Wo. Soboyejo et al., INVESTIGATION OF THE EFFECTS OF MICROSTRUCTURE ON CREEP DEFORMATION IN ALPHA(2)-BASED TITANIUM ALUMINIDE INTERMETALLICS, Journal of Materials Science, 32(7), 1997, pp. 1877-1887
The results of a systematic investigation of the effects of microstruc
ture/substructure on the secondary creep behaviour of alpha(2)-based t
itanium aluminide alloys are presented. This includes a study of the e
ffects of heat treatment on the steady-state creep behaviour of alpha(
2) + beta-processed Ti-24Al-1 1Nb and Ti-25Al-1ON b-3V-1Mo at 540, 650
and 760 degrees C, and an investigation of the effects of creep defor
mation on dislocation substructures in Ti-24Al-11Nb. The parameters th
at control secondary creep deformation are identified for both alloys,
and the results are compared with data obtained for conventional high
-temperature near-alpha titanium alloys and beta-forged Ti-24Al-10Nb-3
V-1Mo.