Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
J. Phys. IV France 03 (1993) C7-1731-C7-1735
A new method of making metal matrix fibre reinforced materialsJ. SCHAUPP1 and R. PRÜMMER2
1 Institut für Werkzeugmaschinen und Betriebstechnik, University of Karlsruhe, Germany
2 Ernst-Mach-Institut, Freiburg, Germany
MMC (metal matrix composites) made of ceramic fibres and metal matrix are suitable for high strength and high temperature applications. New types of ceramic fibres usually are incorporated into a metal matrix by means of liquid infiltration or by hot pressing techniques. The disadvantage of these methods is the chemical reaction sometimes occurring between fibre and matrix, resulting in an interlayer which is degrading the mechanical properties of the MMC. A new method is described starting with an arrangement of metal powder or metal foils with ceramic fibres. Dynamic pressures, released by detonation of proper explosives, are used for consolidation. At very high strain rates during plastic deformation of the powder or metal foils hydrodynamic flow of the matrix around the ceramic fibres allows a complete consolidation and to prevent cracking. Fibres made of SiC are embedded into a metal matrix of aluminum.
© EDP Sciences 1993