Grain Boundary Sliding along Special Asymmetric Grain Boundaries in the Al Bicrystals: Atomistic Molecular Dynamics Simulation

2021 ◽  
Vol 122 (11) ◽  
pp. 1103-1111
Author(s):  
L. E. Kar’kina ◽  
I. N. Kar’kin ◽  
Yu. N. Gornostyrev
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Grain Boundary Sliding ◽  
Dynamics Simulation ◽  
Boundary Sliding

Two-Dimensional Molecular Dynamics Simulation for Studying of Grain Refinement

2016 ◽  
Vol 838-839 ◽  
pp. 361-366 ◽  
Author(s):  
Julia A. Baimova ◽  
Sergey V. Dmitriev
Keyword(s):  
Molecular Dynamics ◽  
Plastic Deformation ◽  
Molecular Dynamics Simulation ◽  
Grain Refinement ◽  
Simulation Method ◽  
Grain Boundary Sliding ◽  
Dynamics Simulation ◽  
Shear Stresses ◽  
Two Dimensional ◽  
Boundary Sliding

The molecular dynamics simulation method in two-dimensional case is presented for the simulation of grain refinement and can be applied to the investigation of grain boundary sliding and defects movement under severe plastic deformation. Nanopolycrystalline system is shown as the example of the application of the method proposed. Atomistic details of structure formation and grain growth (refinement) are shown by the example of change of loading scheme. It was shown that elongated grains which appear under plastic deformation can grow up even larger or be destroyed, depending on the direction of the applied maximal shear stresses.

scholarly journals Recrystallization from a Three-Grain Crystalline Iron

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Bo Zhao ◽  
Shanshan Chen ◽  
Jinfan Huang ◽  
Lawrence S. Bartell
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Solid State ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Misorientation Angle ◽  
Dynamics Simulation ◽  
Iron Nanoparticle ◽  
Critical Nuclei ◽  
Solid State Recrystallization

The solid state recrystallization and grain boundary migrations in an iron nanoparticle Fe2616 with three grains were studied by a molecular dynamics simulation. It was found that nucleation rates could be determined as the smaller grains were consumed by the larger ones. Moreover, the grain disorder was more important than the misorientation angle in governing the rates. Suggestions about the critical nuclei for the recrystallization are proposed. No obvious interaction between the grain boundaries was observed in the example studied in this report.

scholarly journals The shear response of copper bicrystals with Σ11 symmetric and asymmetric tilt grain boundaries by molecular dynamics simulation

Nanoscale ◽  
2015 ◽  
Vol 7 (16) ◽  
pp. 7224-7233 ◽  
Author(s):  
Liang Zhang ◽  
Cheng Lu ◽  
Kiet Tieu ◽  
Xing Zhao ◽  
Linqing Pei
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Shear Deformation ◽  
High Strength ◽  
Stacking Fault ◽  
Boundary Plane ◽  
Dynamics Simulation ◽  
Grain Boundary Plane

The dissociated stacking fault from the grain boundary plane can increase ductility while retaining the high strength of the Cu bicrystal model under shear deformation.

Sign in / Sign up

Export Citation Format

Share Document