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Cast iron with magnesium induced spheroidised graphite

By University of Cambridge DoITPoMS and University of Leeds Department of Materials Dr R F Cochrane


Cast iron is a brittle material and it is advantageous to process it in such a way to improve its ductility. The brittleness is partially due to the graphite flakes which act as nucleation sites for cracks. Therefore it is an advantage to have the graphite present as spheres. This can be achieved by a heat treatment regime or by the addition of a small amount of Mg which poisons the graphite growth directions.

Topics: alloy, carbon, cast iron, iron, metal, spheroidal, doitpoms, university of cambridge, micrograph, corematerials, ukoer, Engineering, H000
Publisher: University of Leeds
Year: 2010
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Provided by: Jorum Open
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