Strength of Metals and Alloys. Proceedings of the 5th International Conference, Aachen, Federal Republic of Germany, August 27-31, 1979. Volume 1: Plasticity and crystal structure; Friction and wear; Creep; Dynamic effects in deformation; Precipitation and dispersion hardening. Volume 2: Deformation of polycrystals; Solid solution hardening; Fatigue; In-situ electron microscopy during deformation;