Elasticity and internal friction of magnesium alloys at room and elevated temperatures

Abstract

Elastic moduli (Young’s modulus, shear modulus and bulk modulus) of three ultrafine-grained Mg-based alloys AZ31, AE42 and LAE442 were studied by resonant ultrasound spectroscopy. Evolution of these moduli and the corresponding high-frequency internal friction were measured in a temperature cycle between the room temperature and 310 °C, i.e., with heating above the recrystallization threshold temperature. The results reveal that the Li content in the LAE442 alloy has a strong impact on its elastic performance, resulting in a high E/ρ ratio, which is consistent with predictions of ab initio calculations. Simultaneously, the relaxation due to grain boundary sliding has significantly lower activation energy in LAE442 alloy.

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

Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6

References

  1. 1

    Yu Q, Qi L, Mishra RK, Li J, Minor AM (2013) Reducing deformation anisotropy to achieve ultrahigh strength and ductility in Mg at the nanoscale. Proc Natl Acad Sci 110(33):13289–13293

    Article  Google Scholar 

  2. 2

    Janeček M, Popov M, Krieger MG, Hellmig RJ, Estrin Y (2007) Mechanical properties and microstructure of a Mg alloy AZ31 prepared by equal-channel angular pressing. Mater Sci Eng, A 462(1–2):116–120

    Article  Google Scholar 

  3. 3

    Furui M, Xu C, Aida T, Inoue M, Anada H, Langdon TG (2005) Improving the superplastic properties of a two-phase Mg–8%Li alloy through processing by ECAP. Mater Sci Eng, A 410–411:439–442

    Article  Google Scholar 

  4. 4

    Phasha MJ, Ngoepe PE (2012) An alternative DFT-based model for calculating structural and elastic properties of random binary HCP, FCC and BCC alloys: Mg–Li system as test case. Intermetallics 21:88–96

    Article  Google Scholar 

  5. 5

    Dai JH, Wu X, Song Y (2013) Influence of alloying elements on phase stability and elastic properties of aluminum and magnesium studied by first principles. Comput Mater Sci 74:86–91

    Article  Google Scholar 

  6. 6

    Pavlic O, Ibarra-Hernandez W, Valencia-Jaime I, Singh S, Avendano-Franc G, Raabe D, Romero AH (2017) Design of Mg alloys: the effects of Li concentration on the structure and elastic properties in the Mg–Li binary system by first principles calculations. J Alloy Compd 691:15–25

    Article  Google Scholar 

  7. 7

    Olsson PAT (2015) First principles investigation of the finite temperature dependence of the elastic constants of zirconium, magnesium and gold. Comput Mater Sci 99:361–372

    Article  Google Scholar 

  8. 8

    Moitra A (2013) Grain size effect on microstructural properties of 3d nanocrystalline magnesium under tensile deformation. Comput Mater Sci 79:247–251

    Article  Google Scholar 

  9. 9

    Karewar S, Gupta N, Groh S, Martinez E, Caro A, Srinivasan SG (2017) Effect of Li on the deformation mechanisms of nanocrystalline hexagonal close packed magnesium. Comput Mater Sci 126:252–264

    Article  Google Scholar 

  10. 10

    Sheng G, Bhattacharyya S, Zhang H et al (2012) Effective elastic properties of polycrystals based on phase-field description. Mater Sci Eng, A 554:67–71

    Article  Google Scholar 

  11. 11

    Watanabe H, Mukai T, Sugioka M, Ishikawa K (2004) Elastic and damping properties from room temperature to 673 K in an AZ31 magnesium alloy. Scripta Mater 51:291–295

    Article  Google Scholar 

  12. 12

    Koller M, Sedlak P, Seiner H, Sevcik M, Landa M, Straska J, Janecek M (2015) An ultrasonic internal friction study of ultrafine-grained AZ31 magnesium alloy. J Mater Sci 50:808–818. https://doi.org/10.1007/s10853-014-8641-1

