Multiaxial plane-strain forging and rolling of biomedical grade titanium: Evolution of microstructure, texture, and mechanical properties

摘要

Multiaxial plane-strain forging and rolling were imparted to biomedical grade titanium polycrystal billets up to epsilon(effiective) approximate to 5.0 at ambient conditions. Equiaxed nanostructure, optimized dislocation substructure, and prismatic fiber texture were obtained. The material showed significant enhancement in ambient strength to similar to 1.1GPa, epsilon(fracture) approximate to 0.36, and toughness approximate to 279J/m(2). A high strain-hardening exponent (n = 0.17) and anisotropy ((r) over bar = 1.56, Delta r = 0.09) acquired indicate high formability and deep-drawing ability. (C) 2021 Elsevier B.V. All rights reserved.