CHANGES IN MECHANICAL-PROPERTIES IN METAL-FORMING PROCESSES

This article presents a paradigm for the mechanical properties of a me tal that result from the plastic deformation that occurs in forming pr ocesses, including multiple-step or cyclic processes. Some of the new concepts included are a new strength designation that includes the sen se (tensile or compressive), the direction (longitudinal, transverse, etc.), the specific type of deformation (tensile, compressive, etc.); a concept of an equivalent strain; and the apparent rules of strain st rengthening. Examples of strength analyses are also included.