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How Suspended Particles Affect Surface Morphology in Powder Mixed Electrical Discharge Machining (PMEDM)


The effect of SiC powder mixing into the dielectric liquid on surface topology and structure of interstitial free (IF) steel has been studied. Four process parameters, namely pulse duration, pulse current, concentration of powder, and type of dielectric liquid material, have been selected as varying parameters. Surface modifications due to suspended SiC particles were identified by using optical, scanning electron microscopy, and X-ray diffraction analysis. It was observed that suspended particles around discharge column accelerated and gained sufficient velocity to penetrate to the molten pool before solidification by means of electrophoresis and negative pressure induced after cessation of a discharge, which leads a surface embedded with added fine particles under that prevent formation of penetrating cracks during machining. However, surface cracks that formed due to high transformational stresses developed during solidification were found to be unaffected by means of mechanical action of the particles.

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  1. A. Erden and S. Bilgin: Proc. 21st International Machine Tool Design and Research Conference, Macmillan, London, U.K., 1980, pp. 345–50.

  2. M.L. Jeswani: Wear, 1981, vol. 70, pp. 133–39.

    Article  CAS  Google Scholar 

  3. N. Mohri, N. Saito, and M.A. Higashi: CIRP Annals—Manufacturing Technology, 1991, vol. 40, pp. 207–10.

  4. H. Narumiya, N. Mohri, N. Saito, H. Otake, Y. Tsnekawa, T. Takawashi, and K. Kobayashi: Proc. 9th International Symposium for Electromachining, Nagoya, Japan, 1989, pp. 5–8.

  5. B.M. Schumacher: CIRP Annals-Manufacturing Technology, 1990, vol. 39, pp. 197–99.

    Article  Google Scholar 

  6. K. Kobayashi, T. Magara, Y. Ozaki, and T. Yatomi: Proc. Second International Conference on Die and Mould Technology, Singapore, 1992, pp. 35–47.

  7. B.H. Yan and S.L. Chen: J. Jpn. Inst. Metal., 1994, vol. 58, pp. 1067–72.

    CAS  Google Scholar 

  8. B.H. Yan and S.L. Chen: J. Jpn. Inst. Light Met., 1994, vol. 44, pp. 281–85.

    Article  CAS  Google Scholar 

  9. Q.Y. Ming and L.Y. He: J. Mater. Process. Tech., 1995, vol. 52, pp. 44–54.

    Article  Google Scholar 

  10. Y. Uno and A. Okada: Int. J. Electrical Mach., 1997, vol. 2, pp. 13–18.

    Google Scholar 

  11. Y.S. Wong, L.C. Lim, I. Rahuman, and W.M. Tee: J. Mater. Process. Tech., 1998, vol. 79, pp. 30–40.

    Article  Google Scholar 

  12. H.M. Chow, B.H. Yan, F.Y. Huang, and J.C. Hung: J. Mater. Process. Tech., 2000, vol. 101, pp. 95–103.

    Article  Google Scholar 

  13. Y.F. Tzeng and C.Y. Lee: Int. J. Adv. Manufact. Tech., 2001, vol. 17, pp. 586–92.

    Article  Google Scholar 

  14. W.S. Zhao, Q.G. Meng, and Z.L. Wang: J. Mater. Process. Tech., 2002, vol. 129, pp. 30–33.

    Article  Google Scholar 

  15. P. Pecas and E.A. Henriques: Int. J. Mach. Tools Manufact., 2003, vol. 43, pp. 1465–71.

    Article  Google Scholar 

  16. J. Simao, H.G. Lee, D.K. Aspinwall, R.C. Dewes, and E.M. Aspinwall: Int. J. Mach. Tools Manufact., 2003, vol. 43, pp. 121–28.

    Article  Google Scholar 

  17. Y.F. Tzeng and F. Chen: Int. J. Mach. Tools Manufact., 2003, vol. 43, pp. 217–27.

    Article  Google Scholar 

  18. E.D. Cabanillas, J. Desimoni, G. Punte, and R.C. Mercader: Mater. Sci. Eng., 2000, vol. A276, pp. 133–40.

    CAS  Google Scholar 

  19. P.H. Thomson: Mater. Sci. Technol., 1989, vol. 5, pp. 1153–57.

    Article  CAS  Google Scholar 

  20. L. Massarelli and M. Marchionni: Mater. Tech., 1977, vol. 4, no. 2, pp. 100–05.

    CAS  Google Scholar 

  21. B. Ekmekci: Appl. Surf. Sci., 2007, vol. 253, no. 23, pp. 9234–40.

    Article  CAS  Google Scholar 

  22. Y.F. Luo: J. Mater. Process. Tech., 1997, vol. 68, pp. 121–31.

    Article  Google Scholar 

  23. M. Kunieda and K. Yanatori: Int. J. Electrical Mach., 1997, vol. 2, pp. 43–49.

    Google Scholar 

  24. B. Ekmekci, O. Elkoca, and A. Erden: Metall. Mater. Trans. B, 2005, vol. 36B, pp. 117–24.

    Article  CAS  Google Scholar 

  25. B. Ekmekci: Metall. Mater. Trans. B, 2009, vol. 40B, pp. 70–81.

    Article  CAS  Google Scholar 

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This work is supported by Bülent Ecevit University Research Fund Grant No. 2007.

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Correspondence to Bülent Ekmekci.

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Manuscript submitted March 6, 2012.

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Ekmekci, B., Ersöz, Y. How Suspended Particles Affect Surface Morphology in Powder Mixed Electrical Discharge Machining (PMEDM). Metall Mater Trans B 43, 1138–1148 (2012).

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  • Material Removal Rate
  • Electric Discharge Machine
  • Molten Pool
  • White Layer
  • Electric Discharge Machine Process