Simultaneously Enhancing the Ductility and Strength in a Hierarchical and Multiphase Nanolaminated TiZrAlV

High strength and ductility are the prerequisite for structural materials for wide applications. Here, a simultaneous enhancement of both the ductility and strength is reported in a hierarchical and multiphase nanolaminated (HMN) TiZrAlV prepared via thermomechanical processing treatments. An excellent combination of high ultimate tensile strength of sigma(b) 1550 MPa and good elongation to failure of epsilon(f) 8.0% is obtained in an appropriate HMN structure that consists of nanoscale alpha aEuro(3) martensites, submicroscale alpha plates, and large microscale primary alpha(p) grains, much better than that (sigma(b) 1440 MPa, epsilon(f) 3.6%) of its coarse-laminated counterpart without primary alpha(p) grains. The present study is significant for the enhancement of strength and ductility of engineering materials via the design of hierarchical-laminated structure.