Ex situ and in situ measurements of the shear strength of interfaces in metallic multilayers

N. Li; N. A. Mara; J. Wang; P. Dickerson; J. Y. Huang; A. Misra

doi:10.1016/j.scriptamat.2012.06.008

Ex situ and in situ measurements of the shear strength of interfaces in metallic multilayers

N. Li
, N. A. Mara
, J. Wang
, P. Dickerson
, J. Y. Huang
, A. Misra

Los Alamos National Laboratory

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

63 Scopus citations

Abstract

Interfaces are generally weaker in terms of shearing and debonding in comparison to perfect grains since atoms within interfaces usually have low coordination bonds. In this letter, we report the experimental measurements of the shear strength of Cu-Nb interfaces by using quantitative ex situ and in situ indentations. The interface shear strength is estimated from experiments in the range of 0.3-0.55 GPa, which is consistent with atomistic simulations and evidence of the weak interface strengthening mechanisms in metallic multilayers.

Original language	English
Pages (from-to)	479-482
Number of pages	4
Journal	Scripta Materialia
Volume	67
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2012.06.008
State	Published - Sep 1 2012

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10.1016/j.scriptamat.2012.06.008

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abstract = "Interfaces are generally weaker in terms of shearing and debonding in comparison to perfect grains since atoms within interfaces usually have low coordination bonds. In this letter, we report the experimental measurements of the shear strength of Cu-Nb interfaces by using quantitative ex situ and in situ indentations. The interface shear strength is estimated from experiments in the range of 0.3-0.55 GPa, which is consistent with atomistic simulations and evidence of the weak interface strengthening mechanisms in metallic multilayers.",

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AU - Li, N.

AU - Mara, N. A.

AU - Wang, J.

AU - Dickerson, P.

AU - Huang, J. Y.

AU - Misra, A.

PY - 2012/9/1

Y1 - 2012/9/1

N2 - Interfaces are generally weaker in terms of shearing and debonding in comparison to perfect grains since atoms within interfaces usually have low coordination bonds. In this letter, we report the experimental measurements of the shear strength of Cu-Nb interfaces by using quantitative ex situ and in situ indentations. The interface shear strength is estimated from experiments in the range of 0.3-0.55 GPa, which is consistent with atomistic simulations and evidence of the weak interface strengthening mechanisms in metallic multilayers.

AB - Interfaces are generally weaker in terms of shearing and debonding in comparison to perfect grains since atoms within interfaces usually have low coordination bonds. In this letter, we report the experimental measurements of the shear strength of Cu-Nb interfaces by using quantitative ex situ and in situ indentations. The interface shear strength is estimated from experiments in the range of 0.3-0.55 GPa, which is consistent with atomistic simulations and evidence of the weak interface strengthening mechanisms in metallic multilayers.

UR - https://www.scopus.com/pages/publications/84864277156

U2 - 10.1016/j.scriptamat.2012.06.008

DO - 10.1016/j.scriptamat.2012.06.008

M3 - Article

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VL - 67

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JO - Scripta Materialia

JF - Scripta Materialia

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ER -

Ex situ and in situ measurements of the shear strength of interfaces in metallic multilayers

Abstract

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