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    Neutron Diffraction Study on Residual Stress in Aluminum Engine Blocks Following Machining and Service Testing

    Neutron Diffraction Study on Residual Stress in Aluminum Engine Blocks Following Machining and Service Testing


    Development of lightweight alloys suitable for automobile applications has been of great importance to the automotive industry in recent years. The use of 319 type aluminum alloy in the production of gasoline engine blocks is an example of this shift towards light alloys for large automobile components. However, excessive residual stress along the cylinder bores of these engine blocks may cause problems during engine operation. Therefore, in this study, neutron diffraction was used to evaluate residual stresses along the aluminum cylinder bridge and the gray cast iron liners. The strains were measured in the hoop, radial, and axial orientations, while stresses were subsequently calculated using generalized Hooke's law. The results suggest that the residual stress magnitude for the aluminum cylinder bridge was tensile for all three measured components and gradually increased with cylinder depth towards the bottom of the cylinder. The residual stress in the gray cast iron liner was highly compressive with a relatively constant stress magnitude.

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    Title :

    Neutron Diffraction Study on Residual Stress in Aluminum Engine Blocks Following Machining and Service Testing

    Additional title:

    Sae Int. J. Mater. Manf
    Sae International Journal of Materials and Manufacturing

    Contributors:
    Lombardy, Anthony (author) / Ravindran, C. (Ravi) (author) / Sediako, Dimitry (author) / D'Elia, Francesco (author) / Mackay, Robert I. (author)
    Conference:

    SAE 2012 World Congress & Exhibition ; 2012

    Published in:

    Sae International Journal of Materials and Manufacturing ; 5 , 1 ; 115-121

    Publication date :

    2012-04-16

    Size :

    7 pages

    ISSN :

    1946-3987 , 1946-3979

    DOI :

    https://doi.org/10.4271/2012-01-0188

    Type of media :

    Conference paper

    Type of material :

    Print

    Language :

    English

    Keywords :

    Aluminum alloys , Iron , Aluminum , Engine cylinders , Alloys , Aluminum engines

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