Skip to main content
SpringerLink
Log in

Solidification During Selective Laser Melting of Co-29Cr-6Mo Alloy

  • Technological Innovations in Metals Engineering
  • Published:
JOM Aims and scope Submit manuscript

Abstract

Solidification during selective laser melting (SLM) needs to be better understood. In this work, track formation and how it affects grain growth during SLM of Co-29Cr-6Mo alloy over the laser power range of 180–360 W with other parameters kept constant have been studied. The track shape observed has suggested a conduction mode during SLM consistent with the calculated normalized enthalpy that indicates no significant vaporisation to form keyholes. Increasing the laser power led to increases in the track size with track boundaries remained largely circular arc-shaped. Grain growth direction and size are shown to be affected by track size. Measured values of track size have enabled the estimation of growth rate and, coupled with the measurement of cell size, the thermal gradient has been calculated. These data will be discussed in relation to modes of solidification.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

  1. T. DebRoy, H.L. Wei, J.S. Zuback, T. Mukherjee, J.W. Elmer, J.O. Milewski, A.M. Beese, A. Wilson-Heid, A. De, and W. Zhang, Prog. Mater Sci. 92, 112 (2018).

    Article  Google Scholar 

  2. S.S. Babu, Scr. Mater. 135, 97 (2017).

    Article  Google Scholar 

  3. Y. Kok, X.P. Tan, P. Wang, M.L.S. Nai, N.H. Loh, E. Liu, and S.B. Tor, Mater. Des. 139, 565 (2018).

    Article  Google Scholar 

  4. D. Zhang, S. Sun, D. Qiu, M.A. Gibson, M.S. Dargusch, M. Brandt, M. Qian, and M. Easton, Adv. Eng. Mater. 20, 1700952 (2018).

    Article  Google Scholar 

  5. Z.W. Chen, M.A.L. Phan, and K. Darvish, J. Mater. Sci. 52, 7415 (2017).

    Article  Google Scholar 

  6. K. Darvish, Z.W. Chen, M.A.L. Phan, and T. Pasang, Mater. Charact. 135, 183 (2018).

    Article  Google Scholar 

  7. K. Darvish, Z.W. Chen, and T. Pasang, Mater. Design 112, 357 (2016).

    Article  Google Scholar 

  8. A. Kaplan, The Theory of Laser Materials Processing, ed. J. Dowden (Dordrecht: Springer, 2009), p. 71.

    Chapter  Google Scholar 

  9. D.B. Hann, J. Iammi, and J. Folkes, J. Phys. D 44, 445401 (2011).

    Article  Google Scholar 

  10. W.E. King, H.D. Barth, V.M. Castillo, G.F. Gallegos, J.W. Gibbs, D.E. Hahn, G. Kamath, and A.M. Rubenchik, J. Mater. Process. Technol. 214, 2915 (2014).

    Article  Google Scholar 

  11. W. Kurz and D.J. Fisher, Fundamentals of Solidification, 4th ed. (Stafa: Trans Tech Publications Ltd, 1998).

    Google Scholar 

  12. K. Harris and S. Sikkenga, In: Proceedings of the 24th BICTA Investment Casting Conference: New Horizons and Process Capabilities, British Investment Casting Trade Association, 1999, p. 8.

  13. M.J. Bermingham, S.D. McDonald, D.H. StJohn, and M.S. Dargusch, J. Mater. Res. 26, 951 (2011).

    Article  Google Scholar 

  14. R.R. Dehoff, M.M. Kirka, W.J. Sames, H. Bilheux, A.S. Tremsin, L.E. Lowe, and S.S. Babu, Mater. Sci. Technol. 31, 931 (2015).

    Article  Google Scholar 

  15. P.A. Kobryn and S.L. Semiatin, J. Mater. Process. Technol. 135, 330 (2003).

    Article  Google Scholar 

Download references

Acknowledgements

Teresa Guraya wishes to thank Erasmus Mundus Partnerships “PANTHER” Programme for financially supporting her to conduct additive manufacturing research at Auckland University of Technology.

Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Auckland University of Technology, Auckland, New Zealand

    Z. W. Chen, K. Darvish, M. A. L. Phan & T. Pasang

  2. Department of Mining and Metallurgical Engineering and Materials Science, University of the Basque Country UPV/EHU, Bilbao, Spain

    T. Guraya

Authors
  1. Z. W. Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. T. Guraya
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. K. Darvish
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. M. A. L. Phan
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. T. Pasang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Z. W. Chen.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Chen, Z.W., Guraya, T., Darvish, K. et al. Solidification During Selective Laser Melting of Co-29Cr-6Mo Alloy. JOM 71, 691–696 (2019). https://doi.org/10.1007/s11837-018-3264-7

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11837-018-3264-7

Search

Navigation