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Published in: Journal of Nanoparticle Research 7/2022

01-07-2022 | Research paper

Deformation mechanisms of nano-twinned Ag-doped Cu alloys with grain boundary affect zone segregation

Authors: Guo Li, Fengtian Li, Qixing Cai, Ruipeng Wang, Feng Zhang

Published in: Journal of Nanoparticle Research | Issue 7/2022

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Abstract

Utilizing molecular dynamics (MD) simulation, the effects of grain size and twin boundary spacings (TBS) on the deformation mechanisms of nano-twinned (NT) Ag-doped Cu alloys are investigated. The doped Ag atoms are segregated to grain boundary affect zone (GBAZ). Both lattice and twining partial dislocations emitted from the amorphous inter-granular layer (GBAZ-segregated domains) are frequently observed, which switch on the strength enhancement and strength softening regime respectively. Consequently, it is hard to relate flow stress with dislocation density. Fortunately, the average flow stress of NT Ag-doped Cu alloy seems to be sensitive to GBAZ phase transition rather than dislocation density.
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Metadata
Title
Deformation mechanisms of nano-twinned Ag-doped Cu alloys with grain boundary affect zone segregation
Authors
Guo Li
Fengtian Li
Qixing Cai
Ruipeng Wang
Feng Zhang
Publication date
01-07-2022
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 7/2022
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-022-05511-6

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