Skip to main content
SpringerLink
Log in

Mechanical properties and failure behavior of AZ61 magnesium alloy at high temperatures

  • Metals
  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

To investigate the mechanical behavior of AZ61 alloy in a mushy state, uniaxial tensile tests of as-extruded AZ61 alloy have been implemented at temperatures of 475–575 °C at a strain rate of 3 s−1. Experimental results show that zero strength and zero ductility emerged at 575 and 525 °C, respectively. Abnormal coarse grains with sugar-like morphology and molten Mg17Al12 phases were observed in the brittle temperature range. The grain boundaries and surface were gradually covered partially or completely by a liquefied microstructure as temperatures increased. Small micropores developed into short cracks at temperatures above 525 °C and then to large cracks throughout the grain boundaries at 575 °C. It is therefore suggested that crack propagation was controlled by the quantity and distribution of molten phase in the mushy zone. Three types of interfacial wedge cracks are applied to explicate the fracture behavior of the alloy at elevated temperatures.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9

Similar content being viewed by others

References

  1. Luo AA (2013) Applications: aerospace, automotive and other structural applications of magnesium. In: Pekguleryuz MO, Kainer KU, Kaya AA (eds) Fundamentals of magnesium alloy metallurgy. Woodhead, Cambridge, pp 266–316

    Chapter  Google Scholar 

  2. Mordike BL (2001) Development of highly creep resistant magnesium alloys. J Mater Process Tech 117:391–394

    Article  Google Scholar 

  3. Stjohn DH, Easton MA, Qian M, Taylor JA (2013) Grain refinement of magnesium alloys: a review of recent research, theoretical developments, and their application. Metall Mater Trans A 44:2935–2949

    Article  Google Scholar 

  4. Luo A, Pekguleryuz MO (1994) Cast magnesium alloys for elevated temperature applications. J Mater Sci 29:5259–5271. https://doi.org/10.1007/BF01171534

    Article  Google Scholar 

  5. Yu Y, Arai K, Itoh S, Kamado S, Kojima Y (2005) Realization of high strength and high ductility for AZ61 magnesium alloy by severe warm working. Sci Technol Adv Mater 6:185–194

    Article  Google Scholar 

  6. Koh Y, Kim D, Seok DY, Bak J, Kim SW, Lee YS, Chung K (2015) Characterization of mechanical property of magnesium az31 alloy sheets for warm temperature forming. Int J Mech Sci 93:204–217

    Article  Google Scholar 

  7. Chino Y, Kimura K, Mabuchi M (2008) Twinning behavior and deformation mechanisms of extruded AZ31 mg alloy. Mater Sci Eng A 486:481–488

    Article  Google Scholar 

  8. Zhu SQ, Yan HG, Xia WJ, Liu JZ, Jiang JF (2009) Influence of different deformation processing on the AZ31 magnesium alloy sheets. J Mater Sci 44:3800–3806. https://doi.org/10.1007/s10853-009-3513-9

    Article  Google Scholar 

  9. Li L, Zheng M (2015) Theoretical research on rheological behavior of semisolid slurry of magnesium alloy AZ91D. Comput Mater Sci 102:202–207

    Article  Google Scholar 

  10. Meng Y, Fukushima S, Sugiyama S, Yanagimoto J (2015) Cold formability of AZ31 wrought magnesium alloy undergoing semisolid spheroidization treatment. Mater Sci Eng A 624:148–156

    Article  Google Scholar 

  11. Kleiner S, Ogris E, Beffort O, Uggowitzer PJ (2010) Semi-solid metal processing of aluminum alloy A356 and magnesium alloy AZ91: comparison based on metallurgical consideration. Adv Eng Mater 5:653–658

    Article  Google Scholar 

  12. Flemings MC (1991) Behavior of metal alloys in the semisolid state. Metall Trans A 22:269–293

    Article  Google Scholar 

  13. Dahle AK, Suéry M (2010) Deformation Behavior of Aluminum Alloys during Solidification. Mater Sci Forum 649:337–342

    Article  Google Scholar 

  14. Rauh H, Hippsley CA, Bullough R (1989) The effect of mixed-mode loading on stress-driven solute segregation during high-temperature brittle intergranular fracture. Acta Metall 37:269–279

