Rotating the Axes that Describe a Stress State in 2D

Metallurgical Fundamentals, deals with the structural aspects of plastic deformation and fracture. Emphasis is on the atomistics of flow and fracture and the way in which metallurgical structure affects these processes. The concept of the dislocation is introduced early in Part Two and is used throughout to provide qualitative explanations for such phenomena as strain hardening, the yield point, dispersed phase hardening, and fracture. A more mathematical treatment of the properties of dislocations is given in a separate chapter. The topics covered in Part Two stem from physical metallurgy. However, most topics are discussed in greater detail and with a different emphasis than when they are first covered in the usual undergraduate course in physical metallurgy.Certain topics that are more physical metallurgy and mechanical metallurgy are included to provide continuity and the necessary background for readers who have not studied modern physical metallurgy. Part Three, Applications to Materials Testing, deals with the engineering aspects of the common testing techniques of mechanical failure of metals.