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Laser Gas Nitriding of Ti-6Al-4V Part 2: Characteristics of Nitrided Layers

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Advanced Performance Materials

Abstract

The characteristics of laser nitrided layers formed on Ti-6Al-4V are presented in this investigation. It has been determined that titanium nitride (TiN) is formed, which significantly increases the hardness of the nitrided surfaces. The amount of titanium nitride produced depends on the processing parameters such as laser pulse energy and nitrogen concentration. Nitrided layers are much smoother along the laser pass direction than perpendicular to this direction. The shrinkage effect in the laser melt zone produces surface residual tensile stresses in Ti-6Al-4V samples regardless of whether the processing environment is Ar, N2, or a mixture of these gases. Pre-heating or stress relieving after laser nitriding significantly reduces the residual tensile stress level.

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References

  1. S. Katayama, A. Matsunawa, A. Morimoto, S. Ishimoto, and Y. Arata, Surface hardening of titanium by laser nitriding, in Laser Processing of Materials, edited by K. Mukherjee and J. Mazumder (ICALEO'83 Conference Proceedings, Los Angles, 1983), pp. 127-134.

  2. P.A. Molian, Principles and applications of laser for wear-resistant coatings, in Surface Modification Technologies, edited by T.S. Sudarshan and D.G. Bhat (1988), pp. 237-265.

  3. P.H. Morton, T. Bell, A. Weisheit, J. Kroll, B.L. Mordike, and K. Sagoo, Laser gas nitriding of titanium and titanium alloys, in Surface Modification Technologies V, edited by T.S. Sudarshan and J.F. Braza (1992), pp. 593-609.

  4. M. Collin and G. Coquerelle, Laser nitriding and carburizing of Ti-6Al-4V titanium alloy, The Laser vs. the Electron Beam in Welding, Cutting and Surface Treatment: State of the Art (1985), vol. 1, pp. 215-230.

    Google Scholar 

  5. J. Folkes, D.R.F. West, and W.M. Steen, Laser surface melting and alloying of titanium, Laser Surface Treatment of Metals (1986), pp. 451-459.

  6. A. Walker, J. Folkes, W.M. Steen, and D.R.F. West, Laser surface alloying of titanium substrates with carbon and nitrogen, Surface Engineering 1, 23-29 (1985).

    Google Scholar 

  7. H.W. Bieler, M. Schwarz, and E.W. Kreutz, Laser gas alloying of Ti-6Al-4V with high-power CO2 laser radiation, Proceedings of ICALEO'87 (1987), pp. 195-200.

  8. S. Yerramareddy and S. Bahadur, The effect of laser surface treatments on the tribological behaviour of Ti-6Al-4V, Wear 157, 245-262 (1992).

    Google Scholar 

  9. A.B. Kloosterman and J.Th.M. De Hosson, Surface modification of titanium by laser nitriding, in Computer Methods and Experimental Measurements for Surface Treatment Effects II, edited by M.H. Aliabadi and A. Terranova (1995), pp. 247-254.

  10. L. Xue, M. Islam, A.K. Koul, M. Bibby, and W. Wallace, Laser gas nitriding of Ti-6Al-4V, Part 1: Optimization of the process, Advanced Performance Materials Journal 9 (1996), pp. 25-47.

    Google Scholar 

  11. B.D. Cullity, Elements of X-Ray Diffraction (1956), pp. 431-453.

  12. S. Lampman, Wrought titanium and titanium alloys, ASM Handbook (1990), vol. 2, pp. 592-633.

    Google Scholar 

  13. H.A. Wriedt and J.L. Murray, The N-Ti (Nitrogen-Titanium) system, in Phase Diagrams of Binary Titanium Alloys, edited by J.L. Murray (ASM International, 1987), pp. 176-186.

  14. The Joint Committee on Powder Diffraction Standards (JCPD), The Powder Diffraction File No. 38-1420: TiN.

  15. The Joint Committee on Powder Diffraction Standards (JCPD), The Powder Diffraction File No. 31-1403: TiN0.9.

  16. L.E. Davis, N.C. McDonald, P.W. Palmberg, G.E. Riach, and R.E. Weber, Handbook of Auger Electron Spectroscopy (1976).

  17. H. Bande, G. L'Espérance, M.U. Islam, and A.K. Koul, Laser surface hardening of AISI 01 tool steel and its microstructure, Materials Science and Technology 7 (1991), pp. 452-457.

    Google Scholar 

  18. F.R. Brotzen, Mechanical testing of thin films, International Materials Reviews 39 (1994), pp. 24-45.

    Google Scholar 

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Authors and Affiliations

  1. Structures, Materials and Propulsion Laboratory, Institute for Aerospace Research, National Research Council, Ottawa, Canada, K1A 0R6

    L. Xue, Ashok K. Koul & William Wallace

  2. Integrated Manufacturing Technologies Institute, National Research Council, Ottawa, Canada, K1A 0R6

    M. Islam

  3. Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Canada, K1S 5B6

    M. Bibby

Authors
  1. L. Xue
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  2. M. Islam
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  3. Ashok K. Koul
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  4. M. Bibby
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  5. William Wallace
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Xue, L., Islam, M., Koul, A.K. et al. Laser Gas Nitriding of Ti-6Al-4V Part 2: Characteristics of Nitrided Layers. Advanced Performance Materials 4, 389–408 (1997). https://doi.org/10.1023/A:1008696511669

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  • DOI: https://doi.org/10.1023/A:1008696511669

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