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Microstructure Evolution and Hardness Variation of Mg-9Li-6Al-xLa (x = 0 and 2.0) Alloys Under Different Aging Parameters

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Abstract

Mg-9Li-6Al(LA96) and Mg-9Li-6Al-2La(LA96-2La), after solution treatment, were aged at 50°C and 150°C, respectively. The microstructure evolution and hardness variation of the alloys under different aging parameters were investigated. The results show that the morphology of MgLi2Al(θ) phases in LA96 changes from short and rod like to particulate during the aging period, and the size of particulate phase becomes larger and larger in the late aging period. The small, stripy α phases precipitate from β phases. The microstructure evolution leads to a continuous decrease in hardness. A temporary increase of hardness appears in the process of aging treatment at 150°C because of the precipitation of AlLi phases. The addition of La inhibits the variation of MgLi2Al morphology and the precipitation of small and stripy α phases in β phases, and it makes the decrease rate of hardness become lower in the process of aging treatment.

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References

  1. S. Schumann, Mater. Sci. Forum 488–489, 1 (2005).

    Article  Google Scholar 

  2. R.Z. Wu, Y.D. Yan, G.X. Wang, L.E. Murr, W. Han, Z.W. Zhang, and M.L. Zhang, Int. Mater. Rev. 60, 65 (2015).

    Article  Google Scholar 

  3. A.A. Nayeb-Hashemi, J.B. Clark, and A.D. Pelton, Bull. Alloy Phase Diagr. 5, 365 (1984).

    Article  Google Scholar 

  4. R.Z. Wu, Z.K. Qu, and M.L. Zhang, Rev. Adv. Mater. Sci. 24, 14 (2010).

    Google Scholar 

  5. Z.K. Qu, R.Z. Wu, H.B. Zhan, and M.L. Zhang, J. Alloys Compd. 536, 145 (2012).

    Article  Google Scholar 

  6. H.Y. Wu, J.Y. Lin, Z.W. Gao, and H.W. Chen, Mater. Sci. Eng. A 523, 7 (2009).

    Article  Google Scholar 

  7. R.Z. Wu and M.L. Zhang, Mater. Sci. Eng. A 520, 36 (2009).

    Article  Google Scholar 

  8. H.Y. Wu, Z.W. Gao, J.Y. Lin, and C.H. Chiu, J. Alloys Compd. 474, 158 (2009).

    Article  Google Scholar 

  9. G.S. Song, M. Staiger, and M. Kral, Mater. Sci. Eng. A 371, 371 (2004).

    Article  Google Scholar 

  10. F. Bach, M. Schaper, and C. Jaschik, Mater. Sci. Forum 419–422, 1037 (2003).

    Article  Google Scholar 

  11. R.Z. Wu, M.L. Zhang, and T. Wang, Trans. Nonferrous Met. Soc. China 17, s448–s451 (2007).

    Google Scholar 

  12. N. Saito, M. Mabuchi, M. Nakanishi, K. Kubota, and K. Higashi, Scripta Mater. 36, 551 (1997).

    Article  Google Scholar 

  13. R.Z. Wu, Y.S. Deng, and M.L. Zhang, J. Mater. Sci. 44, 4132 (2009).

    Article  Google Scholar 

  14. J.H. Zhang, D.P. Zhang, Z. Tian, J. Wang, K. Liu, H.Y. Lu, D.X. Tang, and J. Meng, Mater. Sci. Eng. A 489, 113 (2008).

    Article  Google Scholar 

  15. R.Z. Wu, X.Y. Guo, and D.Y. Li, J. Alloys Compd. 616, 408 (2014).

    Article  Google Scholar 

Download references

Acknowledgements

This work was supported by the Heilongjiang Province Youth Skeleton Program (1252G018), Research Fund for the Doctoral Program of Higher Education (20132304110006), Project of Science and Technology of Heilongjiang Province Education Department (12511068), Harbin City Innovative Talents Research Special Program (2012RFXXG094), the Fundamental Research Funds for the Central Universities (HEUCFQ1416), and Heilongjiang Province Natural Science Foundation (E201420).

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Authors and Affiliations

  1. Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science & Chemical Engineering, Harbin Engineering University, 145 Nantong Str., Harbin, 150001, People’s Republic of China

    Tianzi Wang, Zhikun Qu, Pengfei Fei & Ruizhi Wu

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  1. Tianzi Wang
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  2. Zhikun Qu
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  3. Pengfei Fei
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  4. Ruizhi Wu
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Correspondence to Ruizhi Wu.

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Wang, T., Qu, Z., Fei, P. et al. Microstructure Evolution and Hardness Variation of Mg-9Li-6Al-xLa (x = 0 and 2.0) Alloys Under Different Aging Parameters. JOM 67, 2442–2449 (2015). https://doi.org/10.1007/s11837-015-1306-y

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  • DOI: https://doi.org/10.1007/s11837-015-1306-y

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