    Article  Google Scholar 

  15. Sinha S, Kim DI, Fleury E, Suwas S (2015) Effect of grain boundary engineering on the microstructure and mechanical properties of copper containing austenitic stainless steel. Mater Sci Eng A 626:175–185

    Article  Google Scholar 

  16. Nesterova EV, Bouvier S, Bacroix B (2015) Microstructure evolution and mechanical behavior of a high strength dual-phase steel under monotonic loading. Mater Charact 100:152–162

    Article  Google Scholar 

  17. Hippsley CA (2013) Brittle intergranular fracture at elevated temperatures in low-alloy steel. Mater Sci Tech 1:475–479

    Article  Google Scholar 

  18. Molina R, Aluminum Amalberto P, Rosso-Politecnico M, Di T (2011) Mechanical characterization of aluminium alloys for high temperature applications part1: Al–Si–Cu alloys. Metall Sci Tecn 14:1650–1656

    Google Scholar 

  19. Jiang B, Liu WJ, Chen SQ, Yang QS, Pan FS (2011) Mechanical properties and microstructure of as-extruded AZ31 mg alloy at high temperatures. Mater Sci Eng A 530:51–56

    Article  Google Scholar 

  20. Li M, Tamura T, Omura N, Miwa K (2010) The solidification behavior of the AZ61 magnesium alloy during electromagnetic vibration processing. J Alloys Compd 494:116–122

    Article  Google Scholar 

  21. Olguín-González ML, Hernández-Silva D, García-Bernal MA, Sauce-Rangel VM (2014) Hot deformation behavior of hot-rolled AZ31 and AZ61 magnesium alloys. Mater Sci Eng A 597:82–88

    Article  Google Scholar 

  22. Yan H, Zhou B (2006) Thixotropic deformation behavior of semi-solid AZ61 magnesium alloy during compression process. Mater Sci Eng B 132:179–182

    Article  Google Scholar 

  23. Anaraki MT, Sanjari M, Akbarzadeh A (2008) Modeling of high temperature rheological behavior of AZ61 mg-alloy using inverse method and ANN. Mater Des 29:1701–1706

    Article  Google Scholar 

  24. Xu Y, Hu L, Sun Y (2013) Deformation behaviour and dynamic recrystallization of AZ61 magnesium alloy. J Alloys Compd 580:262–269

    Article  Google Scholar 

  25. Tsao LC, Chen CH, Wu RW, Chang SY, Chen RS (2015) Plastic flow behavior, microstructure, and corrosion behavior of AZ61 mg alloy during hot compression deformation. J Manuf Processes 18:167–174

    Article  Google Scholar 

  26. Liao C, Wu H, Wu C, Zhu F, Lee S (2014) Hot deformation behavior and flow stress modeling of annealed az61 mg alloys. Prog Nat Sci: Mater Int 24:253–265

    Article  Google Scholar 

Download references

Acknowledgements

The authors are grateful for the financial supports from the Chongqing Science and Technology Commission (cstc2013jcyjC60001, cstc2014jcyjjq0041, cstc2014jcyjjq50002, and cstc2013jcyjA50030); the National Natural Science Foundation of China (51701035, 51531002, 51171212, and 51474043); and the National Science and Technology Program of China (2013CB632200).

Author information

Authors and Affiliations

  1. College of Materials Science and Engineering, Chongqing University, Chongqing, 400030, China

    Wenjun Liu, Bin Jiang, Siqiang Chen & Fusheng Pan

  2. Chongqing Academy of Science and Technology, Chongqing, 401123, China

    Wenjun Liu, Bin Jiang & Suqin Luo

Authors
  1. Wenjun Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Bin Jiang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Suqin Luo
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Siqiang Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Fusheng Pan
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Bin Jiang.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Liu, W., Jiang, B., Luo, S. et al. Mechanical properties and failure behavior of AZ61 magnesium alloy at high temperatures. J Mater Sci 53, 8536–8544 (2018). https://doi.org/10.1007/s10853-018-2125-7

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10853-018-2125-7

Keywords

Search

Navigation