The room- and high-temperature strength of Nb-Mo-Pi ternary alloys consisti
ng of a bcc solid solution were studied by compression tests up to 1873 K.
It is found that the compressive strength increases with Mo and W additions
due to solid solution strengthening, and the effect of the strengthening i
s retained to very higher temperature. On the other hand, the compressive d
uctility decreases with increasing Mo+W content. Alloys with Mo+W content l
ess than 25 mol% possess both high temperature compressive strength and lar
ge room temperature ductility.