ABSTRACT
The microscopic viewpoint deals with the physical explanation of plasticity and establishes the relationship between plastic behavior and the interatomic forces that act within the crystalline structure of a metal. Elastic deformation is usually defined as a change in the dimensions that are directly proportional to and in phase with an increase or decrease in the applied force [1]. In elastic deformation a limited distortion of the crystal lattice occurs and as soon as the force is removed, the distortion disappears as shown in Fig. 9.1.
