Electron microscope investigation of microstructure in V-Al system alloys

Various methods of structural analysis were used to investigate quenched V-Al alloys which showed anomalous concentration and temperature dependences of electric conductivity. Two kinds of unstable lattice state connected with transition to V3Al and VAl phases are revealed at electron images. Metallographic study shows a network of some phase precipitations; it is likely that this explains normal concentration dependences of magnetic susceptibility and superconducting transition temperature for these alloys