S18  Processos Mecânico-Metalúrgicos    Titulo: MODELING SOLIDIFICATION AND MUSHY ZONE DEFORMATION OF ALLOYS   Resumo : THE DEFORMATION OF THE PARTIALLY SOLIDIFIED STRAND DURING NEAR NET SHAPE CONTINUOUS CASTING OF THIN SLABS IS ONLY ONE EXAMPLE OF A TECHNOLOGICALLY IMPORTANT PROCESS WHERE A MUSHY ZONE IS MECHANICALLY ALTERED IN ORDER TO ACHIEVE IMPROVED GRAIN STRUCTURES AND HOMOGENEITY. HOWEVER, THE PHENOMENA OCCURRING DURING PLASTIC DEFORMATION OF A SOLIDIFYING MUSH ARE POORLY UNDERSTOOD, HAVE NOT BEEN OBSERVED DIRECTLY, AND HAVE NOT BEEN MODELED IN DETAIL. A MATHEMATICAL MODEL THAT PREDICTS THE TEMPERATURE AND SOLID FRACTION PROFILES, LIQUID CONCENTRATION EVOLUTION, AND SOLID PHASE DISPLACEMENT DURING THE DEFORMATION OF A SOLIDIFYING MUSH IS PRESENTED. THIS MODEL IS DERIVED CONSIDERING A TWO-DIMENSIONAL CASE, THE VOLUME AVERAGING METHOD, THE ENTHALPY TECHNIQUE, AND A COORDINATE TRANSFORMATION TO AVOID A CHANGING MESH IN A NUMERICAL SOLUTION. THE NUMERICAL RESULTS ARE FOUND TO MATCH THE EXPERIMENTAL BEHAVIOR OF METALLIC ALLOYS DURING SOLIDIFICATION WITH OR WITHOUT DEFORMATION. KEY WORDS: NEAR NET SHAPE, SOLIDIFICATION, DEFORMATION, VOLUME AVERAGING, AND MODELING.     Autores : Beckermann, C. 0 Raghavendra, V. 0 Rizzo, Ernandes M. S. Santos, Rezende Gomes dos     Trabalho Completo :   COBEM99 | Comissão  Organizadora | Palestras | Sessões Técnicas | Autor | Simpósios e Sessões Especiais | Revisores |  Título  dos  Trabalhos | Local