双态组织 1. Fracture mechanics of tensile ductility of TiAl alloy with duplex structure; 双态组织TiAl基合金拉伸塑性的断裂力学 2. 8vol%TiB2 alloy with duplex structure consisting of primary equiaxed γ-grains and lamellar α2+γ colonies after creep deformation at elevated temperatures (650℃~750...