Segregation-Induced Nanofaceting Transition at an Asymmetric Tilt Grain Boundary in Copper
Journal Article
·
· Physical Review Letters
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC02-05CH11231; AC52-07NA27344; 17-LW-012
- OSTI ID:
- 1488631
- Alternate ID(s):
- OSTI ID: 1524296
- Report Number(s):
- LLNL-JRNL-751237; PRLTAO; 255502
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 121 Journal Issue: 25; ISSN 0031-9007
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 32 works
Citation information provided by
Web of Science
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