Abstract
Compacted Graphite Iron (CGI) is a type of cast iron with intermediate properties between grey and ductile cast iron. The vermicular graphite structure in the CGI provides unique properties to manufacture automotive and other engineering components. However, because of its narrow range of metallurgical control, a high volume of CGI production is not attempted in many foundries. The addition of alloying elements and austempering heat treatment process has a significant effect in altering the properties and microstructure of CGI. Hence, the objective of this paper is to review the influence of various alloying elements and austempering processes in manufacturing CGI components. Eventually, the scope for the research on the development of austempered CGI is identified.
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