Materials Transactions Online

Materials Transactions, Vol.59 No.01 (2018) pp.110-116
© 2017 Japan Foundry Engineering Society

Influence of Cooling Rate on Primary Particle and Solute Distribution in High-Speed Twin-Roll Cast Al-Mn Based Alloy Strip

Ram Song1, Yohei Harada1 and Shinji Kumai1

1Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan

Binary Al-Mn, ternary Al-Mn-Fe and Al-Mn-Si alloys were prepared by different cooling rates during solidification using direct chill-casting and high-speed twin-roll casting. Mn concentration and solute distribution in Al matrix were examined. The Mn concentration in solid solution was considered almost equivalent in as-cast condition. In contrast, much amount of decomposition of supersaturated Mn in solid solution occurred in high-speed twin-roll cast alloys after homogenization. In high-speed twin-roll cast strips, fine distribution of constituent particles in Al-Mn-Fe alloy and homogeneous solute distribution in Al matrix in Al-Mn-Si alloy were obtained due to the high cooling rate of the high-speed twin-roll casting. After homogenization treatment, coarsening and spheroidization of the constituent particles were mainly observed in Al-Mn-Fe alloy, while formation of fine dispersoids was predominantly observed in Al-Mn-Si alloy. Such differences in microstructure resulted from the decomposition behavior of supersaturated Mn in solid solution.

[doi:10.2320/matertrans.F-M2017843]

(Received 2017/08/08; Accepted 2017/10/06; Published 2017/12/25)

Keywords: high-speed twin-roll casting, cooling rate, solute distribution, aluminum-manganese-iron alloy, aluminum-manganese-silicon alloy

PDF(member)PDF (member) PDF(organization)PDF (organization) Order DocumentOrder Document Table of ContentsTable of Contents

REFERENCES

  1. F.J. Humphreys and M. Hatherly: Recrystallization and Related Annealing Phenomena: Second Edition, (Elsevier, Oxford, 2004) pp. 285-319.
  2. R.D. Doherty, D.A. Hughes, F.J. Humphreys, J.J. Jonas, D. Juul Jensen, M.E. Kassner, W.E. King, T.R. McNelley, H.J. McQueen and A.D. Rollett: Mater. Sci. Eng. A 238 (1997) 219-274.
  3. F.J. Humphreys: Acta Metall. 25 (1977) 1323-1344.
  4. F.J. Humphreys and P.N. Kalu: Acta Metall. 35 (1987) 2815-2829.
  5. K. Huang, O. Engler, Y.J. Li and K. Marthinsen: Mater. Sci. Eng. A 628 (2015) 216-229.
  6. M. Karlík, T. Mánik and H. Lauschmann: J. Alloy. Compd. 515 (2012) 108-113.
  7. Y.J. Li, A.M.F. Muggerud, A. Olsen and T. Furu: Acta Mater. 60 (2012) 1004-1014.
  8. A.M.F. Muggerud, E.A. Mørtsell, Y.J. Li and R. Holmestad: Mater. Sci. Eng. A 567 (2013) 21-28.
  9. T. Haga, K. Tkahashi, M. Ikawaand and H. Watari: J. Mater. Process. Technol. 153-154 (2004) 42-47.
  10. K. Suzuki, S. Kumai, Y. Saito, A. Sato and T. Haga: Mater. Trans. 45 (2004) 403-406.
  11. S. Kumai, K. Kobayashi, H. Zhu, K. Suzuki and T. Haga: JJILM 55 (2005) 500-506.
  12. K. Suzuki, S. Kumai, Y. Saito and T. Haga: Mater. Trans. 46 (2005) 2602-2608.
  13. M.S. Kim, Y. Arai, Y. Hori and S. Kumai: Mater. Trans. 51 (2010) 1854-1860.
  14. M.S. Kim and S. Kumai: Mater. Trans. 52 (2011) 856-861.
  15. D. Shimosaka, S. Kumai, F. Casarotto and S. Watanabe: Mater. Trans. 52 (2011) 920-927.
  16. M.S. Kim and S. Kumai: Mater. Trans. 54 (2013) 1930-1937.
  17. J.E. Hatch: Aluminum; Properties and Physical Metallurgy, (1984) pp. 204-206.
  18. L.A. Willey: Aluminum, Vol.1, ASM (1967) p. 359.
  19. S. Komatsu and S. Fujikawa: JJILM 47 (1997) 170-181.
  20. P. Kolby, C. Sigli and C.J. Simensen: Aluminum Alloys: Their Physical and Mechanical Properties, ICAA4, Atlanta, USA, (1994) pp. 508-512.
  21. P.C.M. De Haan, J. Van Rijkom and J.A.H. Söntgerath: Mater. Sci. Forum 217 (1996) 765-770.
  22. Y.J. Li and L. Arnberg: Acta Mater. 51 (2003) 3415-28.
  23. Y.J. Li and L. Arnberg: Mater. Sci. Eng. A 347 (2003) 130-135.
  24. K. Liu and X.G. Chen: Mater. Des. 84 (2015) 340-350.
  25. M. Dehmas, E. Aeby-Gautier, P. Archambault and M. Serrière: Metall. Mater. Trans., A 44 (2013) 1059-1073.
  26. D.T.L. Alexander and A.L. Greer: Acta Mater. 50 (2002) 2571-2583.
  27. E. Trømborg, A.L. Dons and L. Arnberg: Aluminium Alloys: Their Physical and Mechanical Properties, ICAA3, Trondheimin, SINTEF Metallurgy, (1992) pp. 270-275.


[JIM HOME] [JOURNAL ARCHIVES]

© 2017 Japan Foundry Engineering Society
Comments to us : editjt@jim.or.jp