The discussion centers on the prevalence and characteristics of edge, screw, and mixed dislocations in materials science. It is established that mixed dislocations are the most common type due to the complex nature of real materials, which often contain both edge and screw components. A professor estimated that edge dislocations constitute about 10-20% in typical metallic crystals, although this figure may vary based on specific lattice structures. The conversation highlights the importance of temperature on dislocation stability, with edge dislocations being more stable at high temperatures and screw dislocations at low temperatures.
PREREQUISITESMaterials scientists, metallurgists, and engineers focused on dislocation theory, particularly those working with alloys and polycrystalline metals.
). I've no idea how accurate that estimate is - it does make sense "a somewhat" - but the problem as I see it is the answer is specific (like lattice dependent for one) and in reality the classification is quite difficult since our edge and screw models are only components of the real ones with all their jogs and complicated arrays. I'll see what Cottrell for one has to say.Typically, edge dislocations are stabilized (possibly, they have a very low mobility) at high temperatures, and screw dislocations at low temperatures.scott_alexsk said:
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