Two light-weight novel materials for car industry applications are presented in the present paper. The first one is a carbon-carbon composite material with an amorphous matrix and a controlled porosity in it. The mechanical properties of this C- composite are very good, and as the density is low, 1.25-1.35 g/cm3, its specific strength is very high. On the contrary to the conventional materials its strength values are increasing as a function of temperature upto 2000 deg C. The specific bending strength value at 1500 deg C is about 8 x 105 Nmm/g. The second novel material presented in this paper is an aluminium alloy with a sharp fatigue limit; i.e. material with an infinite fatigue life at stress amplitudes below a critical one. This material was developed by microalloying an Al-alloy with such elements that they are forming atom-pairs with an unhomogeneous stress field around them and by using a special processing technique.


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    Title :

    Novel materials for the car industry


    Additional title:

    Neue Materialien für die Fahrzeugindustrie


    Contributors:
    Kettunen, P.O. (author) / Gu, Q. (author) / Lepistö, T.K. (author)


    Publication date :

    1994


    Size :

    7 Seiten, 4 Bilder, 2 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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