DISLOCATION MULTIPLICATION AND TRANSMISSION IN A BICRYSTAL
Random sources are introduced in a closed grain (lower dodecahedron).
A tensile applied stress is applied along the vertical axis. Sources are then activated and a pile up is observed on the grain boundary. When the stress at the head dislocation in the pile up is high enough, a dislocation crosses the grain boundary and enters the upper grain.
Such a situation naturally leads to the Hall-Petch relationship between the grain size and the yield stress.
Random sources are introduced in a closed grain (lower dodecahedron).
A tensile applied stress is applied along the vertical axis. Sources are then activated and a pile up is observed on the grain boundary. When the stress at the head dislocation in the pile up is high enough, a dislocation crosses the grain boundary and enters the upper grain.
Such a situation naturally leads to the Hall-Petch relationship between the grain size and the yield stress.
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