MD study of the finite temperature effects on the phase ordering, stacking fault energy, and edge dislocation core structure in elemental Pu and Pu–Ga alloys

2015 ◽  
Vol 457 ◽  
pp. 94-99 ◽  
Author(s):  
A.V. Karavaev ◽  
V.V. Dremov
Keyword(s):  
Edge Dislocation ◽  
Finite Temperature ◽  
Temperature Effects ◽  
Dislocation Core ◽  
Stacking Fault ◽  
Core Structure ◽  
Stacking Fault Energy ◽  
Dislocation Core Structure ◽  
Phase Ordering

The effect of shear stress on the screw dislocation core structure in body-centred cubic lattices

1973 ◽  
Vol 332 (1588) ◽  
pp. 85-111 ◽  
Keyword(s):  
Shear Stress ◽  
Screw Dislocation ◽  
Plastic Flow ◽  
Stacking Faults ◽  
Dislocation Core ◽  
Stacking Fault ◽  
Core Structure ◽  
Cubic Lattices ◽  
The Core ◽  
Dislocation Core Structure

The behaviour of the ½ a <111> screw dislocation core in the presence of an external shear stress on {110} planes has been studied for a variety of effective interionic potentials, each representing a stable b. c. c. lattice. The distortion and motion of the core are described using the concept of fractional dislocations, which are imperfect dislocations bounding a ribbon of generalized (unstable) stacking fault. Three essentially distinct types of movement are found, and the relation of these to plastic flow and twinning in real b. c. c. metals is discussed. It is found that the movement of the dislocation core can be rationalized in terms of the relative stresses needed to create generalized stacking faults on {110} and {112} planes.

scholarly journals Unraveling the dislocation core structure at a van der Waals gap in bismuth telluride

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
D. L. Medlin ◽  
N. Yang ◽  
C. D. Spataru ◽  
L. M. Hale ◽  
Y. Mishin
Keyword(s):  
Bismuth Telluride ◽  
Van Der Waals ◽  
Dislocation Core ◽  
Core Structure ◽  
Dislocation Core Structure
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