Effect of Solute Atoms on the Twinning Deformation in Magnesium Alloys

  • Jing Tang
  • Wentao Jiang
  • Xiaobao Tian
  • Haidong FanEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


Deformation twinning is an important plastic deformation mode in magnesium and magnesium alloys. In this work, the solid solution hardening effect on the twinning deformation in Mg–Al binary alloys was investigated using molecular dynamics (MD) simulations. In the MD modeling, we studied the effect of solute atom concentration on the nucleation stress and Peierls stress of twinning dislocations on the \( \{ 10\bar{1} 2\} \) extension twin boundary (TB). The simulation results show that the nucleation stress of twinning dislocations decreases as the concentration of solute atoms increases, indicating a solid solution softening effect. However, the Peierls stress increases with the increasing concentration of solute atoms, suggesting a hardening effect. So, the total effect of solute atoms on the twinning deformation depends on the competition between these two effects.


Magnesium alloys Deformation twinning Solid solution hardening effect Molecular dynamics simulations 



The financial support from National Natural Science Foundation of China (11672193, U1730106) is acknowledged.


  1. 1.
    Agnew SR, Duygulu Ö, (2005) Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B. International Journal of Plasticity. 21 1161–1193CrossRefGoogle Scholar
  2. 2.
    Luo AA, (2013) Magnesium casting technology for structural applications. Journal of Magnesium and Alloys. 1 2–22CrossRefGoogle Scholar
  3. 3.
    Akhtar A, Teghtsoonian E, (1969) Solid solution strengthening of magnesium single crystals—I alloying behaviour in basal slip. Acta Metallurgica. 17 1339–1349CrossRefGoogle Scholar
  4. 4.
    Akhtar A, Teghtsoonian E, (1969) Solid solution strengthening of magnesium single crystals—ii the effect of solute on the ease of prismatic slip. Acta Metallurgica. 17 1351–1356CrossRefGoogle Scholar
  5. 5.
    Blake AH, Cáceres CH, (2008) Solid-solution hardening and softening in Mg–Zn alloys. Materials Science and Engineering: A. 483–484 161–163Google Scholar
  6. 6.
    Raeisinia B, Agnew SR, (2010) Using polycrystal plasticity modeling to determine the effects of grain size and solid solution additions on individual deformation mechanisms in cast Mg alloys. Scripta Materialia. 63 731–736CrossRefGoogle Scholar
  7. 7.
    Ghazisaeidi M, Hector LG, Curtin WA, (2014) Solute strengthening of twinning dislocations in Mg alloys. Acta Materialia. 80 278–287CrossRefGoogle Scholar
  8. 8.
    Stanford N, Barnett MR, (2013) Solute strengthening of prismatic slip, basal slip and twinning in Mg and Mg–Zn binary alloys. International Journal of Plasticity. 47 165–181CrossRefGoogle Scholar
  9. 9.
    Plimpton S, (1995) Fast Parallel Algorithms for Short-Range Molecular Dynamics. Journal of Computational Physics. 117 1–19CrossRefGoogle Scholar
  10. 10.
    Xiang-Yang L, James BA, Furio E, John AM, (1996) EAM potential for magnesium from quantum mechanical forces. Modelling and Simulation in Materials Science and Engineering. 4 293CrossRefGoogle Scholar
  11. 11.
    Fan H, Zhu Y, El-Awady JA, Raabe D, (2018) Precipitation hardening effects on extension twinning in magnesium alloys. International Journal of Plasticity. 106 186–202CrossRefGoogle Scholar
  12. 12.
    Ostapovets A, Gröger R, (2014) Twinning disconnections and basal–prismatic twin boundary in magnesium. Modelling and Simulation in Materials Science and Engineering. 22 025015CrossRefGoogle Scholar
  13. 13.
    Wang J, Liu L, Tomé CN, Mao SX, Gong SK, (2013) Twinning and De-twinning via Glide and Climb of Twinning Dislocations along Serrated Coherent Twin Boundaries in Hexagonal-close-packed Metals. Materials Research Letters. 1 81–88CrossRefGoogle Scholar
  14. 14.
    Xu B, Capolungo L, Rodney D, (2013) On the importance of prismatic/basal interfaces in the growth of \( (1\mathop 0\limits^{ - } 12) \) twins in hexagonal close packed crystals. Scripta Materialia. 68 901–904CrossRefGoogle Scholar
  15. 15.
    Fan H, El-Awady JA, Wang Q, (2015) Towards further understanding of stacking fault tetrahedron absorption and defect-free channels – A molecular dynamics study. Journal of Nuclear Materials. 458 176–186CrossRefGoogle Scholar
  16. 16.
    Alexander S, (2010) Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool. Modelling and Simulation in Materials Science and Engineering. 18 015012Google Scholar
  17. 17.
    Cantor B, Chang ITH, Knight P, Vincent AJB, (2004) Microstructural development in equiatomic multicomponent alloys. Materials Science and Engineering: A. 375–377 213–218Google Scholar
  18. 18.
    Yeh JW, Chen SK, Lin SJ, Gan JY, Chin TS, Shun TT, Tsau CH, Chang SY, (2004) Nanostructured high‐entropy alloys with multiple principal elements: novel alloy design concepts and outcomes. Advanced Engineering Materials. 6 299–303CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Jing Tang
    • 1
  • Wentao Jiang
    • 1
  • Xiaobao Tian
    • 1
  • Haidong Fan
    • 1
    Email author
  1. 1.Department of MechanicsSichuan UniversityChengduChina

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