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The fast linear mufin-tin orbital coherent polenlial approximation method allied wilh density functional theory (LMTCXPA-DPT) is used IO calculate eleclronic structure and cohesive properties of NI-AI random alloys on an underlying FCC lattice in all concentration intervals. Binding CUN-oblained in the calculations are used in the Debyffirimeisen analysis to determine thermal properties and temperaturedependenl Connolly-Williams cluster interactions. The calculated lattice constants, bulk moduli, enlhalpies and free energies of formation are in good agreement with experimenr Ihe globally and locally relaxed cluster interactions are compared with lhe recults obtained from lhe total energy-band calculations for elements and ordered phases.

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