The ternary alloy of Ni-28.5Al-43 V was prepared sucessfully by vacuum non-consumable arc melting.The microstructure and mechanical behavior of alloy solidified at various locations were investigated by using optical microscope（OM）

X-ray diffraction（XRD）as well as scanning electron microscope（SEM）.The results show that the solidified microstructure of the ternary alloy Ni-28.5Al-43 Vis mainly composed of the V primary phases and NiAl+V lamellar eutectic phase.Meanwhile

microhardness of the ternary alloy was measured.The results show that micro-hardness of the V primary phases reaches 398

4

25

which is three times of that of pure vanadium

which is attributed to the solid solution strengthening effects of V phase.Moreover

compressive strength at high temperature and ambient ductility toughness of the alloy are superior greatly to NiAl alloy

showing V additions remarkably improving the room-temperature plasticity and elevated temperature strength of the Ni-28.5Al-43 Valloy.