THE BAUSCHINGER EFFECT, MASING MODEL AND THE RAMBERG-OSGOOD RELATION FOR CYCLIC DEFORMATION IN METALS

The present paper reviews and compares the Masing and the Ramberg-Osgo od interpretations of cyclic stress-strain behaviour and a more recent multi-component model that is closely related to the actual microstru cture established during cyclic deformation. Predictions of the Bausch inger effect are discussed and the Bauschinger effect is related to th e deformation-induced internal stresses. Furthermore, relationships be tween the models are established which can then be used to calculate e nergy expenditure during cyclic loading. It is shown that, based upon microstructural observations, the models also allow a prediction of th e cyclic stress-strain curve of materials under variable amplitude loa ding conditions. Finally, various examples are discussed where the cor relation between the Masing-type models and the microstructure can be used to relate the change in cyclic stress-strain response with temper ature to the microscopical processes. (C) 1997 Elsevier Science S.A.