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On Improving the Quality of Gas Tungsten Arc Welded 18Ni 250 Maraging Steel Rocket Motor Casings

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Abstract

In view of their excellent combination of strength and toughness, maraging steels (18Ni 250 grade) are widely used for the fabrication of large sized solid rocket motor casings. Gas tungsten arc welding is commonly employed to fabricate these thin walled metallic casings, as the technique is not only simple but also provides the desired mechanical properties. However, sometimes, radiographic examination of welds reveals typical unacceptable indications requiring weld repair. As a consequence, there is a significant drop in weld efficiency and productivity. In this work, the nature and the cause of the occurrence of these defects have been investigated and an attempt is made to overcome the problem. It has been found that weld has a tendency to form typical Ca and Al oxide inclusions leading to the observed defects. The use of calcium fluoride flux has been found to produce a defect free weld with visible effect on weld bead finish. The flux promotes the separation of inclusions, refines the grain size and leads to significant improvement in mechanical properties of the weldment.

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References

  1. Kenyon N (1968) Weld J 47:193–198

    Google Scholar 

  2. Online document: Maoyan Lin, Osaka University Knowledge Archive (Issue date 1988-05). http://ir.library.osaka-u-ac.jp/dspace.

  3. M. C. Coleman and M. F. Jordan: Metals Technology, 1974, vol. 1(1), pp. 24-30.

    Article  Google Scholar 

  4. M. C. Mittal and B. R. Ghose: Weld J., 1989, vol. 77(11), pp. 457-61-s.

  5. C. R. Shamantha, R. Narayanan, K. J. L. Iyer, V. M. Radhakrishnan, S. K. Seshadri, S. Sundararajan and S. Sundaresan: Sci. Technol. Weld. Joining, 2000, vol. 5(5), pp. 329-337.

    Article  Google Scholar 

  6. K. Sreekumar, A. Natarajan, P. P. Sinha, and K. V. Nagarajan: J. of Materials Science, 1992, vol. 27, pp. 3817-3820.

    Article  Google Scholar 

  7. P. P. Sinha, S. Arumugham and K. V. Nagarajan: Weld J., 1993, vol. 72, pp. 391-396.

    Google Scholar 

  8. B. Ahmad, F. Tariq, N. Naz and R. A. Baloch: Weld J., 2012, vol. 91(10), pp. 38-47.

    Google Scholar 

  9. F. H. Lang and N. Kanyon: Weld. Res. Counc. Bull, 1971, 159, pp. 1–41

    Google Scholar 

  10. F. D. Duffey and W. Sutar: Weld J., 1965, vol. 44(6), pp. 224-236.

    Google Scholar 

  11. C. Roberts: British Welding Journal, 1968, vol. 15(3), pp. 243-249.

    Google Scholar 

  12. V. V. Rao, G. M. Reddy and A. K. Singh: International Welding Symposium, Mumbai, India, February 2010.

    Google Scholar 

  13. L. Subashini, P. Prabhakar, and G. Padmanabham: Conference of Metallurgist Proceedings, Pune, India, 2014.

  14. Publication no. 4419, Nickel Development Institute, Inco Limited, 1976. ISBN: 978-1-926872-24-7

  15. Z. Dongwei, L. Haibo, B. Chunlin and Y. Jian: ISIJ Int., 2015, vol. 55 (10), pp. 2115-2124.

    Article  Google Scholar 

  16. K. Taguchi, H. Uno-nakazato, T. Usui and K. Marukawa: ISIJ Int., 2005, vol. 45 (11), pp. 1572-1576.

    Article  Google Scholar 

  17. O. Grong, T. A. Siewert, G. P. Martins and D. L. Olson: Metall. Trans. A, 1986, vol. 17A, pp. 1797-1807.

    Article  Google Scholar 

  18. A.O. Kluken and Ø. Grong: Metall. Mater. Trans. A, 1989, vol. 20A, pp. 1335-49.

  19. S. Kou: Welding Metallurgy, 2nd ed., Wiley, New Jersey, 2003, pp. 103–105, 164-66.

  20. H.E. Romine: Technical Report No. 2033, U.S. Naval Weapons Laboratory, Dahlgren, VA, 1966.

  21. S. Leconte, P. Paillard, P. Chapelle, G. Henrion G and J. Saindrenan: Sci. Technol. Weld. Joining, 2007, vol. 12(2), pp. 120-126.

    Article  Google Scholar 

  22. J. Niagaj: Arch. Metall. Mater., 2012, vol. 57(1), pp. 39-41

    Article  Google Scholar 

  23. J. Shen, L. Wang, and D. Peng: Metall. Meter. Trans. A, 2012, vol. 43(11), pp. 4397-4405.

    Article  Google Scholar 

  24. J. Park and H. Todoroki: ISIJ Int., 2010, vol. 50(10), pp. 1333-1346.

    Article  Google Scholar 

  25. E. Baune, C. Bonnet, and S. Liu: Weld J, 2000, vol. 79(3), pp. 57-65-s.

  26. S. S. Tuliani, T. Boiszewski and N. F. Eaton: Weld. Met. Fabr., 1969, vol. 8, pp. 327–339.

    Google Scholar 

  27. J. Du Plessis, M. Du Toit and P. C. Pistorius: Weld. J., 2007, vol. 86, pp. 273–280.

    Google Scholar 

  28. K. Mills: Short course presented as part of Southern African Pyrometallurgy 2011, Imperial College, London, UK, March 2011.

    Google Scholar 

  29. A. K. Chatterjee and G. L. Zhmoidin: Journal of Materials Science, 1972, vol. 7, pp. 93-97.

    Article  Google Scholar 

  30. Y. Wang, M. Valdez and R. Sridhar: Metall. Meter. Trans. B, 2002, vol. 33B, pp. 625-632.

    Article  Google Scholar 

  31. D. A. Jerebtsov and G.G. Mikhailov: Ceramics International, 2001, vol. 27, pp. 25-28.

    Article  Google Scholar 

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Authors and Affiliations

  1. Larsen & Toubro Limited, Heavy Engineering IC, Powai Campus, Mumbai, 400 072, India

    Renu N. Gupta & M. K. Mukherjee

  2. Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Mumbai, 400 072, India

    V. S. Raja

  3. Materials and Metallurgy Group, Vikram Sarabhai Space Center, Trivandrum, 695 022, India

    S. V. S. Narayana Murty

Authors
  1. Renu N. Gupta
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  2. V. S. Raja
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  3. M. K. Mukherjee
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  4. S. V. S. Narayana Murty
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Correspondence to V. S. Raja.

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Manuscript submitted March 8, 2017.

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Gupta, R.N., Raja, V.S., Mukherjee, M.K. et al. On Improving the Quality of Gas Tungsten Arc Welded 18Ni 250 Maraging Steel Rocket Motor Casings. Metall Mater Trans A 48, 4655–4666 (2017). https://doi.org/10.1007/s11661-017-4279-3

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  • DOI: https://doi.org/10.1007/s11661-017-4279-3

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