A new type of bake-hardenable high strength steel was developed and various properties required for application to car body parts were investigated, with the following conclusions: BH-Y of approximately 80 MPa and BH-T of approximately 60 MPa were obtained with the developed steel by paint baking after deformation at a strain rate of more than 10 %. The developed steel shows good formability, equal to that of conventional steel of the same TS grade. The measured fatigue limit of the developed steel was increased significantly by strain age hardening. The dynamic absorbed energy of the developed steel was increased by strain age hardening, corresponding to an increase in tensile strength of approximately 60 MPa. Changes in the mechanical properties of the developed steel during room temperature aging were very small. Crashworthiness, as evaluated using a hat-shaped square column simulating car body parts, was improved, corresponding to an increase in tensile strength of 60 MPa or a reduction in sheet thickness of 0.1 mm.


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    Title :

    Development of hot-rolled sheet steel with the significant increase in tensile strength induced by strain age hardening


    Additional title:

    Entwicklung von warmgewalztem Stahlblech mit signifikantem Anstieg der Zugfestigkeit durch kontrolliertes Altern


    Contributors:
    Kaneko, S. (author) / Hiramoto, J. (author) / Matsuoka, S. (author) / Tosaka, A. (author) / Sakata, K. (author)


    Publication date :

    2002


    Size :

    6 Seiten, 9 Bilder, 3 Tabellen, 11 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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    High Strength Hot-rolled Sheet Steel with Excellent Crashworthiness Induced by Strain Age Hardening

    Kaneko, S. / Hiramoto, J. / Matsuoka, S. et al. | British Library Conference Proceedings | 2001


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