What Is Edge Dislocation And Screw Dislocation? The difference between edge and screw dislocation is that the edge dislocation occurs when an extra half-plane of atoms exists in the middle of the crystal lattice whereas the screw dislocation occurs when the planes of atoms in the crystal lattice trace a helical path around the dislocation
Why Do Grain Boundaries Act As Barriers To Dislocation Motion? Grain boundaries are usually considered as obstacles to dislocation motion (because they separate regions with different crystallographic orientations and/or because they are more disordered that the center of grains) and dislocations tend to pile-up at grain boundaries. How do grain boundaries interact with dislocations? Grain
Is It Possible For Two Screw Dislocations Of Same Sign To Annihilate Each Other Explain Your Answer? It is possible for two screw dislocations of opposite sign to annihilate one another if their dislocation lines are parallel. What are the two types of dislocations? Edge dislocations There are two types of dislocations: edge and screw.