Dislocation-induced stress in polycrystalline materials: mesoscopic simulations in the dislocation density formalism
نویسندگان
چکیده
منابع مشابه
Dislocation Avalanche Polycrystalline Nickel
Self-organized criticality (SOC) is widely observed in systems ranging from creep deformation of single crystal ice to the movement of glacier. -The behavior of these SOC systems follows a power law distribution, which is timeand space-scale invariant. Previous phase field simulation of single crystal nickel has shown that plastic flow is characterized by intermittent dislocation avalanches, wh...
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We derive general relations between grain boundaries, rotational deformations, and stress-free states for the mesoscale continuum Nye dislocation density tensor. Dislocations generally are associated with long-range stress fields. We provide the general form for dislocation density fields whose stress fields vanish. We explain that a grain boundary a dislocation wall satisfying Frank’s formula ...
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................................................................................................................ ii ACKNOWLEDGEMENTS ...................................................................................... iv LIST OF FIGURES ................................................................................................. viii LIST OF TABLES ...........................................
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ژورنال
عنوان ژورنال: Modelling and Simulation in Materials Science and Engineering
سال: 2018
ISSN: 0965-0393,1361-651X
DOI: 10.1088/1361-651x/aab277