Effects of electropulsing on the machinability and microstructure of GH4169 superalloy during turning process

Effects of electropulsing on the machinability and microstructure of GH4169 superalloy during... The effects of electropulsing on the machinability and microstructure of the machined surface of GH4169 superalloy are investigated in the present work. The results indicate that the machinability and the surface quality of GH4169 superalloy achieve evident improvements during the electropulsing-assisted turning process (EP-TP) at appropriate electropulsing parameters compared with the traditional dry turning process (TD-TP). In EP-TP at the frequency of 400 Hz and the root-mean-square (RMS) current density of 0.64 A mm−2, the main cutting force, the axial surface roughness, and the surface microhardness are reduced dramatically. In addition, the quality of machined surface and the ability of plastic deformation are also facilitated significantly under the effects of electropulsing. For GH4169 superalloy, the enhanced ability of the plastic deformation and the promoted mobility of dislocations in the cutting layer under the influence of the coupling of thermal and athermal effects of the exerted electropulsing are likely the primary reasons for the observed phenomena. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

Effects of electropulsing on the machinability and microstructure of GH4169 superalloy during turning process

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Publisher
Springer London
Copyright
Copyright © 2017 by Springer-Verlag London Ltd., part of Springer Nature
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-1407-6
Publisher site
See Article on Publisher Site

Abstract

The effects of electropulsing on the machinability and microstructure of the machined surface of GH4169 superalloy are investigated in the present work. The results indicate that the machinability and the surface quality of GH4169 superalloy achieve evident improvements during the electropulsing-assisted turning process (EP-TP) at appropriate electropulsing parameters compared with the traditional dry turning process (TD-TP). In EP-TP at the frequency of 400 Hz and the root-mean-square (RMS) current density of 0.64 A mm−2, the main cutting force, the axial surface roughness, and the surface microhardness are reduced dramatically. In addition, the quality of machined surface and the ability of plastic deformation are also facilitated significantly under the effects of electropulsing. For GH4169 superalloy, the enhanced ability of the plastic deformation and the promoted mobility of dislocations in the cutting layer under the influence of the coupling of thermal and athermal effects of the exerted electropulsing are likely the primary reasons for the observed phenomena.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Nov 30, 2017

References

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