    Article  Google Scholar 

  13. 13

    Seiner H, Bodnárová L, Sedlák P, Janeček M, Srba O, Král R, Landa M (2010) Application of ultrasonic methods to determine elastic anisotropy of polycrystalline copper processed by equal-channel angular pressing. Acta Mater 58:235–247

    Article  Google Scholar 

  14. 14

    Leisure RG, Willis FA (1997) Resonant ultrasound spectroscopy. J Phys: Condens Matter 9:6001–6029

    Google Scholar 

  15. 15

    Sedlak P, Seiner H, Zidek J, Janovska M, Landa M (2014) Determination of all 21 independent elastic coefficients of generally anisotropic solids by resonant ultrasound spectroscopy: benchmark examples. Exp Mech 54:1073–1085

    Article  Google Scholar 

  16. 16

    Nowick AS, Berry BS (1972) Anelastic relaxation in crystalline solids. Academic Press, New York

    Google Scholar 

  17. 17

    Minarik P, Kral R, Pesicka J, Danis S, Janecek M (2016) Microstructure characterization of LAE442 magnesium alloy processed by extrusion and ECAP. Mater Charact 112:1–10

    Article  Google Scholar 

  18. 18

    Chang TC, Wang JY, Chu CL, Lee S (2006) Mechanical properties and microstructures of various Mg–Li alloys. Mater Lett 60:3272–3276

    Article  Google Scholar 

  19. 19

    Minarik P, Cizek J, Vesely J, Hruska P, Hadzima B, Kral R (2017) Nanocrystalline aluminium particles inside Mg–4Li–4Al–2RE magnesium alloy after severe plastic deformation. Mater Charact 127:248–252

    Article  Google Scholar 

  20. 20

    Slutsky LJ, Garland CW (1957) Elastic constants of magnesium from 4.2-degrees-K TO 300-degrees-K. Phys Rev 107:972–976

    Article  Google Scholar 

  21. 21

    Pugh SF (1954) Relations between the elastic moduli and the plastic properties of polycrystalline pure metals. Philos Mag 45:823–843

    Article  Google Scholar 

  22. 22

    Stráská J, Stráský J, Minárik P, Janeček M, Hadzima B (2017) Continuous measurement of m-parameter for analyzing plastic instability in a superplastic ultra-fine grained magnesium alloy. Mater Sci Eng, A 684:110–114

    Article  Google Scholar 

  23. 23

    Minárik P, Kral R, Cizek J, Chmelik F (2016) Effect of different c/a ratio on the microstructure and mechanical properties in magnesium alloys processed by ECAP. Acta Mater 107:83–95

    Article  Google Scholar 

  24. 24

    Koike J, Ohyama R, Kobayashi T, Suzuki M, Maruyama K (2003) Grain-boundary sliding in AZ31 magnesium alloys at room temperature to 523 K. Mater Trans 44:445–451

    Article  Google Scholar 

  25. 25

    Haferkamp H, Boehm R, Holzkamp U, Jaschik C, Kaese V, Niemeyer M (2001) Alloy development, processing and applications in magnesium lithium alloys. Mater Trans 42:1160–1166

    Article  Google Scholar 

Download references

Acknowledgements

This work was financially supported by the Czech Science Foundation Project Nos. 17-13573S and 14-13415S and by ERDF under the project “Nanomaterials centre for advanced applications,” Project No. CZ.02.1.01/0.0/0.0/15_003/0000485.

Author information

Affiliations

Authors

Corresponding author

Correspondence to Petr Sedlák.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Janovská, M., Minárik, P., Sedlák, P. et al. Elasticity and internal friction of magnesium alloys at room and elevated temperatures. J Mater Sci 53, 8545–8553 (2018). https://doi.org/10.1007/s10853-018-2136-4

Download citation

Keywords

  • Alloy LAE442
  • Grain Boundary Sliding (GBS)
  • Resonant Ultrasound Spectroscopy (RUS)
  • Equal Channel Angular Pressing (ECAP)
  • ECAP Passes