Microstructures and deformation behaviour in Nb/10–25at.% Al/20–40at.%V alloys

Ignition and reaction mechanism of Co–Al and Nb–Al intermetallic compounds prepared by combustion synthesis

“…NbAl 3 has a potential application as turbine blade material in aircraft engines and stationary gas turbine [15], thanks to its relatively low density (4.54 g/cm 3 ) and very good resistance to oxidation processes. Nb 3 Al shows superconducting properties and has broad potential for alloying with transition metals as V, providing an opportunity for significant improvements of mechanical properties of Nb 3 Al-based alloys [16].…”

The microstructural evolution of NbAlV ternary alloys

“…In a previous paper [11], it was found that the A15 phase is rich in Al and lean in V compared with the B2 phase and that the volume fractions of the B2 and A15 phases vary linearly with the Al/V ratio. However, from the isothermal phase diagrams determined in this study, there is no obvious linear relationship between the volume fractions of B2 or A15 and the Al/V ratio.…”

“…Buttons with compositions in the range Nb- (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) Al-(10-20)V (atomic percent) were prepared in a Retech transferred-arc plasma melter on a water-cooled hearth under a positive pressure of Ar. The buttons were remelted five times for homogeneity.…”

“…The B2 phase will transform to disordered A2 phase. The B2 to A2 transformation temperature has been determined to be in the range 1323 to 1473 K for a 25/40 alloy [11].…”

“…To increase high temperature strength without lowering fracture toughness at ambient temperatures, ternary additions have been investigated. Among these, Nb-Al-V alloys show extensive room temperature compression ductility and excellent high temperature strength [11][12][13]. However, reports on the Nb-Al-V system are very limited in number.…”