Molecular dynamics study of ductile properties in nanostructured materials with grain boundary dislocation sources

2014 ◽  
Vol 2014.27 (0) ◽  
pp. 66-67
Author(s):  
Tomoya MIYAKI ◽  
Tomotsugu SHIMOKAWA ◽  
Toshiyasu KINARI
Keyword(s):  
Molecular Dynamics ◽  
Grain Boundary ◽  
Nanostructured Materials ◽  
Boundary Dislocation ◽  
Dislocation Sources

Two Investigations into Grain Boundary Structure

1977 ◽  
Vol 35 ◽  
pp. 688-691
Author(s):  
P. Humble
Keyword(s):  
Grain Boundary ◽  
Dark Field ◽  
Boundary Structure ◽  
Boundary Dislocation ◽  
Bright Field ◽  
Intrinsic Structure ◽  
Weak Beam ◽  
Grain Boundary Structure ◽  
Independent Information ◽  
Diffraction Patterns

There has been sustained interest over the last few years into both the intrinsic (primary and secondary) structure of grain boundaries and the extrinsic structure e.g. the interaction of matrix dislocations with the boundary. Most of the investigations carried out by electron microscopy have involved only the use of information contained in the transmitted image (bright field, dark field, weak beam etc.). Whilst these imaging modes are appropriate to the cases of relatively coarse intrinsic or extrinsic grain boundary dislocation structures, it is apparent that in principle (and indeed in practice, e.g. (1)-(3)) the diffraction patterns from the boundary can give extra independent information about the fine scale periodic intrinsic structure of the boundary.In this paper I shall describe one investigation into each type of structure using the appropriate method of obtaining the necessary information which has been carried out recently at Tribophysics.

On the first steps of grain boundary dislocation stress relaxations in copper

2004 ◽  
Vol 95 (4) ◽  
pp. 223-225 ◽  
Author(s):  
J. P. Couzinié ◽  
B. Décamps ◽  
L. Priester
Keyword(s):  
Grain Boundary ◽  
Boundary Dislocation ◽  
Dislocation Stress
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