Macrorhelogical Theory of High-Temperature Deformation of Powder Materials under SHS Compaction

摘要

the present work surveys the results of mathemati- cal modelling of deformation and thermal processes of SHS compaction of advanced ceramics. Various regimes of SHS compaction have been studied based on a rheodynamic model. The model takes into account the initial density distribution throughout the material and the nonsteady state of the process. The wave regime and the regime having a zone of Decreased density in the centre of the specimen are Discussed. The influence of delay time on the pro- Cess of densification is described. It is shown how The model developed facilitates solution of practical Problems of that process.