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Abstract. The self-consistent band structure calculations of the ordered and disordered intermetallic titaniumbased alloys were performed using full-potential linearized augmented plane wave (FLAPW) method and Korringa-Khon-Rostoker -coherent potential approximation (KKR-CPA) The electronic structure of the (001) surfaces are also calculated. The alteration of the electronic properties in the three TiMe series (Me=Fe, Co. Ni. Ru, Rli, Pd, Os, Ir, Pt) are discussed in the dependence of a number of valence electrons. The changes of the electronic structure during martensitic transformation, with disordering and alloying are analyzed. The calculated emission, absorption, electron energy loss spectra and optical properties are found to be in good agreement with experiment.

The electronic structure of the ͑001͒ and ͑110͒ surfaces for B2 Ti-based transition metal alloys were investigated using the full-potential linearized augmented plane-wave method in the local-density approximation. The evolution of the electronic structure of alloys at the different surfaces in comparison with the bulk ground states is analyzed. The ferromagnetic order is displayed in the case of Fe or Co top layer for the ͑001͒ surface. The surface magnetic moment of Fe and Co (2.27 B and 0.87 B ) reduces drastically inside the film. The influence of a surface on the electron properties of alloys is discussed.

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