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Dissolution of Eutectic β-Mg17Al12 Phase in Magnesium AZ91 Cast Alloy at Temperatures Close to Eutectic Temperature

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Abstract

Knowledge on the dissolution kinetics of β-eut phase in cast Mg AZ91 alloy at temperatures close to the eutectic temperature is very useful for various processes of the alloy. In the present study, dissolution of β-eut phase has been investigated experimentally and considered theoretically. Results have confirmed that the kinetics of β-eut dissolution is basically diffusion controlled. Optimum times for dissolution heat treatment practice of different sizes of cast microstructure which are cooling rate dependant during casting could be suggested based on the present calculation. For fusion welding of the alloy, the present results indicate the difficulty of having a heating rate lower than the critical value (“critical heating rate”) for a significant reduction of the phase to avoid constitutional liquation.

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References

  1. J.F. King, Magnesium: Commodity or Exotic? Mater. Sci. Technol., 2007, 23(1), p 1–14

    Article  CAS  Google Scholar 

  2. L.A. Dobrzanski, T. Tanski, L. Cízek, and Z. Brytan, Structure and Properties of Magnesium Cast Alloys, J. Mater. Process. Technol., 2007, 192–193, p 567–574

    Article  Google Scholar 

  3. T.P. Zhu, Z.W. Chen, and W. Gao, Effects of Microstructure and Partial Melting on Tensile Properties of AZ91 Magnesium Cast Alloy, Mater. Sci. Forum, 2007, 546–549, p 65–68

    Article  Google Scholar 

  4. X. Du and E. Zhang, Microstructure and Mechanical Behaviour of Semi-Solid Die-Casting AZ91D Magnesium Alloy, Mater. Lett., 2007, 61(11–12), p 2333–2337

    Article  CAS  Google Scholar 

  5. S. Lun Sin, D. Dubé, and R. Tremblay, An Investigation on Microstructural and Mechanical Properties of Solid Mould Investment Casting of AZ91D Magnesium Alloy, Mater. Charact., 2008, 59(2), p 178–187

    Article  Google Scholar 

  6. H.T. Kang and T. Ostrom, Mechanical Behavior of Cast and Forged Magnesium Alloys and Their Microstructures, Mater. Sci. Eng. A, 2008, 490(1–2), p 52–56

    Google Scholar 

  7. I.A. Yakubtsov, B.J. Diak, C.A. Sager, B. Bhattacharya, W.D. MacDonald, and M. Niewczas, Effects of Heat Treatment on Microstructure and Tensile Deformation of Mg AZ80 Alloy at Room Temperature, Mater. Sci. Eng. A, 2008, 496(1–2), p 247–255

    Google Scholar 

  8. Y.Z. Lü, Q.D. Wang, W.J. Ding, X.Q. Zeng, and Y.P. Zhu, Fracture Behavior of AZ91 Magnesium Alloy, Mater. Lett., 2000, 44(5), p 265–268

    Article  Google Scholar 

  9. S. Kleiner, O. Beffort, A. Wahlen, and P.J. Uggowitzer, Microstructure and Mechanical Properties of Squeeze Cast and Semi-Solid Cast Mg–Al Alloys, J. Light Met., 2002, 2(4), p 277–280

    Article  Google Scholar 

  10. M.M. Avedesian and H. Baker, Magnesium and Magnesium Alloys, ASM International, 1999, p 79

  11. A. Stern and A. Munitz, Partially Melted Zone Microstructural Characterization from Gas Tungsten-Arc Bead on Plate Welds of Magnesium AZ91 Alloy, J. Mater. Sci. Lett., 1999, 18(11), p 853–855

    Article  CAS  Google Scholar 

  12. M. Marya and G.R. Edwards, The Laser Welding of Magnesium Alloy AZ91, Weld. World, 2000, 44(2), p 31–37

    CAS  Google Scholar 

  13. A. Munitz, C. Cotler, A. Stern, and G. Kohn, Mechanical Properties and Microstructure of Gas Tungsten Arc Welded Magnesium AZ91D Plates, Mater. Sci. Eng. A, 2001, 302(1), p 68–73

    Article  Google Scholar 

  14. M. Marya and G.R. Edwards, Influence of Laser Beam Variables on AZ91D Weld Fusion Zone Microstructure, Sci. Tech. Weld. Join., 2002, 7(5), p 286–293

    CAS  Google Scholar 

  15. M. Marya, G.R. Edwards, and S. Liu, An Investigation on the Effects of Gases in GTA Welding of a Wrought AZ80 Magnesium Alloy, Weld. J., 2004, 83(7), p 203s–212s

