Magnesium sheet has received increasing interest for automotive body and closure applications. However, implementation of these applications faces many challenges involving room temperature formability. Hemming a closure panel with a magnesium outer panel will be difficult because of the sharp bend radius. Bending behavior of AZ31B-O at elevated temperatures was investigated to approximate the hemming of closure panels with acceptable surface appearance. Surface quality from small-radius bending was quantified as a function of temperature between 180 and 300 degree C. Flanging with a 1.5 mm die radius yielded an acceptable surface quality at 210 degree C and higher. Hemming required a minimum temperature of 270 degree C for an acceptable surface condition with a 2 mm outer radius. The complex pattern of grain size and morphology of the deformed microstructure was documented with respect to the elevated temperature deformation behavior of Mg alloys. These results suggest that Mg can be hemmed at elevated temperatures with a small radius ((similar to)11/2 times the sheet thickness) and therefore could be used for vehicle closures.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Warm hemming of magnesium sheet


    Beteiligte:
    Carsley, John (Autor:in) / Kim, Sooho (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2007


    Format / Umfang :

    8 Seiten, 16 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Hemming of aluminum automotive sheet

    Mattei, L. / Daniel, D. / Guiglionda, G. et al. | Tema Archiv | 2008


    Hemming structure and hemming method for hybrid-type door

    CHOI KI HYUN | Europäisches Patentamt | 2024

    Freier Zugriff

    HEMMING STRUCTURE AND HEMMING METHOD FOR HYBRID-TYPE DOOR

    CHOI KI HYUN | Europäisches Patentamt | 2019

    Freier Zugriff

    Warm forming of magnesium sheet metal

    Siegert,K. / Jaeger,S. / Univ.Stuttgart,DE | Kraftfahrwesen | 2004


    Warm Forming of Magnesium Sheet Metal

    Siegert, K. / Jager, S. / Society of Automotive Engineers | British Library Conference Proceedings | 2004