Assessment of machining characteristics of austempered ductile iron

Polishetty, Ashwin and Littlefair, Guy 2010, Assessment of machining characteristics of austempered ductile iron, Advanced materials research, vol. 97-101, pp. 2036-2039.

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Title Assessment of machining characteristics of austempered ductile iron
Author(s) Polishetty, AshwinORCID iD for Polishetty, Ashwin
Littlefair, Guy
Journal name Advanced materials research
Volume number 97-101
Start page 2036
End page 2039
Total pages 4
Publisher Trans Tech Publications
Place of publication Stafa-Zurich, Switzerland
Publication date 2010
ISSN 1022-6680
Keyword(s) austempered ductile iron
surface texture analysis
microhardness analysis
Summary Austempered Ductile Iron (ADI) is a modified Spheroidal Graphite Iron (SGI) produced by applying a two-stage heat treatment cycle of austenitising and austempering. The microstructure of ADI also known as "ausferrite" consists of ferrite, austenite and graphite nodules. Machining ADI using conventional techniques is often problematic due to the microstructural phase transformation from austenite to martensite. Machining trials consisted of drilling ADI-Grades900, 1050, 1200 and 1400 using inserted (TiAlN PVD coated) type drills. The cutting parameters selected were; cutting speeds [m/min] of 30 and 40; penetration rates [mm/rev] of 0.1 and 0.2; to a constant depth of 20mm. The machining characteristics of ADI are evaluated through surface texture analysis and microhardness analysis. These results indicate that microhardness is modified during machining and surface texture is improved using a cutting fluid.
Language eng
Field of Research 091004 Machining
Socio Economic Objective 861202 Machined Metal Products
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Trans Tech Publications
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