In the early 1980's, some promising research and development efforts focused on powder metallurgy revealed that aluminum alloys containing 4 wt% cerium exhibit high temperature mechanical properties exceeding those of the best commercial aluminum casting alloys currently in production. Cerium oxide is an abundant rare earth oxide that is often discarded during the refining of more valuable rare earths such as Nd and Dy. Therefore, the economics are compelling for cerium as an alloy additive. In this paper, we report select results obtained during an investigation of the castability of aluminum-cerium alloys and determine compositional modifications that may be required to ensure the compatibility of the alloy with near net shape casting methods such as advanced sand casting, die casting, permanent mold casting and squeeze casting. Al-Ce alloys were cast in binary composition of 6-16 wt% Ce. Commercially pure aluminum ingots were melted and held at approximately 785°C. Ternary and quaternary alloys with Si and Mg additions were also investigated. Test bars were cast to establish mechanical properties and step plates and hot tear molds were used to determine sensitivity to solidification conditions and hot tearing sensitivity respectively. Finally, air cooled engine cylinder heads were cast in sand molds to get a sense of castability in complicated shape castings.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    High Performance Aluminum Casting Alloys for Engine Applications


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE/JSAE 2016 Small Engine Technology Conference & Exhibition ; 2016



    Publication date :

    2016-11-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    High Performance Aluminum Casting Alloys for Engine Applications

    Weiss, David | British Library Conference Proceedings | 2016


    Ductile aluminum high-pressure die casting alloys for automotive applications

    Koch, Hubert / Franke, Rüdiger | Tema Archive | 2004


    Performance of laser processed aluminum alloys for engine bore applications

    Hopkins, J.A. / McCay, M.H. / Dahotre, N. et al. | Tema Archive | 1998


    Performance of laser processed aluminum alloys for engine bore applications

    Hopkins,J.A. / McCay,M.H. / Dahotre,N. et al. | Automotive engineering | 1998


    Performance of Laser Processed Aluminum Alloys for Engine Bore Applications

    Schwartz, Fred / Hopkins, John A. / McCay, Mary Helen et al. | SAE Technical Papers | 1998