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Microstructural evolution of 6063 aluminum during friction-stir welding

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Abstract

The microstructural distribution associated with a hardness profile in a friction-stir-welded, age-hardenable 6063 aluminum alloy has been characterized by transmission electron microscopy (TEM) and orientation imaging microscopy (OIM). The friction-stir process produces a softened region in the 6063 Al weld. Frictional heating and plastic flow during friction-stir welding create fine recrystallized grains in the weld zone and recovered grains in the thermomechanically affected zone. The hardness profile depends greatly on the precipitate distribution and only slightly on the grain size. The softened region is characterized by dissolution and growth of the precipitates during the welding. Simulated weld thermal cycles with different peak temperatures have shown that the precipitates are dissolved at temperatures higher than 675 K and that the density of the strengthening precipitate was reduced by thermal cycles lower than 675 K. A comparison between the thermal cycles and isothermal aging has suggested precipitation sequences in the softened region during friction-stir welding.

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References

  1. C.J. Dawes: Weld. Met. Fabrication, 1995, vol. 63, pp. 13–16.

    CAS  Google Scholar 

  2. C.J. Dawes and W.M. Thomas: Weld. J., 1996, vol. 75, pp. 41–45.

    Google Scholar 

  3. C.J. Dawes: Proc. 6th Int. Symp. of JWS, JWS, Nagoya, Japan, 1996, pp. 711–18.

    Google Scholar 

  4. S. Kallee, D. Richardson, and I. Henderson: Schweissen Schneiden (Welding Cutting), 1997, vol. 49, pp. 904–909 (E178–180).

    Google Scholar 

  5. K.-E. Knipstrom and B. Pekkari: Weld. J., 1997, vol. 76, pp. 55–57.

    CAS  Google Scholar 

  6. J. Hagstrom and R. Sandstrom: Sci. Technol. Welding Joining, 1997, vol. 2, pp. 199–208.

    CAS  Google Scholar 

  7. M. Enomoto: J. Light Met. Welding Construction, 1998, vol. 36, pp. 25–29.

    Google Scholar 

  8. W.M. Thomas and E.D. Nicholas: Mater. Des., 1997, vol. 18 (4–6), pp. 269–73.

    CAS  Google Scholar 

  9. M.B. Ellis and M. Strangwood: Mater. Sci. Technol., 1996, vol. 12, pp. 970–77.

    CAS  Google Scholar 

  10. C.G. Rhodes, M.W. Mahoney, W.H. Bingel, R.A. Spurling, and C.C. Bampton: Scripta Mater., 1997, vol. 36, pp. 69–75.

    Article  CAS  Google Scholar 

  11. M.W. Mahoney, C.G. Rhodes, J.G. Flintoff, R.A. Spurling, and W.H. Bingel: Metall. Mater. Trans. A, 1998, vol. 29A, pp. 1955–64.

    Article  CAS  Google Scholar 

  12. G. Liu, L.E. Murr, C.-S. Niou, J.C. McClure, and F.R. Vega: Scripta Mater., 1997, vol. 37, pp. 355–61.

    Article  CAS  Google Scholar 

  13. L.E. Murr, G. Liu, and J.C. McClure: J. Mater. Sci., 1998, vol. 33, pp. 1243–51.

    Article  CAS  Google Scholar 

  14. L.E. Murr, G. Liu, and J.C. McClure: J. Mater. Sci. Lett., 1997, vol. 16, pp. 1801–03.

    Article  CAS  Google Scholar 

  15. O.V. Flores, C. Kennedy, L.E. Murr, D. Brown, S. Pappu, B.M. Nowak, and J. C. McClure: Scripta Mater., 1998, vol. 38, pp. 703–08.

