sessile dislocations

Is It Possible For Two Screw Dislocations Of Same Sign To Annihilate Each Other Explain Your Answer?

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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.

What Is Dislocation Strengthening Mechanism?

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What Is Dislocation Strengthening Mechanism? For this strengthening mechanism, solute atoms of one element are added to another, resulting in either substitutional or interstitial point defects in the crystal (see Figure 1). The solute atoms cause lattice distortions that impede dislocation motion, increasing the yield stress of the material. How many types of strengthening mechanisms