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Enhanced superplasticity of magnesium alloy AZ31 obtained through equal-channel angular pressing with back-pressure

  • Ultrafine-Grained Materials
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Abstract

Excellent superplastic elongations (in excess of 1,200%) were achieved in a commercial cast AZ31 alloy processed by low temperature equal-channel angular pressing (ECAP) with a back-pressure to produce a bimodal grain structure. In contrast, AZ31 alloy processed by ECAP at temperatures higher than 200 °C showed a reasonably uniform grain structure and relatively low ductility. It is suggested that a bimodal grain structure is advantageous because the larger grains contribute to strain hardening thus delaying the onset of necking, while grain boundary sliding associated with small grains provides a stabilizing effect due to enhanced strain rate sensitivity.

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References

  1. Watanabe H, Tsutsui H, Mukai T et al (2000) Mater Sci Forum 350:171

    Article  Google Scholar 

  2. Wu X, Liu Y, Hao H (2001) Mater Sci Forum 357–359:363

    Article  Google Scholar 

  3. Watanabe H, Tsutsui H, Mukai T et al (2001) Int J Plast 17(3):387. doi:https://doi.org/10.1016/S0749-6419(00)00042-5

    Article  CAS  Google Scholar 

  4. Lin HK, Huang JC (2002) Mater Trans 43(10):2424. doi:https://doi.org/10.2320/matertrans.43.2424

    Article  CAS  Google Scholar 

  5. Bussiba A, Artzy AB, Shtechman A et al (2001) Mater Sci Eng A 302(1):56. doi:https://doi.org/10.1016/S0921-5093(00)01354-X

    Article  Google Scholar 

  6. Watanabe H, Mukai T, Ishikawa K et al (1999) Keikinzoku/J Jpn Inst Light Metals 49(8):401 (in Japanese)

    Article  CAS  Google Scholar 

  7. Chuvil′deev VN, Kopylov VI, Gryaznov MY et al (2003) Doklady Akademii Nauk 391(1):47 (in Russian)

    Google Scholar 

  8. Mukai T, Yamanoi M, Watanabe H et al (2001) Scripta Mater 45(1):89. doi:https://doi.org/10.1016/S1359-6462(01)00996-4

    Article  CAS  Google Scholar 

  9. Lin HK, Huang JC et al (2005) Mater Sci Eng A 402(1–2):250. doi:https://doi.org/10.1016/j.msea.2005.01.010

    Article  Google Scholar 

  10. Agnew SR, Stoica GM, Chen LJ et al (2002) In: Zhu YT et al (eds) Ultrafine grained materials II. TMS annual meeting, pp 643

  11. Kim WJ, Chung SW, Chung CS et al (2001) Acta Mater 49:3337. doi:https://doi.org/10.1016/S1359-6454(01)00008-8

    Article  CAS  Google Scholar 

  12. Yi SB, Zaefferer S, Brokmeier H-G (2006) Mater Sci Eng A 424:275. doi:https://doi.org/10.1016/j.msea.2006.03.022

    Article  Google Scholar 

  13. Tan JC, Tan MJ (2003) Mater Sci Eng A 339:81. doi:https://doi.org/10.1016/S0921-5093(02)00097-7

    Article  Google Scholar 

  14. Yin DL, Zhang KF, Wang GF et al (2005) Mater Lett 59:1714. doi:https://doi.org/10.1016/j.matlet.2005.01.053

    Article  CAS  Google Scholar 

  15. Lapovok R, Estrin Y, Popov MV et al (2008) Adv Eng Mater 10(5):429

    Article  CAS  Google Scholar 

  16. Lapovok R, Thomson PF, Cottam R et al (2005) J Mater Sci 40(7):1699. doi:https://doi.org/10.1007/s10853-005-0672-1

    Article  CAS  Google Scholar 

  17. Lapovok R, Thomson PF, Cottam R et al (2005) J Mater Res 20:1375. doi:https://doi.org/10.1557/JMR.2005.0180

    Article  CAS  Google Scholar 

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Acknowledgements

This work was supported by the Australian Research Council through Linkage International Grant no. LX0668485. The authors would like to express their gratitude to Professor T.G. Langdon for useful discussions.

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Authors and Affiliations

  1. ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering, Monash University, Clayton, VIC, 3800, Australia

    R. Lapovok, Y. Estrin & S. Rundell

  2. CSIRO Division of Materials Science and Engineering, Clayton, VIC, 3168, Australia

    Y. Estrin

  3. IWW, TU Clausthal, Agricolastr. 6, 38678, Clausthal-Zellerfeld, Germany

    M. V. Popov

  4. Monash Centre for Electron Microscopy, Monash University, Clayton, VIC, 3800, Australia

    T. Williams

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  1. R. Lapovok
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  2. Y. Estrin
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  3. M. V. Popov
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  4. S. Rundell
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  5. T. Williams
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Correspondence to R. Lapovok.

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Lapovok, R., Estrin, Y., Popov, M.V. et al. Enhanced superplasticity of magnesium alloy AZ31 obtained through equal-channel angular pressing with back-pressure. J Mater Sci 43, 7372–7378 (2008). https://doi.org/10.1007/s10853-008-2685-z

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  • DOI: https://doi.org/10.1007/s10853-008-2685-z

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