured multilayers

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10.1016/j.msea.2010.12.054

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title = "Dominant factor controlling the fracture mode in nanostructured Cu/Cr multilayer films",

abstract = "It was recently suggested that the fracture mode in nanostructured metallic multilayer films (NMFs) is related to the strengthening mechanism. Here, based on extensive experimental examinations on the nanoscale damage of Cu/Cr NMFs with wide ranges of modulation period (from 10. nm to 250. nm) and modulation ratio (from 0.11 to 3.0), we conclude that the dominant factor controlling the fracture mode in NMFs is the constraint effect from the ductile layer on the brittle layer, rather than the strengthening mechanism. This constraint effect is quantitatively assessed using a fracture mechanism-based micromechanical model, which yields predictions in broad agreement with the experimental observations.",

keywords = "Constraint effects, Fracture mode, Length scale, Nanostructured multilayers",

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T1 - Dominant factor controlling the fracture mode in nanostructured Cu/Cr multilayer films

AU - Zhang, J. Y.

AU - Zhang, X.

AU - Liu, G.

AU - Zhang, G. J.

AU - Sun, J.

PY - 2011/3/15

Y1 - 2011/3/15

N2 - It was recently suggested that the fracture mode in nanostructured metallic multilayer films (NMFs) is related to the strengthening mechanism. Here, based on extensive experimental examinations on the nanoscale damage of Cu/Cr NMFs with wide ranges of modulation period (from 10. nm to 250. nm) and modulation ratio (from 0.11 to 3.0), we conclude that the dominant factor controlling the fracture mode in NMFs is the constraint effect from the ductile layer on the brittle layer, rather than the strengthening mechanism. This constraint effect is quantitatively assessed using a fracture mechanism-based micromechanical model, which yields predictions in broad agreement with the experimental observations.

AB - It was recently suggested that the fracture mode in nanostructured metallic multilayer films (NMFs) is related to the strengthening mechanism. Here, based on extensive experimental examinations on the nanoscale damage of Cu/Cr NMFs with wide ranges of modulation period (from 10. nm to 250. nm) and modulation ratio (from 0.11 to 3.0), we conclude that the dominant factor controlling the fracture mode in NMFs is the constraint effect from the ductile layer on the brittle layer, rather than the strengthening mechanism. This constraint effect is quantitatively assessed using a fracture mechanism-based micromechanical model, which yields predictions in broad agreement with the experimental observations.

KW - Constraint effects

KW - Fracture mode

KW - Length scale

KW - Nanostructured multilayers

UR - https://www.scopus.com/pages/publications/79151481389

U2 - 10.1016/j.msea.2010.12.054

DO - 10.1016/j.msea.2010.12.054

M3 - 文章

AN - SCOPUS:79151481389

SN - 0921-5093

VL - 528

SP - 2982

EP - 2987

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 6

ER -

Dominant factor controlling the fracture mode in nanostructured Cu/Cr multilayer films

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Keywords

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