Mesoscale cyclic crystal plasticity with dislocation substructures
نویسندگان
چکیده
منابع مشابه
Mesoscale theory of grains and cells: crystal plasticity and coarsening.
Crystals with spatial variations in their axes naturally evolve into cells or grains separated by sharp walls. At high temperatures, polycrystalline grains form from the melt and coarsen with time: the dislocations can both climb and glide. At low temperatures under shear the dislocations (which allow only glide) form into cell structures. We present here a mesoscale theory of dislocation motio...
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/department of mechanical engineering Introduction In plastic deformations, which arise due to the motion of dislocations in crystalline microstructure, size effects cannot be neglected at a small scales of observation. Within each grain of a polycrystal, the grain boundaries act as natural obstacles to dislocation motion. Due to the stresses dislocations exert onto each other, dislocations wil...
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ژورنال
عنوان ژورنال: International Journal of Plasticity
سال: 2017
ISSN: 0749-6419
DOI: 10.1016/j.ijplas.2017.06.002