A wider usage of hot rolled high strength steels (HRHSSs) are intensively studied for more complicated underbody structural parts of cars now.With an emphasis placed on the improvement of sheared-edge flangeability, we have developed new types of HRHSSs ranging from 440N/mm2 to 690N/mm2 in ultimate tensile strength (UTS). The microstructure and chemistry of these steels were controlled: The hard second phase in the polygonal ferrite matrix was controlled both by adjusting the chemical composition, mainly, silicon-content, and by applying thermomechanical treatment to a hot strip mill.Compared to conventional high strength steels such as a high-carbon, low-silicon steel and a niobium-bearing steel, various formability-performances of the developed steels were found to be good.


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    Titel :

    Newly Developed Hot Rolled High Strength Steel Sheets and Their Formability


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Sudo, Chuzo (Autor:in) / Fukuyama, Harunari (Autor:in) / Kunishige, Kazutoshi (Autor:in) / Komatsubara, Nozomi (Autor:in) / Nomura, Sigeki (Autor:in) / Nakai, Syuji (Autor:in) / Hirose, Yozoh (Autor:in)

    Kongress:

    International Congress & Exposition ; 1993



    Erscheinungsdatum :

    1993-03-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Kunishige,K. / Komatsubara,N. / Hirose,Y. et al. | Kraftfahrwesen | 1993


    Effects of Microstructures on Formability in Hot Rolled High Strength Steel Sheets

    Kimura, Hiroshi / Osawa, Koichi / Kinoshita, Masayuki et al. | SAE Technical Papers | 1993


    Effect of microstructures on formability in hot rolled high strength steel sheets

    Kimura,H. / Ogura,T. / Kinoshita,M. et al. | Kraftfahrwesen | 1993


    The edge formability of high-strength cold-rolled steel

    Adamczyk,R.D. / Dickinson,D.W. / Krupitzer,R.P. et al. | Kraftfahrwesen | 1983


    The Edge Formability of High-Strength Cold-Rolled Steel

    Dickinson, David W. / Adamczyk, Ronald D. / Krupitzer, Ronald P. | SAE Technical Papers | 1983