    Article  CAS  Google Scholar 

  16. D. Marchive and R. Deschamps: Aluminium, 1979, vol. 55, p. 37.

    Google Scholar 

  17. D. L. Zhang and L. Zheng: Metall. Mater. Trans. A, 1996, vol. 27A, pp. 3983–91.

    Article  CAS  Google Scholar 

  18. T. Sheppard: Mater. Sci. Technol., 1988, vol. 4, pp. 635–43.

    CAS  Google Scholar 

  19. B.L. Adams, S.I. Wright, and K. Kunze: Metall. Trans. A, 1993, vol. 24A, pp. 819–31.

    CAS  Google Scholar 

  20. D.J. Dingley and D.P. Field: Mater. Sci. Technol., 1997, vol. 13, pp. 69–78.

    CAS  Google Scholar 

  21. Welding Handbook, 8th ed., AWS, Miami, FL, 1996, vol. 3, p. 12.

  22. M.H. Jacobs: Phil. Mag., 1972, vol. 26, pp. 1–13.

    CAS  Google Scholar 

  23. H. Westengen and N. Ryum: Z. Metallkd., 1979, vol. 70, pp. 528–35.

    CAS  Google Scholar 

  24. I. Dutta and S.M. Allen: J. Mater. Sci. Lett., 1991, vol. 10, pp. 323–26.

    Article  CAS  Google Scholar 

  25. D.H. Bratland, Ø. Grong, H. Shercliff, O.R. Myhr, and S. Tjøtta: Acta Mater., 1997, vol. 45, pp. 1–22.

    Article  CAS  Google Scholar 

  26. H.W.L. Philips: J. Inst. Met., 1946, vol. 72, p. 151.

    Google Scholar 

  27. K. Ohori: J. Jpn Inst. Light Met., 1988, vol. 38, pp. 748–63.

    CAS  Google Scholar 

  28. C.E. Cross and G.R. Edwards: in Treatise on Materials Science and Technology, vol. 31, Aluminum Alloys—Contemporary Research and Applications, A.K. Vasudevam and R.D. Doherty, eds., Academic Press, New York, NY, 1989, pp. 53–54.

    Google Scholar 

  29. N. Maruyama, R. Uemori, N. Hashimoto, M. Saga, and M. Kikuchi: Scripta Mater., 1997, vol. 36, pp. 89–93.

    Article  CAS  Google Scholar 

  30. S. Ceresara, E. Dirusso, P. Fiorini, and A. Giarda: Mater. Sci. Eng., 1969–70, vol. 5, pp. 220–27.

    Google Scholar 

  31. K. Matsuda, H. Gamada, K. Fujii, T. Yoshida, T. Sato, A. Kamio, and S. Ikeno: J. Jpn. Inst. Light Met., 1997, vol. 47, pp. 493–99.

    Article  CAS  Google Scholar 

  32. G.A. Edwards, K. Stiller, and G.L. Dunlop: Appl. Surf. Sci., 1994, vols. 76–77, pp. 219–25.

    Article  Google Scholar 

  33. K. Matsuda, S. Ikeno, and S. Tada: J. Jpn Inst. Met., 1993, vol. 57, pp. 1107–13.

    CAS  Google Scholar 

  34. K. Matsuda, S. Tada, and S. Ikeno: J. Jpn Inst. Met., 1994, vol. 58, pp. 252–59.

    CAS  Google Scholar 

  35. K. Matsuda, S. Tada, S. Ikeno, T. Sato, and A. Kamio: Scripta Metall. Mater., 1995, vol. 32, pp. 1175–80.

    Article  CAS  Google Scholar 

  36. K. Matsuda, S. Ikeno, T. Sato, and A. Kamio: Scripta Mater., 1996, vol. 34, pp. 1797–1802.

    Article  CAS  Google Scholar 

  37. K. Matsuda, H. Gamada, K. Fujii, Y. Uetani, T. Sato, A. Kamio, and S. Ikeno: Metall. Mater. Trans. A, 1998, vol. 29A, pp. 1161–67.

    Article  CAS  Google Scholar 

  38. K. Matsuda, T. Yoshida, H. Gamada, K. Fujii, Y. Uetani, T. Sato, A. Kamio, and S. Ikeno: J. Jpn Inst. Met., 1998, vol. 62, pp. 133–39.

    CAS  Google Scholar 

  39. K. Matsuda, T. Kawabata, T. Naoi, Y. Uetani, S. Rengakuji, T. Sato, A. Kamio, and S. Ikeno: J. Jpn. Inst. Met., 1998, vol. 62, pp. 827–33.

    CAS  Google Scholar 

  40. G. Thomas: J. Inst. Met., 1961–62, vol. 90, pp. 57–63.

    CAS  Google Scholar 

  41. J.P. Lynch, L.M. Brown, and M.H. Jacobs: Acta Metall., 1982, vol. 30, pp. 1389–95.

    Article  CAS  Google Scholar 

  42. D. Ludecke: Z. Metallkd., 1986, vol. 77, pp. 278–83.

    Google Scholar 

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Authors and Affiliations

  1. the Department of Materials Processing, Graduate School of Engineering, Tohoku University, 980-8579, Sendai, Japan

    Yutaka S. Sato (Research Associate) & Hiroyuki Kokawa (Professor)

  2. the SAD Project, Showa Aluminum Corporation, Oyama Works 480, Ihuzuka, 323-8678, Oyama City, Tochigi, Japan

    Masatoshi Enomoto (Leader)

  3. the R&D Department, Showa Aluminum Corporation, 6-224, Kaisan-Cho, 590-8576, Sakai City, Osaka, Japan

    Shigetoshi Jogan (Welding Manager)

Authors
  1. Yutaka S. Sato
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  2. Hiroyuki Kokawa
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  3. Masatoshi Enomoto
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  4. Shigetoshi Jogan
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Sato, Y.S., Kokawa, H., Enomoto, M. et al. Microstructural evolution of 6063 aluminum during friction-stir welding. Metall Mater Trans A 30, 2429–2437 (1999). https://doi.org/10.1007/s11661-999-0251-1

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  • DOI: https://doi.org/10.1007/s11661-999-0251-1

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