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12 cards from this deck
Structural imperfections along a line in crystal lattice
One-dimensional imperfections extending through material
Dislocation
Incomplete row of atoms within crystal structure
Shear stress (forces sliding material parts)
From interior towards surface
Incomplete row of atoms creates high stress areas
Forms starting point for a crack
Makes materials harder or more brittle
Less energy needed than deforming perfect crystal
Accommodate applied stress
Internal dislocation → surface crack → complete failure
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