IJCRRI Journ Cur Res ReInternational Journal of Current Research and ReviewI Journ Cur Res Re2231-21960975-5241Radiance Research Academy1901TechnologyEFFECT OF PROCESSING PARAMETERS ON HARDNESS AND MICROSTRUCTURE OF AUSTEMPERED DUCTILE IRON PandaRanjit KumarDhalJyoti PrakashMishraSubash ChandraSenSudipta1621This article is copyright of Popeye Publishing, 20092009This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0) Licence. You may share and adapt the material, but must give appropriate credit to the source, provide a link to the licence, and indicate if changes were made.

In the present investigation the effect of copper along with the process variables (austempering temperature and austempering time) on hardness and microstructure of ductile iron is studied. With increasing austempering time hardness is increasing but with increasing austempering temperature it is decreasing. Austempered ductile iron with copper is showing some higher hardness than the austempered ductile iron without copper. In microstructure ferrite is increasing with increasing austempering time and austenite is increasing with increasing austempering temperature in both the grades

Austempering austempered ductile iron austenite ferrite and acicular.