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Thermally Activated Slip in Rare Earth Containing Mg–Mn–Ce Alloy, ME10, Compared with Traditional Mg–Al–Zn Alloy, AZ31

  • Vikaas Bajikar
  • Jishnu J. Bhattacharyya
  • Nathan Peterson
  • Sean R. AgnewEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

The thermally activated deformation of textured Mg alloys is evaluated using repeated stress relaxation tests analyzed with the assistance of elasto-viscoplastic self-consistent (EVPSC) polycrystal modeling. The data, presented in a Haasen plot, suggests that the superposition of at least two mechanisms controls the thermally activated glide of dislocations in both a rare-earth containing alloy, ME10, and the conventional alloy, AZ31: forest dislocation interactions and a mechanism with a lower activation volume (solute–dislocation interaction and/or cross-slip).

Keywords

Strain rate sensitivity Activation volume Haasen plot Stress relaxation Solute 

Notes

Acknowledgements

The authors wish to thank the US National Science Foundation, Division of Materials Research, Metals and Metallic Nanostructures (NSF-DMR-MMN) program, Grant Number: 1810197, overseen by program manager Dr. Lynnette Madsen for their financial support.

References

  1. 1.
    D. Caillard and J.L. Martin: Thermally Activated Mechanisms in Crystal Plasticity, Pergamon Materials Series Vol 8, Elsevier, 2003.Google Scholar
  2. 2.
    P. Spätig, J. Bonneville, and J-L. Martin: Mater. Sci. Eng. A, 1993, vol. 167, pp. 73–79.Google Scholar
  3. 3.
    W. A. Curtin: Scr. Mater., 2010, vol. 63, pp. 917–20.Google Scholar
  4. 4.
    H Conrad, L Hays, G Schoeck, and H Wiedersich: Acta Metall., 1961, vol. 9, pp. 367–78.Google Scholar
  5. 5.
    D.H Sastry, Y.V.R.K Prasad, and K.I Vasu: Curr. Sci., 1970, pp. 97–100.Google Scholar
  6. 6.
    R. A. Mulford: Acta Metall., 1979, vol. 27, pp. 1115–24.Google Scholar
  7. 7.
    P Lukac and Zuzanka Trojanová: Key Enginnring Mater., 2011, vol. 465, pp. 101–4.Google Scholar
  8. 8.
    Zuzanka Trojanová, Kristián Máthis, Pavel Lukáč, Gergely Németh, and František Chmelík: Mater. Chem. Phys., 2011, vol. 130, pp. 1146–50.Google Scholar
  9. 9.
    Zuzanka Trojanová, Peter Palček, Pavel Lukáč, and Zdeněk Drozd: Magnes. Alloy. Solid Liq. States, 2014, pp. 3–48.Google Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Vikaas Bajikar
    • 1
  • Jishnu J. Bhattacharyya
    • 1
  • Nathan Peterson
    • 1
  • Sean R. Agnew
    • 1
    Email author
  1. 1.University of VirginiaCharlottesvilleUSA

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