Microstructural evolution and stability of (Fe1−xVx)3Al alloys in relation to the electronic structure

The evolution of the microstructure of (Fe1−xVx)3Al alloys in the D03 structure has been studied as function of composition by transmission electron microscopy. The domain size of the D03 structure significantly increases as V is added to the alloy. An increase in long range order parameter is also shown. This microstructural evolution is discussed in terms of the increased second nearest neighbor interactions induced by the V additions. …