alexa Development and Wear Analysis of Carbidic Austempered Ductile Iron (CADI)
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
Open Access

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Research Article

Development and Wear Analysis of Carbidic Austempered Ductile Iron (CADI)

S A Patil1, S U Pathak 2 ,Ajay Likhite2
  1. Ph.D. Scholar, Dept. of MME VNIT Nagpur, Maharashtra, India
  2. Dept. of MME VNIT Nagpur, Maharashtra, India
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Abstract

The abrasion wear resistance of iron is improved by the incorporation of an extra phase in the matrix, typically consist of carbides. The objective of the present work is to produce carbides in a ductile cast iron which is subsequently austempered, to obtain the carbidic austempered ductile iron (CADI). Two variants of (CADI)were produced by heating carbidic ductile iron (CDI) to a austenitization temperature of 9000C for the period of 1hr and quenching in salt bath at temperature range 2500C,3250Cand 4000C for the period of 1hr, 2hr, 3hr respectively. The microstructural characteristics of the produced CADI were evaluated by optical microscope. The abrasion wear resistance was evaluated by testing in accordance with ASTM G 99 standard. Carbidic ductile iron (CDI) as-cast samples were taken as reference material to determine the relative wear resistance index E. The results obtained, allow to establishing a relationship between Cr content in the alloy, austempering parameters, microstructure and mechanical properties of CADI. It was found that increase in the CE, content in CADI increases the volume fraction of Carbides in an alloy which resulted in to enhancement in hardness and wear resistance.

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