RECENT DEVELOPMENTS IN MODELING THE HOT-WORKING BEHAVIOR OF METALLIC MATERIALS

Three distinct trends in the modeling of hot working behavior of metal lic materials are identified. These are respectively (a) analytical an d numerical methods to characterize the material flow behavior and rel ated macroscopic properties, (b) metallurgical models to predict micro structural parameters at each step in a multi-step processing operatio n, and (c) hot workability models to predict optimum conditions of tem perature and strain rate for a single step deformation. Important feat ures of the models are critically examined and some possible direction s for future work indicated.