A potential function for aluminum was derived from phonon dispersion curves. The contribution arising from short-range multi-ion interactions was subtracted from the phonon data, and this markedly affected the short-range characteristics of the potential. The potential function was used for the calculation of the energies of intrinsic and extrinsic stacking faults. Certain multi-ion contributions to the energies were also evaluated. The calculation could not explain the experimentally observed difference between the values for intrinsic and extrinsic stacking faults, which was attributed here to the interpretation of loop annealing observations of such faults. A re-interpretation gave a value of approximately 120mJ/m2 for intrinsic and extrinsic faults.

Interatomic Pair Potential for Aluminium - Calculation of Stacking Fault Energy. R.H.Rautioaho: Physica Status Solidi B, 1982, 112[1], 83-9