The persistent occurrence of microporosity defects in AZ91 castings has made it difficult to consistently produce sound parts. Earlier work established that dissolved hydrogen gas causes microporosity defects in AZ91; however, the exact role of hydrogen in the nucleation and growth of microporosity was not determined. In this paper, the behavoir of dissolved hydrogen gas in elemental magnesium, AZ91 alloy, and liquid binary Mg/Al alloys was studied. The results show that during the last stages of solidification, hydrogen gas is rejected from the Mg17Al12 intermetallic compound to assist in the nucleation and/or growth of microporosity.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The Origin of Microporosity in Magnesium Alloy AZ91


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1994



    Erscheinungsdatum :

    01.03.1994




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    The origin of microporosity in magnesium alloy AZ91

    Shearouse,J.D. / Mikucki,B.A. / Dow Chemical,US | Kraftfahrwesen | 1994


    The Origin of Microporosity in Magnesium Alloy AZ91

    Shearouse, J. D. / Mikucki, B. A. / Society of Automotive Engineers | British Library Conference Proceedings | 1994


    Interdependence of Hydrogen and Microporosity in Magnesium Alloy AZ91

    Mikucki, Barry A. / Shearouse, James D. | SAE Technical Papers | 1993


    Interdependence of hydrogen and microporosity in magnesium alloy AZ91

    Mikucki,B.A. / Shearouse,J.D. / Dow Chemical,US | Kraftfahrwesen | 1993


    Nickel Foam Reinforced AZ91 Magnesium Alloy

    Qiu, K. Q. / Liu, Y. Q. / Suo, Z. Y. et al. | British Library Conference Proceedings | 2007