Segregation-Induced Nanofaceting Transition at an Asymmetric Tilt Grain Boundary in Copper
Abstract
We show that chemistry can be used to trigger a nanofaceting transition. In particular, the segregation of Ag to an asymmetric tilt grain boundary in Cu is investigated. Aberration-corrected electron microscopy reveals that annealing the bicrystal results in the formation of nanometer-sized facets composed of preferentially Ag-segregated symmetric Σ5{210} segments and Ag-depleted {230}/{100} asymmetric segments. Our observations oppose an anticipated trend to form coarse facets. Atomistic simulations confirm the nanofacet formation observed in the experiment and demonstrate a concurrent grain boundary phase transition induced by the anisotropic segregation of Ag.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1488631
- Alternate Identifier(s):
- OSTI ID: 1524296
- Report Number(s):
- LLNL-JRNL-751237
Journal ID: ISSN 0031-9007; PRLTAO; 255502
- Grant/Contract Number:
- AC02-05CH11231; AC52-07NA27344; 17-LW-012
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 121 Journal Issue: 25; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Peter, Nicolas J., Frolov, Timofey, Duarte, Maria J., Hadian, Raheleh, Ophus, Colin, Kirchlechner, Christoph, Liebscher, Christian H., and Dehm, Gerhard. Segregation-Induced Nanofaceting Transition at an Asymmetric Tilt Grain Boundary in Copper. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.121.255502.
Peter, Nicolas J., Frolov, Timofey, Duarte, Maria J., Hadian, Raheleh, Ophus, Colin, Kirchlechner, Christoph, Liebscher, Christian H., & Dehm, Gerhard. Segregation-Induced Nanofaceting Transition at an Asymmetric Tilt Grain Boundary in Copper. United States. https://doi.org/10.1103/PhysRevLett.121.255502
Peter, Nicolas J., Frolov, Timofey, Duarte, Maria J., Hadian, Raheleh, Ophus, Colin, Kirchlechner, Christoph, Liebscher, Christian H., and Dehm, Gerhard. Thu .
"Segregation-Induced Nanofaceting Transition at an Asymmetric Tilt Grain Boundary in Copper". United States. https://doi.org/10.1103/PhysRevLett.121.255502.
@article{osti_1488631,
title = {Segregation-Induced Nanofaceting Transition at an Asymmetric Tilt Grain Boundary in Copper},
author = {Peter, Nicolas J. and Frolov, Timofey and Duarte, Maria J. and Hadian, Raheleh and Ophus, Colin and Kirchlechner, Christoph and Liebscher, Christian H. and Dehm, Gerhard},
abstractNote = {We show that chemistry can be used to trigger a nanofaceting transition. In particular, the segregation of Ag to an asymmetric tilt grain boundary in Cu is investigated. Aberration-corrected electron microscopy reveals that annealing the bicrystal results in the formation of nanometer-sized facets composed of preferentially Ag-segregated symmetric Σ5{210} segments and Ag-depleted {230}/{100} asymmetric segments. Our observations oppose an anticipated trend to form coarse facets. Atomistic simulations confirm the nanofacet formation observed in the experiment and demonstrate a concurrent grain boundary phase transition induced by the anisotropic segregation of Ag.},
doi = {10.1103/PhysRevLett.121.255502},
journal = {Physical Review Letters},
number = 25,
volume = 121,
place = {United States},
year = {Thu Dec 20 00:00:00 EST 2018},
month = {Thu Dec 20 00:00:00 EST 2018}
}
https://doi.org/10.1103/PhysRevLett.121.255502
Web of Science
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