Seeded growth of Ti-46Al-8Nb polysynthetically twinned crystals with an ultra-high elongation

Hao Jin^a^,^b, Qing Jia^a, Quangang Xian^a, Ronghua Liu^a, Yuyou Cui^a, Dongsheng Xu^a, Rui Yang^a^,^*(

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Fig. 4.. Optical microstructures of the Ti-46Al-8Nb PST crystals from a Ti-43Al-3Si seed at the growth rate of 10 mm/h, showing (a) the microstructure of the whole bar; (b) the magnified microstructure around the seed/main body interface; (c, d) the typical microstructure of the main body and (e) the dendrites morphology in the quench zone .