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Lattice defects are deviations from the ideal structure of a regular lattice structure (crystal). In this video we look at the various lattice defects in a metal. 00:00 Lattice defects 00:59 Point-shaped lattice defects 01:22 Vacancy 02:41 Substitution atoms 03:09 Intercalation atoms 04:01 Linear lattice defects 04:26 Edge dislocation 05:16 Screw dislocation 06:36 Planar lattice defects 06:52 Grain boundary 08:54 Small-angle grain boundary 09:20 Twin grain boundary 10:13 Phase boundary 11:40 Stacking fault 12:12 Volume-shaped lattice defects