Lamellar orientations and growth directions of β dendrites in directionally solidified Ti-47Al-2Cr-2Nb alloy

► Lamellar orientations in Ti-47Al-2Cr-2Nb alloy vary with G and v. ► Growth direction is 〈2 2 1〉β at low G or v, while the direction tends to be 〈1 0 0〉β at high G or v. ► β phase is the primary solidification phase when G/v ratio is equal to or less than 4.8×108 K s m−2.