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Effect Of Temperature On Ductility And Fracture Mechanisms Of 2124/SiCp Composite


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G.M. La Vecchia, C. Badinf & P. Cobelli


Effect of temperature on ductility and fracture mechanisms of 2124/SiCp composite G.M. La Vecchia\ C. Badinf & P. Cobelli^ ' Universita di Brescia, Dip. di Ingegneria Meccanica, Brescia, Italy Politecnico di Torino, Dip. di Scienia del Materiali e Ingegneria Chimica, Torino, Italy * Universita di Trento, Dip. di Ingegneria del Materiali, Trento, Italy Abstract The high production costs of metal matrix composites (MMCs) sustain the effort of increasing the use of near-net shape technologies. The need of obtaining structural components showing improved properties with respect to the semi- finished products (billets or ingots) imposes not only the choice of the proper manufacturing technology but, also, the selection of the optimised processing parameters in order to acquire a refined material microstructure without defects like microcracks. Among hot deformation processes, attractive for their relatively low cost, forging is particularly difficult to optimise because of the