Journal of Materials Science

, Volume 44, Issue 6, pp 1607–1612 | Cite as

Formation of a lamellar 14H-type long period stacking ordered structure in an as-cast Mg–Gd–Zn–Zr alloy

  • Y. J. Wu
  • D. L. LinEmail author
  • X. Q. Zeng
  • L. M. Peng
  • W. J. Ding


A novel as-cast Mg96.82Gd2Zn1Zr0.18 alloy was produced by conventional ingot metallurgy. By scanning electron microscope and transmission electron microscope observations, its as-cast microstructure is mainly composed of the α′-Mg solid solution, the coherent fine-lamellae and the eutectic. The β-phase ((Mg,Zn)3Gd) as the second phase in eutectic has a face-center cubic structure. While, the coherent lamellae consist of the 2H–Mg and the 14H-type long period stacking ordered (LPSO) structure. At present, the lamellar 14H-type LPSO structure has first been observed within α′-Mg matrix in the as-cast Mg–Gd–Zn–Zr alloys. It can be concluded that the lamellar 14H-type LPSO structure within α′-Mg matrix is a special structure obviously different from α-Mg matrix (2H-type structure) in structure, composition, and formation condition.


Rare Earth Average Chemical Composition Differential Thermal Analysis Trace Long Period Stack Order Coherent Relationship 



Thanks are given to the support from the National Nature Science Foundation (50471015) and the SEM and TEM Laboratories of Analytical and Testing Center of Shanghai Jiaotong University.


  1. 1.
    Peng QM, Hou XL, Wang LD et al (2009) Mater Des 30:292CrossRefGoogle Scholar
  2. 2.
    Riontinoa G, Massazza M, Lussanaa D et al (2008) Mater Sci Eng A 494:445CrossRefGoogle Scholar
  3. 3.
    Liu Y, Yuan GY, Lu C et al (2008) J Mater Sci 43:5527. doi: CrossRefGoogle Scholar
  4. 4.
    Aghion E, Gueta Y, Moscovitch N et al (2008) J Mater Sci 43:4870. doi: CrossRefGoogle Scholar
  5. 5.
    Lin L, Chen LJ, Liu Z (2008) J Mater Sci 43:4493. doi: CrossRefGoogle Scholar
  6. 6.
    Gu ZH, Wang HY, Zheng N et al (2008) J Mater Sci 43:980. doi: CrossRefGoogle Scholar
  7. 7.
    Tamura Y, Kida Y, Tamehiro H et al (2008) J Mater Sci 43:1249. doi: CrossRefGoogle Scholar
  8. 8.
    Luo ZP, Zhang SQ (2000) J Mater Sci Lett 19:813CrossRefGoogle Scholar
  9. 9.
    Kawamura Y, Hayashi K, Inoue A et al (2001) Mater Trans 42:1172CrossRefGoogle Scholar
  10. 10.
    Inoue A, Kawamura Y, Matsushita M (2001) J Mater Res 16:1894CrossRefGoogle Scholar
  11. 11.
    Abe E, Kawamura Y, Hayashi K et al (2002) Acta Mater 50:3845CrossRefGoogle Scholar
  12. 12.
    Wang BS, Liu YB, An J (2008) Mater Trans 49:1768CrossRefGoogle Scholar
  13. 13.
    Morikawa T, Kaneko K, Higashida K (2008) Mater Trans 49:1294CrossRefGoogle Scholar
  14. 14.
    Itoi T, Seimiya T, Kawamura Y (2004) Scr Mater 51:107CrossRefGoogle Scholar
  15. 15.
    Matsuda M, Ti S, Kawamura Y (2005) Mater Sci Eng A 393:269CrossRefGoogle Scholar
  16. 16.
    Chen B, Lin DL, Zeng XQ et al (2007) J Alloys Compd 440:94CrossRefGoogle Scholar
  17. 17.
    Kawamura Y, Morisaka T, Yamasaki M (2003) Mater Sci Forum 419–422:751CrossRefGoogle Scholar
  18. 18.
    Amiya K, Ohsuna T, Inoue A (2003) Mater Trans 44:2151CrossRefGoogle Scholar
  19. 19.
    Kawamura Y, Yamasaki M (2007) Mater Trans 48:2986CrossRefGoogle Scholar
  20. 20.
    Yamasaki M, Anan T, Yoshimoto S (2005) Scr Mater 53:799CrossRefGoogle Scholar
  21. 21.
    Yamasaki M, Sasaki M, Nishijima M et al (2007) Acta Mater 55:6798CrossRefGoogle Scholar
  22. 22.
    Nishijima M, Hiraga K, Yamasaki M (2008) Mater Trans 49:227CrossRefGoogle Scholar
  23. 23.
    Honma T, Ohkubo T, Kamado S et al (2007) Acta Mater 55:4137CrossRefGoogle Scholar
  24. 24.
    Gao Y, Wang QD, Gu JH et al (2008) J Alloys Compd. doi:
  25. 25.
    Li JP, Yang Z, Liu T et al (2007) Scr Mater 56:137CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Y. J. Wu
    • 1
    • 3
  • D. L. Lin
    • 1
    • 2
    Email author
  • X. Q. Zeng
    • 1
    • 3
  • L. M. Peng
    • 1
    • 3
  • W. J. Ding
    • 1
    • 3
  1. 1.National Engineering Research Center of Light Alloy Net FormingShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China
  2. 2.School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China
  3. 3.The State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China

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