The container effect on shape change during isostatic pressing. I. the stress deviator under isostatic pressing

摘要

The isostatic compaction of porous billet in incompressible container is considered. The behaviour of container as well as matrix phase of porous billet is supposed to be described by power law equations. The macroscopic deformation of billet is controlled by the flow theory of compressible body with smooth potential. It is established that the stress state in billet is no isostatic. The deviatoric contribution is estimated.