Recent trends in the automotive industry towards improved safety standards and reduced weight car bodies as well as a more rational and cost effective manufacturing have led to great interest in high strength and 'super' tough steels. The newly developed light weight austenitic high manganese TRIP (transformation induced plasticity)/TWIP (twinning induced plasticity) - steels with certain amounts of aluminium and silicon exhibit high flow stress (600 to 1100 MPa), extremely large elongations (60 to 95 %) and an extraordinary specific impact energy (0,4 to 0,5 Jmm-3) even at crash-like strain rates of about 102 to 103 s-1. High manganese steels with excellent formability, such as deep drawing and stretch forming operations at high strain rates exhibit an extraordinary shock resistance and impact strength for axial, side and off-set impact loading in car crash situations. The high strength properties of these low cost steels and the reduced specific weight lead to an overall weight reduction of the car bodies of about 15 to 25 %.


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    Title :

    High strength TRIP/TWIP steels for crash resistance of structural car body parts


    Additional title:

    Hochfeste TRIP (umwandlungsinduzierte Plastizität)/TWIP (zwillingsbildungsinduzierte Plastizität)-Stähle für den Kollisionswiderstand von Karosserieteilen


    Contributors:


    Publication date :

    1998


    Size :

    11 Seiten, 8 Bilder, 2 Tabellen, 11 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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