Characterization of microstructures and age hardening of Fe 1-2xAlxVx alloys
- Ferreirós, Pedro Antonio
- Alonso, Paula Regina
- Gargano, Pablo Hugo
- Bozzano, Patricia Beatriz
- Troiani, Horacio Esteban
- Baruj, Alberto Leonardo
- Rubiolo, Gerardo Hector
DOIAbstract
The Fe-rich corner of the Fe-Al-V system has shown phase separation into disordered A2 and ordered L21 phases. In a former work we model this ordering reaction by using ab-initio thermodynamics. The approach is now employed to suggest the Fe1-2xAlxVx alloys in order to reduce the Al content by increasing the addition of vanadium looking for a better ductility of the solid solution which can be afterwards strengthened by coherent L21 precipitates. Four alloys with compositions in the range 0.08 < X < 0.15 were studied. The phase transition temperatures and microstructures of the alloys were characterized by differential scanning calorimetry (DSC) and transmission electron microscopy (TEM), respectively. The region (A2 + L21) occurs for 0.10 ...