Manufacturing Technology 2016, 16(3):627-633 | DOI: 10.21062/ujep/x.2016/a/1213-2489/MT/16/3/627

The Mechanics of Machining Ultrafine-Grained Grade 2 Ti Processed Severe Plastic Deformation

Anastasiya Symonova1, Francois Ducobu2, Viktorie Weiss3
1 Department of Mechanical Engineering, Kremenchuk Mykhailo Ostrohradskyi National University. Pershotravheva 20, 39600 Kremenchuk. Ukraine
2 Department of Machine Design and Production Engineering, University of Mons. Place du Parc 20, B-7000 Mons. Belgium
3 Department of Mechanical Engineering, The Institute of Technology and Business in Ceske Budejovice. Okruzni 10, 370 01 Ceske Budejovice. Czech Republic

Machining of titanium is quite difficult and expensive. Heat generated during the process of cutting does not dissipate quickly, which affects tool life. In the last decade ultrafine-grained (UFG) titanium has emerged as an option for substitution for more expensive titanium alloys. Extreme grain refinement can be readily performed by severe plastic deformation techniques. Grain refinement of a material achieved in this way was shown to change its mechanical and physical properties. In the present study, the microstructure evolution and the shear band formation in chips of coarse grained and UFG titanium machined to different cutting speeds and feeding rates was investigated. It was demonstrated that an improvement in the machinability can be expected for UFG titanium.

Keywords: Ultrafine-grained, Titanium, Machinability, Severe plastic deformtion

Published: June 1, 2016  Show citation

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Symonova A, Ducobu F, Weiss V. The Mechanics of Machining Ultrafine-Grained Grade 2 Ti Processed Severe Plastic Deformation. Manufacturing Technology. 2016;16(3):627-633. doi: 10.21062/ujep/x.2016/a/1213-2489/MT/16/3/627.
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References

  1. ZHU, Y.T., LOWE, T.C., VALIEV, R.Z., STOLYAROV, V.V., LATYSH, V.V., RAAB, G.I. (2002). Ultrafine-grained titanium for medical implants. US Patent, 6,399,215.
  2. STOLYAROV, V.V., ZHU, Y.T., ALEXANDROV, I.V. et al. (2001). Influence of ECAP routes on the microstructure and properties of pure Ti. In: Materials Science and Engineering, Vol. A299 (1 - 2), pp. 59 - 67. Elsevier. USA. Go to original source...
  3. INYOUNG, K., WON-SIK, J., JONGYOUL, K., KYUNG-TAE, P., DONG, H.S. (2001). Deformation structures of pure Ti produced by equal channel angular pressing. In: Scripta Materialia, Vol. 45, pp. 575 - 581. Elsevier. USA. Go to original source...
  4. MAREK, I., VOJTĚCH, D., MICHALCOVÁ, A., KUBATÍK, T.F. (2015). Preparation and Mechanical Properties of Ultra-High-Strength Nanocrystalline Metals. Manufacturing Technology, Vol. 15, No. 4, pp. 596-600. ISSN 1213-2489. Go to original source...
  5. GERTSMAN, V.Y., BIRRINGER, R., VALIEV, R.Z., GLEITER, H. (1994). On the structure and strength of ultra-fine grained copper produced by several plastic deformation. In: Scripta Metallurgica et Materialia, Vol. 30, pp. 229 - 234. Elsevier. USA. Go to original source...
  6. MOREHEADA, M., HUANGA, Y., HARTWIGB, K.T. (2007). Machinability of ultrafine-grained copper using tungsten carbide and polycrystalline diamond tools. In: International Journal of Machine Tools and Manufacture, Vol. 47, pp. 286 - 293. Elsevier. USA. Go to original source...
  7. LAPOVOK, R., MOLOTNIKOV, A., LEVIN, Y., BANDARANAYAKE, A., ESTRIN, Y. (2012). Machining of coarse grained and ultra fine grained titanium. In: Journal of Materials Science, Vol. 47, pp. 4589 - 4594. Springer. Germany. Go to original source...
  8. SALISHCHEV, G.A., VALIAKHMETOV, R.O., GALEEV, R.M. (1993). Formation of submicrocrystalline structure in the titanium alloys BT8 and influence on mechanical properties. In: Journal of Materials Science, Vol. 28, pp. 2898 - 2902. Springer. Germany. Go to original source...
  9. ISO3685-1977(E). Tool-life testing with single-point turning tools. This standard has been revised by: ISO 3685:1993.9
  10. HORVATH, R., MATYASI, G., DREGELYI-KISS, A. (2015). Examination of the Machinability of Eutectic Aluminium Alloys. Manufacturing Technology, Vol. 15, No. 5, pp. 830-836. ISSN 1213-2489. Go to original source...
  11. KOMANDURI, R. (1982). Some clarifications on the mechanics of chip formation when machining titanium alloys. In: Wear, Vol. 76, pp. 15 - 34. Elsevier. USA. Go to original source...
  12. BACH, P., POLÁČEK, M., CHVOJKA, P., DROBÍLEK, J. (2014). Dynamic Forces in Unstable Cutting during Turning Operation. Manufacturing Technology, Vol. 14, No. 1, pp. 3-8. ISSN 1213-2489. Go to original source...
  13. CEPOVA, L., SOKOVA, D., MALOTOVA, S., GAPINSKI, B., CEP, R. (2016). Evaluation of Cutting Forces and Surface Roughness after Machining of Selected Materials. Manufacturing Technology, Vol. 16, No. 1, pp. 45-48. ISSN 1213-2489. Go to original source...
  14. HRICOVÁ, J. (2013). Influence of Cutting Tool Material on the Surface Roughness of AlMgSi Aluminium Alloy. Manufacturing Technology, Vol. 13, No. 3, pp. 324-328. ISSN 1213-2489. Go to original source...
  15. EZUGWU, E.O., WANG, Z.M. (1997). Titanium alloys and their machinability a review. In: Journal of Materials Processing Technology, Vol. 68, pp. 262 - 274. Elsevier. USA. Go to original source...
  16. SYMONOVA, A.A., VEREZUB, O.N., SYCHEVA, A.A., VEREZUB, N.V., HAVIN, V.L., KAPTAY, G. (2012). Surface grain coarsening and surface during machining of ultra-grained titanium. In: Journal of Mining and Metallurgy. Sec. B, Vol. 48, pp. 378 - 389. University of Belgrade. Serbia. Go to original source...
  17. SUTTER, G., LIST, G. (2013). Very high speed cutting of Ti-6Al-4V titanium alloy-change in morphology and mechanism of chip formation. In: International Journal of Machine Tools and Manufacture, Vol. 66, pp. 37 - 43. Elsevier. USA. Go to original source...
  18. ZWICKER, U. (1974). Titan und Titanlegierungen, pp. 26 - 63. Berlin: Springer Verlag. H.N.I. Go to original source...
  19. VALIEV, R.Z. (2004). Nanostructuring of Metals by Several Plastic Deformation for Advanced Properties. In: Nature Materials,Vol. 3, pp. 511 - 516. Nature Publishing Group. Great Britain. Go to original source...