Direct observations of confined layer slip in Cu/Nb multilayers

Nan Li; Jian Wang; Amit Misra; Jian Yu Huang

doi:10.1017/S143192761200133X

Direct observations of confined layer slip in Cu/Nb multilayers

Nan Li
, Jian Wang
, Amit Misra
, Jian Yu Huang

Los Alamos National Laboratory

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

99 Scopus citations

Abstract

In situ nanoindentation of a 30 nm Cu/20 nm Nb multilayer film in a transmission electron microscope revealed confined layer slip as the dominant deformation mechanism. Dislocations were observed to nucleate from the Cu-Nb interfaces in both layers. Dislocation glide was confined by interfaces to occur within each layer, without transmission across interfaces. Cu and Nb layers co-deformed to large plastic strains without cracking. These microscopy observations provide insights in the unit mechanisms of deformation, work hardening, and recovery in nanoscale metallic multilayers.

Original language	English
Pages (from-to)	1155-1162
Number of pages	8
Journal	Microscopy and Microanalysis
Volume	18
Issue number	5
DOIs	https://doi.org/10.1017/S143192761200133X
State	Published - Oct 1 2012

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title = "Direct observations of confined layer slip in Cu/Nb multilayers",

abstract = "In situ nanoindentation of a 30 nm Cu/20 nm Nb multilayer film in a transmission electron microscope revealed confined layer slip as the dominant deformation mechanism. Dislocations were observed to nucleate from the Cu-Nb interfaces in both layers. Dislocation glide was confined by interfaces to occur within each layer, without transmission across interfaces. Cu and Nb layers co-deformed to large plastic strains without cracking. These microscopy observations provide insights in the unit mechanisms of deformation, work hardening, and recovery in nanoscale metallic multilayers.",

author = "Nan Li and Jian Wang and Amit Misra and Huang, \{Jian Yu\}",

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AU - Li, Nan

AU - Wang, Jian

AU - Misra, Amit

AU - Huang, Jian Yu

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Y1 - 2012/10/1

N2 - In situ nanoindentation of a 30 nm Cu/20 nm Nb multilayer film in a transmission electron microscope revealed confined layer slip as the dominant deformation mechanism. Dislocations were observed to nucleate from the Cu-Nb interfaces in both layers. Dislocation glide was confined by interfaces to occur within each layer, without transmission across interfaces. Cu and Nb layers co-deformed to large plastic strains without cracking. These microscopy observations provide insights in the unit mechanisms of deformation, work hardening, and recovery in nanoscale metallic multilayers.

AB - In situ nanoindentation of a 30 nm Cu/20 nm Nb multilayer film in a transmission electron microscope revealed confined layer slip as the dominant deformation mechanism. Dislocations were observed to nucleate from the Cu-Nb interfaces in both layers. Dislocation glide was confined by interfaces to occur within each layer, without transmission across interfaces. Cu and Nb layers co-deformed to large plastic strains without cracking. These microscopy observations provide insights in the unit mechanisms of deformation, work hardening, and recovery in nanoscale metallic multilayers.

UR - https://www.scopus.com/pages/publications/84868523630

U2 - 10.1017/S143192761200133X

DO - 10.1017/S143192761200133X

M3 - Article

SN - 1431-9276

VL - 18

SP - 1155

EP - 1162

JO - Microscopy and Microanalysis

JF - Microscopy and Microanalysis

IS - 5

ER -

Direct observations of confined layer slip in Cu/Nb multilayers

Abstract

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