Boron in tungsten: electronic structure and ordering tendencies

In the framework of linear density functional theory, the conditions of formation of tungsten-boron interstitial solid solutions are studied. On the basis of the coherent-potential approximation, the ordering tendencies in tungsten-based solid solutions are considered and the possibility of formation of some type of ordering on the sublattice of the interstitial octahedral positions is demonstrated. The tendencies of the chemical bonding in the interstitial solid solution of boron in tungsten are discussed.