Lecture
This lecture covers the crystal structures of metals and alloys, focusing on cubic lattices and Miller indices. It explains the coordination numbers, packing factors, and densities of different crystal systems, such as simple cubic, body-centered cubic, and face-centered cubic. The instructor discusses the relationship between atomic radius and lattice parameters, as well as the calculation of atomic packing factors. Examples of crystal structures in various metals are provided, emphasizing the importance of understanding crystallographic planes and directions.