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Influence of cooling rate after homogenization on microstructure and mechanical properties of aluminum alloy 7050

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Abstract

The influence of cooling rate (0.009–220 °C/s) after homogenization on the microstructure and mechanical properties of high strength aluminum alloy 7050 was investigated by tensile testing, optical microscope, X-ray diffraction, scanning electron microscope, and transmission electron microscope. A lower cooling rate after homogenization resulted in lower mechanical properties after aging. The drop in strength was significant when the cooling rate was decreased from 0.5 °C/s to 0.1 °C/s. A lower cooling rate gave rise to a larger amount of remnant S(Al2CuMg) phase and a higher fraction of recrystallization after solution heat treatment. Consequently, the increase in strength after aging due to precipitation hardening and substructure hardening was less significant in the case of slow cooling. This was supposed to be responsible for the lower mechanical properties due to a lower cooling rate after homogenization.

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References

  1. L. D. Anne, J. Light Met. 1, 133 (2001).

    Article  Google Scholar 

  2. G. Itoh, H. Saitoh, and B. L. Ou, J. Jpn. Inst. Light Met. 36, 485 (1986).

    Article  CAS  Google Scholar 

  3. Y. Miyagi and M. Hirano, J. Jpn. Inst. Light Met. 26, 501 (1976).

    Article  Google Scholar 

  4. L. M. Wu, W. H. Wang, and Y. F. Hsu, J. Alloys Compd 456, 163 (2008).

    Article  CAS  Google Scholar 

  5. J. D. Robson, Mater. Sci. Eng. A 382, 112 (2004).

    Article  Google Scholar 

  6. D. Godard and P. Archambault, Acta Mater. 50, 2319 (2002).

    Article  CAS  Google Scholar 

  7. X. G. Fan, D. M. Jiang, and Q. C. Meng, Mater. Lett. 60, 1475 (2006).

    Article  CAS  Google Scholar 

  8. D. A. Porter and K. E. Easterling, Phase Transformation in Metals and Alloys, pp. 292, Alden Press, Oxford (1981)

    Google Scholar 

  9. J. D. Robson and P. B. Prangnell, Mater. Sci. Technol. 18, 607 (2002).

    Article  CAS  Google Scholar 

  10. O. Engler, E. Sachot, and J. C. Ehrstrom, Mater. Sci. Technol. 12, 717 (1996).

    Article  CAS  Google Scholar 

  11. T. Wang, Z. M. Yin, and K. Shen, Trans. Nonferrous Met. Soc. China 17, 548 (2007).

    Article  Google Scholar 

  12. M. J. Starink and S. C. Wang, Acta Mater. 51, 5131 (2003).

    Article  CAS  Google Scholar 

  13. B. Morere, J. C. Ehrstrom, and P. J. Gregson, Metall. Mater. Trans. A 31, 2503 (2000).

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Materials Science and Engineering, Central South University, Changsha, 410083, China

    S. D. Liu, Y. B. Yuan, C. B. Li, J. H. You & X. M. Zhang

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  1. S. D. Liu
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  2. Y. B. Yuan
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  3. C. B. Li
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  4. J. H. You
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  5. X. M. Zhang
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Correspondence to S. D. Liu.

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Liu, S.D., Yuan, Y.B., Li, C.B. et al. Influence of cooling rate after homogenization on microstructure and mechanical properties of aluminum alloy 7050. Met. Mater. Int. 18, 679–683 (2012). https://doi.org/10.1007/s12540-012-4016-9

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  • DOI: https://doi.org/10.1007/s12540-012-4016-9

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