The growth of China's automotive industry and demands for automotive sheet steels are briefly reviewed. The current status of development of automotive sheet steels (including hot-rolled, cold-rolled and coated steels), especially for Nb-bearing steel in Baosteel is introduced. The future of automotive sheets in Baosteel is forecasted. At the same time, the effects of Nb and Ti on mechanical properties of a newly developed HSLA590 high strength galvannealed (GA) sheet steel are described. With the annealing temperature increasing from 800 deg C to 840 deg C, the grain size is at the same level for Nb-bearing steel. On the contrary, in Nb+Ti co-added steel, the grain size is coarsening. Compared to Ti, Nb-bearing steel has a better stability of the mechanical properties and better galvannealability. Tensile strength and yield strength decreased and elongation increased with the annealing temperature increasing from 780 deg C to 840 deg C. Compared to Nb+Ti co-added steel, Nb-bearing steel represented a higher TSxEL and a lower yield strength at the same annealing temperature. The precipitation state in the annealed steel is also discussed. The size of precipitation in Nb+Ti co-added steel is larger than that in Nb-bearing steel, which may be the main reason for the TS being higher in the Nb- bearing steel.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The application of Nb to automotive sheet steels in Baosteel


    Weitere Titelangaben:

    Einsatz von Nb zur Herstellung von Stählen für Fahrzeugbleche bei Baosteel


    Beteiligte:
    Wang, Li (Autor:in) / Feng, W. (Autor:in) / Liu, Xin (Autor:in) / Liu, Junliang (Autor:in) / Lu, Jiangxin (Autor:in)


    Erscheinungsdatum :

    2006


    Format / Umfang :

    7 Seiten, 7 Bilder, 3 Tabellen, 2 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Development of automotive lightweighting technology in Baosteel

    Wang, Li / Lu, Jiangxin | Tema Archiv | 2009



    Progress of automotive precoated sheet steels

    Ishihara, S. | Tema Archiv | 1983


    Advanced sheet steels for automotive applications

    Fekete, J.R. / Strugala, D.C. / Zhicong Yao | Tema Archiv | 1992


    Bauschinger Effect Response of Automotive Sheet Steels

    Levy, B. S. / Van Tyne, C. J. / Han, K. | SAE Technical Papers | 2005