Order-Disorder Transformations in the σ3 (111)/[110] Symmetrical Tilt Boundary in Tungsten


The structure of the σ3 (111)/[110] symmetrical tilt boundary in tungsten was modeled by molecular statics using Finnis-Sinclair type many body potentials. Several multiple structures have been found which are composed of two types of structural units and the interaction energy between these units is negative. Hence, order-disorder structural transitions may occur in the boundary with structures being ordered and/or disordered mixtures of the two units. The uansilion temperature is found to be 1158K if only the internal energy and configurational entropy arc included when evaluating the free energy. However, the transition temperature is 782K if the vibrational entropy is also incorporated. This demonstrates that the vibrational contribution to the entropy may be as important as the configurational contribution when considering the inierfacial transformations.

This is a preview of subscription content, access via your institution.


  1. 1

    G. J. Wang, A. P. Sutton and V. Vitek, Acta Metall. 32, 1093 (1984).

    CAS  Article  Google Scholar 

  2. 2

    V. Vitek, Y. Minonishi and G. J. Wang, J. Phys. France 46, C4 (1985).

    Google Scholar 

  3. 3

    Y. Oh and V. Vitek, Acta Metall. 34, 1941 (1986).

    Article  Google Scholar 

  4. 4

    I. Majid and P. D. Bristowe, Scripta Metall. 21, 1153 (1987).

    Article  Google Scholar 

  5. 5

    T. I. Mazilova and I. M. Mikhailovskii, Fiz Tverd Tela 37, 206 (1995).

    CAS  Google Scholar 

  6. 6

    A. Bourret and J. J. Bacmann, JIMIS-4, edited by Y. Ishida (Minakami, Japan, The Japan Institute of Metals), p. 125 ( 1986).

    Google Scholar 

  7. 7

    A. Bourret, J. Phys. France 51, 1 (1990).

    Article  Google Scholar 

  8. 8

    W. Krakow, Acta Metall. Mater. 38, 1031 (1990).

    CAS  Article  Google Scholar 

  9. 9

    W. Krakow, Philos. Mag. A 63, 2 (1991).

    Google Scholar 

  10. 10

    G. J. Wang, V. Vitek, I. Alber, J. L. Bassani and G. Tichy, in Intergranular and Interphase Boundaries in Materials: iib92, edited by P. Komninou and A. Rocher (Aedermannsdorf, Trans Tech Publications), p. 337 ( 1992).

    Google Scholar 

  11. 11

    C. Rottman, Scripta Metall. 23, 1037 (1989).

    Article  Google Scholar 

  12. 12

    M. W. Finnis and J. E. Sinclair, Philos. Mag. A 50, 45 (1984).

    Article  Google Scholar 

  13. 13

    G. J. Ackland and R. Thetford, Philos. Mag. A 56, 15 (1987).

    Article  Google Scholar 

  14. 14

    N. W. Ashcroft and N. D. Mermin, Solid State Physics, (Saunders College, Philadelphia, 1976).

    Google Scholar 

  15. 15

    F. W. DeWette, Surface Phonons, edited by W. Kress and F. W. DeWette (New York, Springer), Vol. 21, p. 67 ( 1991).

    Google Scholar 

  16. 16

    E. S. Alber, J. L. Bassani, V. Vitek and G. J. Wang, Modelling and Simulation in Mat. Sci. Eng. 2, 455 (1994).

    Article  Google Scholar 

  17. 17

    V. Vitek, G. J. Wang, E. S. Alber and J. L. Bassani, J. Phys. Chem. Sol. 55, 1147 (1994).

    CAS  Article  Google Scholar 

Download references

Author information



Corresponding author

Correspondence to Gui Jin Wang.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Wang, G.J., Vitck, V. Order-Disorder Transformations in the σ3 (111)/[110] Symmetrical Tilt Boundary in Tungsten. MRS Online Proceedings Library 398, 563–567 (1995). https://doi.org/10.1557/PROC-398-563

Download citation