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Evaluating the Machinability of Inconel 718 Using Polar Diagrams

[+] Author Affiliations
Pajazit Avdovic

Siemens Industrial Turbomachinery AB, Finspong; Chalmers University of Technology, Göteborg, Sweden

Linhong Xu

Lund University, Lund, Sweden; China University of Geosciences, Wuhan, China

Mats Andersson, Jan-Eric Ståhl

Lund University, Lund, Sweden

Paper No. GT2010-22695, pp. 987-996; 10 pages
doi:10.1115/GT2010-22695
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Education; Electric Power; Manufacturing Materials and Metallurgy
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4396-3 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

The use of a polar diagram method for describing and evaluating the machinability of Inconel 718 was explored. Five key parameters of the work material, representing the mechanical and physical properties which have strongest influence on its machinability, were employed in the diagrams. These five parameters were integrated into a single polar diagram, used to describe the machinability of Inconel 718. Variations in the machinability of Inconel 718 products or components of a given type produced in different batches were analyzed. Industrial experiments were conducted to test the relationship between the polar diagram of the work material, its carbon content, and tool wear of the ceramic cutting tools used in machining it. Work materials of Inconel 718 in which the polar diagrams of machinability were similar in size and shape exhibited very similar behavior during the cutting process. The polar diagram method employed appeared to be useful for selecting suitable cutting data for the machining of new materials.

Copyright © 2010 by ASME
Topics: Machinability

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