Abstract
The microstructures and mechanical properties of Ti-35Nb-2Ta-3Zr alloy, which was fabricated by vacuum consumable arc melting furnace followed by hot pressing, subjected to cross-rolling were investigated in this study. Shear slip and stress-induced α″ martensite phase transformation play an important role in the plastic deformation. Hundred nanometers-sized grains are obtained, when the alloy is cross-rolled at a reduction ratio of 99%. The cross-rolled alloy exhibits considerable low Young’s modulus (around 48 GPa) and high ultimate tensile strength (around 880 MPa) accompanying with ductile fracture. For Ti-35Nb-2Ta-3Zr alloy cross-rolled at a reduction ratio of 60%, excellent isotropy of mechanical properties along different directions of specimens are obtained.
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