Atomistic Simulation of Slow Grain Boundary Motion
Abstract
Existing atomistic simulation techniques to study grain boundary motion are usually limited to either high velocities or temperatures and are difficult to compare to realistic experimental conditions. Here we introduce an adapted simulation method that can access boundary velocities in the experimental range and extract mobilities in the zero driving force limit at temperatures as low as ~0.2Tm (Tm is the melting point). In conclusion, the method reveals three mechanistic regimes of boundary mobility at zero net velocity depending on the system temperature.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1386867
- Alternate Identifier(s):
- OSTI ID: 1101434
- Grant/Contract Number:
- SC0001299; FG02-09ER46577
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 106; Journal Issue: 4; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; solar (photovoltaic); solar (thermal); solid state lighting; phonons; thermal conductivity; thermoelectric; defects; mechanical behavior; charge transport; spin dynamics; materials and chemistry by design; optics; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)
Citation Formats
Deng, Chuang, and Schuh, Christopher A. Atomistic Simulation of Slow Grain Boundary Motion. United States: N. p., 2011.
Web. doi:10.1103/PhysRevLett.106.045503.
Deng, Chuang, & Schuh, Christopher A. Atomistic Simulation of Slow Grain Boundary Motion. United States. https://doi.org/10.1103/PhysRevLett.106.045503
Deng, Chuang, and Schuh, Christopher A. Tue .
"Atomistic Simulation of Slow Grain Boundary Motion". United States. https://doi.org/10.1103/PhysRevLett.106.045503. https://www.osti.gov/servlets/purl/1386867.
@article{osti_1386867,
title = {Atomistic Simulation of Slow Grain Boundary Motion},
author = {Deng, Chuang and Schuh, Christopher A.},
abstractNote = {Existing atomistic simulation techniques to study grain boundary motion are usually limited to either high velocities or temperatures and are difficult to compare to realistic experimental conditions. Here we introduce an adapted simulation method that can access boundary velocities in the experimental range and extract mobilities in the zero driving force limit at temperatures as low as ~0.2Tm (Tm is the melting point). In conclusion, the method reveals three mechanistic regimes of boundary mobility at zero net velocity depending on the system temperature.},
doi = {10.1103/PhysRevLett.106.045503},
journal = {Physical Review Letters},
number = 4,
volume = 106,
place = {United States},
year = {Tue Jan 25 00:00:00 EST 2011},
month = {Tue Jan 25 00:00:00 EST 2011}
}
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Figures / Tables:
Fig. 1: (color online). (a) Schematic and atomistic configuration of the computational cell for an A1 Σ7 GB at 750 K, with atoms colored according to local crystal structure. The simulation cell dimensions {Lx, Ly, Lz} are {15.8, 1.4, 18.3} nm. (b) Schematic showing the definition of GB displacement $\overline{d}$(i)more »
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Figures / Tables found in this record:
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