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Title: Deformation response of AgCu interfaces investigated by in situ and ex situ TEM straining and MD simulations

The mechanisms of strain transfer across Ag/Cu interfaces were determined by a combination of in situ and ex situ TEM straining experiments and molecular dynamics simulations. Minimizing the magnitude of the Burgers vector of the residual dislocation generated in the interface was the dominant factor for determining the outcome of dislocation and deformation twin interactions with both non-coherent twin and cube-on-cube interfaces. This included the unexpected finding, due to the loading condition, of deformation twin activation in the Cu layer due to the intersection of deformation twins in Ag with the interface. As a result, deformation twin nucleation in Ag from the non-coherent twin interfaces was also explained by a Burgers vector minimization argument.
Authors:
ORCiD logo [1] ;  [2] ;  [2] ; ORCiD logo [3] ;  [2]
  1. Univ. of Illinois, Urbana, IL (United States)
  2. Univ. of Wisconsin, Madison, WI (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-23996
Journal ID: ISSN 1359-6454
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 138; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Dislocations; Eutectic; In situ transmission electron microscopy (TEM); MD simulations; Interfaces
OSTI Identifier:
1374358

Eftink, Benjamin P., Li, Ao, Szlufarska, I., Mara, Nathan Allan, and Robertson, Ian M.. Deformation response of AgCu interfaces investigated by in situ and ex situ TEM straining and MD simulations. United States: N. p., Web. doi:10.1016/j.actamat.2017.07.051.
Eftink, Benjamin P., Li, Ao, Szlufarska, I., Mara, Nathan Allan, & Robertson, Ian M.. Deformation response of AgCu interfaces investigated by in situ and ex situ TEM straining and MD simulations. United States. doi:10.1016/j.actamat.2017.07.051.
Eftink, Benjamin P., Li, Ao, Szlufarska, I., Mara, Nathan Allan, and Robertson, Ian M.. 2017. "Deformation response of AgCu interfaces investigated by in situ and ex situ TEM straining and MD simulations". United States. doi:10.1016/j.actamat.2017.07.051. https://www.osti.gov/servlets/purl/1374358.
@article{osti_1374358,
title = {Deformation response of AgCu interfaces investigated by in situ and ex situ TEM straining and MD simulations},
author = {Eftink, Benjamin P. and Li, Ao and Szlufarska, I. and Mara, Nathan Allan and Robertson, Ian M.},
abstractNote = {The mechanisms of strain transfer across Ag/Cu interfaces were determined by a combination of in situ and ex situ TEM straining experiments and molecular dynamics simulations. Minimizing the magnitude of the Burgers vector of the residual dislocation generated in the interface was the dominant factor for determining the outcome of dislocation and deformation twin interactions with both non-coherent twin and cube-on-cube interfaces. This included the unexpected finding, due to the loading condition, of deformation twin activation in the Cu layer due to the intersection of deformation twins in Ag with the interface. As a result, deformation twin nucleation in Ag from the non-coherent twin interfaces was also explained by a Burgers vector minimization argument.},
doi = {10.1016/j.actamat.2017.07.051},
journal = {Acta Materialia},
number = C,
volume = 138,
place = {United States},
year = {2017},
month = {7}
}