This book introduces the physical mechanism of the plastic deformation of solids, which relies essentially on the occurrence and motion of dislocations. These are linear defects, specific of crystalline solids whose motion under external stresses explains the relative ease by which solids (metals in particular) can be deformed in order to give them desired shapes. The objective is to introduce the topic to undergraduate students, restricting to the main ideas and showing their relevance in interpreting phenomena well known to everyone (e.g. why are certain metals harder than others?), and finally training the students in the practice of calculating the simplest properties of dislocations.
Brief Introductions to the Basic Notions of Crystal Geometry and the Mechanics of Continuous Media; Classification and Description of Defects in Crystals; Geometry of Dislocations, Burgers Vector; Strain and Stress Fields Generated by Dislocations; Effect of a Stress Field on a Dislocation; Interaction Between Dislocations; Interaction with the Crystal Lattice; Mechanisms of Generation of Dislocations; General Principles Governing the Plastic Behaviour of a Solid Material, as well as the Dependence of this Behaviour on the Chemical and Structural Nature of a Solid and of Its Temperature; Problems Given at Examinations and Their Solution.