    Google Scholar 

  16. X. Cao, M. Xiao, M. Jahazi, and J.P. Immarigeon, Continuous Wave ND:YAG Laser Welding of Sand-Cast ZE41A-T5 Magnesium Alloys, Mater. Manuf. Process., 2005, 20(6), p 987–1004

    Article  CAS  Google Scholar 

  17. T.P. Zhu, Z.W. Chen, and W. Gao, Incipient Melting in Partially Melted Zone During Arc Welding of AZ91D Magnesium Alloy, Mater. Sci. Eng. A, 2006, 416(1–2), p 246–252

    Google Scholar 

  18. Z.D. Zhang, L.M. Liu, Y. Shen, and L. Wang, Mechanical Properties and Microstructures of a Magnesium Alloy Gas Tungsten Arc Welded with a Cadmium Chloride Flux, Mater. Charact., 2008, 59(1), p 40–46

    Article  CAS  Google Scholar 

  19. S. Kou, Welding Metallurgy, 2nd ed., Wiley, New York, 2002, p 321–329

    Google Scholar 

  20. C.H. Cáceres, W.J. Poole, A.L. Bowles, and C.J. Davidson, Section Thickness, Macrohardness and Yield Strength in High-Pressure Diecast Magnesium Alloy AZ91, Mater. Sci. Eng. A, 2005, 402(1–2), p 269–277

    Google Scholar 

  21. C.H. Cáceres, C.J. Davidson, J.R. Griffiths, and C.L. Newton, Effects of Solidification Rate and Ageing on the Microstructure and Mechanical Properties of AZ91 Alloy, Mater. Sci. Eng. A, 2002, 325(1–2), p 344–355

    Google Scholar 

  22. K.A. Hoffmann and S.T. Chiang, Computational Fluid Dynamics, Vol 1, 4th ed., Engineering Education System, Wichita, Kan, 2000, p 63–67

    Google Scholar 

  23. G. Moreau, J.A. Cornet, and D. Calais, Acceleration de la diffusion chimique sous irradiation dans le systeme aluminium-magnesium, J. Nucl. Mater, 1971, 38(2), p 197–202 (in French)

    Article  CAS  ADS  Google Scholar 

  24. A.K. Dahle, Y.C. Lee, M.D. Nave, P.L. Schaffer, and D.H. St John, Development of the As-Cast Microstructure in Magnesium–Aluminium Alloys, J. Light Met., 2001, 1(1), p 61–72

    Article  Google Scholar 

  25. Y. Wang, B. Sun, Q. Wang, Y. Zhu, and W. Ding, An Understanding of the Hot Tearing Mechanism in AZ91 Magnesium Alloy, Mater. Lett., 2002, 53(12), p 35–39

    Article  CAS  Google Scholar 

  26. D. Eskin, Q. Du, D. Ruvalcaba, and L. Katgerman, Experimental Study of Structure Formation in Binary Al-Cu Alloys at Different Cooling Rates, Mater. Sci. Eng. A, 2005, 405(1–2), p 1–10

    Google Scholar 

  27. M. Ohno, D. Mirkovic, and R. Schmid-Fetzer, Liquidus and Solidus Temperatures of Mg-Rich Mg-Al-Mn-Zn Alloys, Acta Mater., 2006, 54(15), p 3883–3891

    Article  CAS  Google Scholar 

  28. R.N. Lumley, R.G. Odonnell, D.R. Gunasegaram, and M. Givord, Heat Treatment of High-Pressure Die Castings, Metall. Mater. Trans. A, 2007, 38A(10), p 2564–2574

    Article  CAS  ADS  Google Scholar 

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Authors and Affiliations

  1. Department of Chemical & Materials Engineering, University of Auckland, Auckland, New Zealand

    Tianping Zhu & Wei Gao

  2. Department of Mechanical & Manufacturing Engineering, AUT University, Auckland, New Zealand

    Zhan W. Chen

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  1. Tianping Zhu
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  2. Zhan W. Chen
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  3. Wei Gao
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Correspondence to Tianping Zhu.

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Zhu, T., Chen, Z.W. & Gao, W. Dissolution of Eutectic β-Mg17Al12 Phase in Magnesium AZ91 Cast Alloy at Temperatures Close to Eutectic Temperature. J. of Materi Eng and Perform 19, 860–867 (2010). https://doi.org/10.1007/s11665-009-9539-y

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  • DOI: https://doi.org/10.1007/s11665-009-9539-y

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