Assessment of the deformation of composites with aluminum matrix designed for the metal forming

Applying the metal forming for the production of machine parts from the composites in the aluminum alloy matrix will allow to widen the range of the practical application in this group of materials. In order to reach such results not only the reinforcement with ceramic particles into the matrix should be inserted but also the basic metal forming parameters of created composites must be set and verified. The article shows the results of plastometric research carried on the composites with AW-AlCu2SiMn alloy matrix. The research was conducted on the turning plastometer possessed by the Faculty of Mechanical Engineering of the Silesian Technology University. On the basis of the results the yielding curves were set in the system forming stress s - true deformation e. Good coating in the AW-AlCu2SiMn -SiC system causes limitation of the ability to deformation as a result of the separating boarder destruction and leads to destruction of the composite at the much lower deformation value and ductile stress. In case of the composites with glassy carbon as well as in homophases system (AW-AlCu2SiMn +15%WS) and heterophase (AW-AlCu2SiMn +15%(SiC+WS)) the ductile stress value increase as follows 10% and 20%.