ANALYSIS OF Si-Mo S.G. IRON MANUFACTURING TECHNIQUES & THE EFFECTS OF HEAT TREATMENT ON ITS MICROSTRUCTURE USING IMAGE ANALYSIS TECHNIQUE

Abstract

In prevailing scenario ductile iron has been proved one of the Ferro-alloy that is known for its versatility and higher performance at lower cost than other members of ferrous casting family which often provides the designer with the best combination of overall properties. This versatility is especially evident in the area of mechanical properties where ductile iron offers the designers the option of choosing high ductility, with grades guaranteeing more than 18% elongation, or high strength, with tensile strength exceeding 825 MPa [2]. The ductile iron family is comprised of Spheroidal graphite nodules embedded in matrices such as ferrite, pearlite, tempered martensite or austenite. The Si Mo Spheroidal cast iron is new development of ductile iron family on which attention is focused presently. Here an attempt has been made for sorting out the best manufacturing process for this type of ductile iron among all manufacturing process for its wide application in automotive industry. ...