Structural and phase states on concentrated solid solution of the V – Nb – Ta – Ti system irradiated by krypton ions

Abstract

The results of the effect of irradiation at room temperature by low-energy krypton ions with an energy of 280 keV and a fluence of 5 ⋅ 1015 cm–2 on the structural-phase state of multicomponent solid solutions based on the V – Nb – Ta – Ti system are presented. By scanning electron microscopy and X-ray diffraction analysis, it was found that the formed binary, triple and quadruple alloys of the V – Nb – Ta – Ti system are equiatomic single-phase solid solutions, have a homogeneous distribution of elements in the near-surface layer and have compressive micro- and macrostresses calculated by Halder – Wagner and sin2 ψ methods. The conducted studies have shown that no significant changes in the structural-phase state were detected when the alloys of the V – Nb – Ta – Ti system were irradiated by krypton ions. There is no decay of the solid solution and disturbance of the equiatomic and uniformity of the distribution of elements in the near-surface layer. Irradiation by krypton ions leads to a change in the level of micro- and macrostresses for all alloys of the V – Nb – Ta – Ti system.