The alloying effect on the high temperature deformation of Laves phase NbCr2 intermetallic compound

The effect of ternary alloying elements (such as V, Mo and W) on high temperature deformation of the C15 NbCr2 was investigated by compression test and transmission electron microscopy. The addition of Mo to C15 NbCr2 resulted in a marked decrease in the 0.2% yield stress and also BDTT. The addition of V resulted in a slight increase in the 0.2% yield stress and almost the same BDTT as that in the unalloyed C15 NbCr2. The addition of W to the C15 NbCr2 resulted in a marked increase in the 0.2% yield stress and also BDTT. The high temperature deformation of the ternary C15 NbCr2 alloys was discussed on the basis of the easiness of the activation of the dislocations and the counteracting solid solution hardening by the ternary element.