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.
Novel materials for the car industry
Neue Materialien für die Fahrzeugindustrie
1994
7 Seiten, 4 Bilder, 2 Quellen
Conference paper
English
Automobilindustrie , Materialforschung , Werkstoffeignung , Verbundwerkstoff , Innovation , Gewichtsverminderung , Kohlenstoff , Matrix (Grundmasse) , Porosität , mechanische Eigenschaft , Temperaturverhalten , Biegefestigkeit , Aluminiumlegierung , Werkstoffermüdung , Spannungsverlauf (mechanisch) , Werkstoffbeanspruchung , Forschung , Gebrauchseignung , Werkstoffwahl , Grundwerkstoff , Ermüdung
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