Advertisement

Journal of Materials Science

, Volume 29, Issue 16, pp 4216–4224 | Cite as

Surface laser treatment of ductile irons

  • V. Lopez
  • J. M. Bello
  • J. Ruiz
  • B. J. Fernandez
Papers

Abstract

The effect of the laser surface treatment of three types of ductile iron (Grades 60-40-18, 80-55-06 and 100-70-03) was studied. Using a continuous CO2 laser with a square 10 mm × 10 mm beam and uniform power density, the effect of beam scan rate at 2.5 and 5 kW power output was investigated. At each power rate, a range of scan rates was used to produce treatments with and without surface melting. The microstructure and hardness of the different zones of the treated material were analysed. It was found that layers of white iron of the same depth were produced in the three test irons when the operating conditions melted the surface material. Surface porosity can be eliminated by melting, although transverse cracks appeared on the surface with this treatment. Surface martensitic hardening produced a layer of uniform hardness only in the case of the grade 100-70-03 ductile iron with a perlitic matrix.

Keywords

Power Output Power Density Surface Treatment Surface Material Laser Treatment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    W. M. Steen, Zhen Da Chen and D. R. F. West, in “Industrial Laser Annual Handbook” (Penn Well, Tulsa, OK, 1988) p. 80.Google Scholar
  2. 2.
    H. W. Bergman, Surf. Eng. 1 (1985) 137.CrossRefGoogle Scholar
  3. 3.
    C. H. Chen, C. P. Lu and J. M. Rigsbee, Mater. Sci. Technol. 4 (1988) 161.CrossRefGoogle Scholar
  4. 4.
    A. Gasser, G. Herziger, E. W. Kreutz and K. Wissenbarch, in “Proceedings of LAMP' 87”, Osaka, May, edited by Y. Arata (High Temperature Society of Japan, Osaka, Japan, 1987) p. 451.Google Scholar
  5. 5.
    B. L. Mordike, in “Advances in Surface Treatments”, Vol. 5, edited by A. Niku-Lari (Pergamon Press, Oxford, 1987) p. 382.Google Scholar
  6. 6.
    K. Mathur and P. A. Mohan, J. Eng. Mater. Technol. Trans. ASME 107 (1985) 200.CrossRefGoogle Scholar
  7. 7.
    C. H. Chen, C. P. Lu and J. M. Rigsbee, Mater. Sci. Technol. 4 (1988) 172.CrossRefGoogle Scholar
  8. 8.
    P. W. Leech, Wear 113 (1986) 233.CrossRefGoogle Scholar
  9. 9.
    P. A. Molian, J. Eng. Mater. Technol. Trans. ASME 109 (1987) 179.CrossRefGoogle Scholar
  10. 10.
    J. Ruiz, B. J. Fernandez and J. M. Bello, in “Proceedings of the 2nd International Seminar on Surface Engineering with High Energy Beams”, Science and Technology, Lisbon 1989, edited by CEMUL (Center of Mechanics and Materials of the Technical University of Lisbon, Lisbon, Portugal, 1989) p. 161.Google Scholar
  11. 11.
    G. Ricciardi, F. Pasquini and S. Rudilosso, in “Proceedings of the 1st Conference on Lasers in Manufacturing (LIM1)”, Brighton, UK, November 1983, edited by M. Kimmit (IFS, Kempston, Bedford, UK, 1983) p. 87.Google Scholar
  12. 12.
    H. W. Bergman, in “Laser Surface Treatment of Metals”, edited by C. W. Draper and P. Mazzoldi (Martinus Nijhoff, Dordrecht, Netherlands, 1986) p. 351.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • V. Lopez
    • 1
  • J. M. Bello
    • 1
  • J. Ruiz
    • 1
  • B. J. Fernandez
    • 1
  1. 1.CENIM (CSIC)MadridSpain

Personalised recommendations