Abstract
The interaction of transonic edge dislocations with a sessile self-interstitial dislocation loop (SIL) in BCC tungsten is investigated using atomistic Molecular Dynamics method. The moving velocity of the transonic edge dislocations is higher than the transverse sound wave velocity. It was found that SIL has a strong pinning effect to the moving edge dislocations. The SIL was eventually annihilated through forming jogs on the moving edge dislocations. A transonic edge dislocation can be stopped by SIL at the pinning point, and then the resulting jogs could move above the sound barrier afterwards under high shear.
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