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Vol. 27 No. 1 (2015): Vol 27 Issue 1

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Study of Microstructure and Modification Effect of Mg-Sr Master Alloy on AZ91D Magnesium Alloy

https://doi.org/10.14233/ajchem.2015.16856
Xiuyun Sun
National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, P.R. China
Guimin Lu
National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, P.R. China

Corresponding Author(s) : Guimin Lu

gmlu@ecust.edu.cn

Asian Journal of Chemistry, Vol. 27 No. 1 (2015): Vol 27 Issue 1

Abstract

The microstructure of Mg-Sr master alloy and its modification effect on the microstructure of AZ91D magnesium alloy were studied. Mg-Sr master alloy prepared by molten salt electrolysis was composed of a-Mg, Mg17Sr2, Mg2Sr, Mg23Sr6 phases. With increasing Sr content, the morphology of the eutectic b-Mg17Al12 transformed from the continuous meshy distribution to a granular one. It was found that a small amount of Sr (0.01-0.03 %) added to the AZ91D magnesium alloy led to the b-Mg17Al12 grain size distinctly decreasing. The Sr addition was not only effective in modifying the eutectic b-Mg17Al12, but also had a lasting effect on maintaining a fine structure. The optimum Sr content and holding time to optimize the AZ91D magnesium alloy were 0.02 % and 150 min, respectively.

Keywords

Mg-Sr alloy Modification Sr content Holding time
Sun, X., & Lu, G. (2014). Study of Microstructure and Modification Effect of Mg-Sr Master Alloy on AZ91D Magnesium Alloy. Asian Journal of Chemistry, 27(1), 199–204. https://doi.org/10.14233/ajchem.2015.16856
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References
  1. B.L. Mordike and T. Ebert, Mater. Sci. Eng. A, 302, 37 (2001); doi:10.1016/S0921-5093(00)01351-4.
  2. W.H. Cui, G.H. Min and J.C. Liu, Rare Met. Mater. Des., 39, 273 (2010).
  3. R.M. Pillai, Proceedings of the 2nd AFS International Conference on Molten Aluminum Processing, November (1989).
  4. A. Pacz, US Patent 1,387,900 (1921).
  5. A.K. Dahle, K. Nogita, S.D. McDonald, C. Dinnis and L. Lu, Mater. Sci. Eng. A, 413–414, 243 (2005); doi:10.1016/j.msea.2005.09.055.
  6. S.S. Sreeja Kumari, R.M. Pillai and B.C. Pai, J. Light Met., 460, 472 (2008).
  7. K. Suresh, K.P. Rao, Y.V.R.K. Prasad, N. Hort and K.U. Kainer, Mater. Sci. Eng. A, 588, 272 (2013); doi:10.1016/j.msea.2013.09.031.
  8. W. Prukkanon, N. Srisukhumbowornchai and C. Limmaneevichitr, J. Alloys Comp., 477, 454 (2009); doi:10.1016/j.jallcom.2008.10.016.
  9. Q.L. Li, T.D. Xia, Y.F. Lan, P.F. Li and L. Fan, Mater. Sci. Eng. A, 588, 97 (2013); doi:10.1016/j.msea.2013.09.017.
  10. L.P. Wang, E.J. Guo and B.X. Ma, J. Rare Earths, 26, 105 (2008); doi:10.1016/S1002-0721(08)60047-2.
  11. S.D. McDonald, K. Nogita and A.K. Dahle, Acta Mater., 52, 4273 (2004); doi:10.1016/j.actamat.2004.05.043.
  12. S. Hegde and K.N. Prabhu, J. Mater. Sci., 43, 3009 (2008); doi:10.1007/s10853-008-2505-5.
  13. S.-S. Shin, E.-S. Kim, G.-Y. Yeom and J.-C. Lee, Mater. Sci. Eng. A, 532, 151 (2012); doi:10.1016/j.msea.2011.10.076.
  14. S.A. Argyropoulos and L.S. Chow, J. Light Met., 2, 253 (2002); doi:10.1016/S1471-5317(03)00009-9.
  15. H.-M. Liao, S.-Y. Long, C.-B. Guo and Z.-B. Zhu, Trans. Nonferr. Metals Soc. China, 18 (Suppl. 1), s44 (2008); doi:10.1016/S1003-6326(10)60172-0.
  16. C.A. Aliravci, J.E. Gruzleski and F.C. Dimaylga, AFS Trans., 115, 353 (1992).
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