Entwicklung von faser- und partikelverstaerkten Leichtmetall-Verbundwerkstoffen (LMV) fuer den Einsatz im Automobilbau

Particle- and fiber-reinforced light metal materials are produced in special processes for the application in aeronautics and space flight. Its technological characteristics are clearly better than the characteristics of not reinforced light metal alloys. The aim of the research work was then development of a casting process for the quantity production of parts consisting of magnesium fiber composite materials. The favourable use of these materials should be made possible in the automotive industry, especially in engines. A process safe production method could not be developed, neither in the squeeze nor in the die casting process. In die casting, the production of fiber composite structures was not possible. The structures which were produced by squeeze casting were not shrinkage-free or free of defects. The precondition for good mechanical characteristics is that the structures are shrinkage-free. The magnesium fiber composite material is so brittle that the smallest defect leads to an early failure. As to the hardness and the compression strength, a clear increase could be achieved. A clear increase of the tensile strength could not be achieved. As to the actual state of technique, a squeeze casting process for the production of magensium fiber composite not to be realized. (orig.)SIGLEAvailable from TIB Hannover: F94B1145+a+b / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman