4020-F-2011-Lec 9 Precip.Hardening-Cambridge

4020-F-2011-Lec 9 Precip.Hardening-Cambridge - Obstacles to...

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13 AM Donald Crystalline Solids Obstacles to Dislocation Motion Many objects can impede dislocation motion: ? Other dislocations ? Precipitates ? Grain boundaries Dislocation Interactions When dislocations intersect, jogs and kinks are formed. A kink is a step in the dislocation line in the slip plane: A kink in an edge dislocation (left) and a screw dislocation (right).
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