Machinability study of manganese alloyed austempered ductile iron

Hegde, Ananda and Sharma, S S (2018) Machinability study of manganese alloyed austempered ductile iron. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40 (338). ISSN 1678-5878

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Abstract

Austempered ductile iron (ADI) is a heat-treated ductile cast iron with ausferrite microstructure. ADI has high strength and hardness with good ductility and toughness. However, because of the high strength and hardness of ADI, there is a concern regarding its machinability. In the present study, machinability of ADI is assessed using tool life and the surface roughness. Machining tests are conducted using Taguchi experimental design. The effects of machining parameters, heat treatment parameters, on manganese alloyed ADI in the dry turning operation are studied and it was found that austempering temperature and cutting speed have the major contributions on tool life, whereas feed rate has the major contribution on surface roughness of the material within the range of values under study. Metallographic study has revealed coarser structure at higher austempering temperature of 420� which resulted in better tool life. 0.64 wt% of manganese in the ADI has resulted in lower surface roughness value.

Item Type: Article
Uncontrolled Keywords: Machinability � Manganese � ADI � Austenitization � ustempering
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 26 Jun 2018 04:39
Last Modified: 26 Jun 2018 04:39
URI: http://eprints.manipal.edu/id/eprint/151340

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