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

被引：62
|
作者：
Li, N. [1 ]
Mara, N. A. [1 ]
Wang, J. [2 ]
Dickerson, P. [2 ]
Huang, J. Y. [3 ]
Misra, A. [1 ]
机构：
[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA
[2] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA
[3] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源：
SCRIPTA MATERIALIA | 2012年 / 67卷 / 05期
关键词：
Shear strength; In situ indentation; Cu-Nb interface; Multilayer; GRAIN-BOUNDARY; SLIP TRANSMISSION; MATRIX COMPOSITES; AB-INITIO; DEFORMATION; DISLOCATIONS; MECHANISMS; ALUMINUM; ROOM; NANOINDENTATION;
D O I：
10.1016/j.scriptamat.2012.06.008
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
引用
收藏
页码：479 / 482
页数：4
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