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combine, they form a separate dislocation with a burgers vector that is not in the slip plane. This is the Lomer–Cottrell dislocation. It is sessile and immobile in the slip plane, acting as a barrier against other dislocations in the plane. The trailing dislocations pile up behind the Lomer–Cottrell
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The resulting dislocation is along the crystal face, which is not a slip plane in FCC at room temperature.
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When two perfect dislocations encounter along a slip plane, each perfect dislocation can split into two
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dislocation, and an ever greater force is required to push additional dislocations into the pile-up.
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145:: a leading dislocation and a trailing dislocation. When the two leading
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417:{\displaystyle {\frac {a}{6}}+{\frac {a}{6}}\rightarrow {\frac {a}{3}}}
325:{\displaystyle {\frac {a}{2}}\rightarrow {\frac {a}{6}}+{\frac {a}{6}}}
238:{\displaystyle {\frac {a}{2}}\rightarrow {\frac {a}{6}}+{\frac {a}{6}}}
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153:ex. FCC lattice along {111} slip planes
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63:"Lomer–Cottrell junction"
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156:|leading| |trailing|
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104:February 2024
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