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Title: Atomistic Simulations of Grain Boundary Pinning in CuFe Alloys

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.2137871· OSTI ID:878232

The authors apply a hybrid Monte Carlo-molecular dynamics code to the study of grain boundary motion upon annealing of pure Cu and Cu with low concentrations of Fe. The hybrid simulations account for segregation and precipitation of the low solubility Fe, together with curvature driven grain boundary motion. Grain boundaries in two different systems, a {Sigma}7+U-shaped half-loop grain and a nanocrystalline sample, were found to be pinned in the presence of Fe concentrations exceeding 3%.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
878232
Report Number(s):
UCRL-JRNL-212649; APPLAB; TRN: US200611%%85
Journal Information:
Applied Physics Letters, Vol. 87, Issue 23; ISSN 0003-6951
Country of Publication:
United States
Language:
English

References (11)

Deformation-mechanism map for nanocrystalline metals by molecular-dynamics simulation journal December 2003
Atomic structures of grain boundaries in copper - bismuth alloys: ab initio and empirical modelling journal March 1997
Atomistic Simulation of Curvature Driven Grain Boundary Migration journal February 1998
Atomistic studies of segregation and diffusion in Al-Cu grain boundaries journal March 1998
Thermodynamics of an empirical potential description of Fe–Cu alloys journal February 2005
Curvature driven grain boundary migration in aluminum: molecular dynamics simulations journal January 2005
A Maximum in the Strength of Nanocrystalline Copper journal September 2003
Bismuth-induced embrittlement of copper grain boundaries journal August 2004
Embedded atom potential for Fe-Cu interactions and simulations of precipitate-matrix interfaces journal January 1998
The impurity-drag effect in grain boundary motion journal September 1962
Bismuth embrittlement of copper is an atomic size effect journal December 2004

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