Microstructural control through seeding and directional solidification of TiAl alloys containing Mo and C

Directional solidification of Ti-45Al-8Nb-(W,B,Y) alloy

“…PST crystal growth with high Nb containing TiAl alloy is different from that with other TiAl-based alloys reported by Johnson [11], Lee [12], Kim [13], and so on. Most of them achieved preferred lamellar orientation by controlling the primary solidification α-(Ti) phase or by means of a seeding technique.…”

The effect of microstructure on the creep behavior of the Ti–46Al–1Mo–0.2Si alloy

“…3. The origin of such microstructure has been attributed to the segregation of Al during the peritectic solidification [34][35][36]. The as-cast material exhibited significant variations in the Al and Mo content.…”

Microstructure selection during the directionally peritectic solidification of Ti–Al binary system

“…Recent research about PST crystals of TiAl alloys suggested that the mechanical properties of TiAl alloys with the lamellar microstructure are extremely anisotropic with respect to the lamellar orientation. Many researchers paid more attention to controlling the lamellar orientation of g-TiAl alloys to improve the mechanical properties by directional solidification [1,2]. Generally, there are two main methods to control the lamellar orientation during directional solidification, namely seeding and alloying.…”