Comment on “Toward realistic molecular dynamics simulations of grain boundary mobility” by Zhou and Mohles

2012 ◽  
Vol 66 (9) ◽  
pp. 714-716 ◽  
Author(s):  
Elizabeth A. Holm ◽  
Stephen M. Foiles ◽  
Eric R. Homer ◽  
David L. Olmsted
Keyword(s):  
Molecular Dynamics ◽  
Grain Boundary ◽  
Molecular Dynamics Simulations ◽  
Boundary Mobility ◽  
Grain Boundary Mobility ◽  
Dynamics Simulations

Grain Growth Stagnation Caused by the Grain Boundary Roughening Transition

2012 ◽  
Vol 715-716 ◽  
pp. 415-415
Author(s):  
Elizabeth A. Holm ◽  
Stephen M. Foiles
Keyword(s):  
Molecular Dynamics ◽  
Transition Temperature ◽  
Grain Boundary ◽  
Molecular Dynamics Simulations ◽  
Grain Growth ◽  
Boundary Mobility ◽  
Grain Boundary Mobility ◽  
Annealing Temperatures ◽  
Roughening Transition ◽  
Dynamics Simulations

Molecular dynamics simulations of bicrystals show that grain boundaries undergo a thermal roughening transition, and the grain boundary mobility increases abruptly when the boundary roughens. The roughening transition temperature varies widely from boundary to boundary, ranging from less than 0.4 to more than 0.9 of the melting temperature. Thus, at typical annealing temperatures we expect polycrystals to contain both smooth (slow) and rough (fast) boundaries, with the fraction of each type varying with temperature.

scholarly journals Grain Boundary Motion under Dynamic Loading: Mechanism and Large-Scale Molecular Dynamics Simulations

2013 ◽  
Vol 1 (4) ◽  
pp. 220-227 ◽  
Author(s):  
Christian Brandl ◽  
Timothy C. Germann ◽  
Alejandro G. Perez-Bergquist ◽  
Ellen K. Cerreta
Keyword(s):  
Molecular Dynamics ◽  
Grain Boundary ◽  
Molecular Dynamics Simulations ◽  
Dynamic Loading ◽  
Large Scale ◽  
Boundary Motion ◽  
Dynamics Simulations ◽  
Grain Boundary Motion
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