Evolution of nanoporosity, Young's modulus and microplastic properties of nanostructured titanium VT1-0 during creep

This study investigates the evolution of nanoporosity, Young’s modulus, and microplastic properties in nanostructured (NS) titanium VT1-0 during creep. The NS titanium was fabricated using a combination of transverse screw rolling and longitudinal bar rolling, with additional nitrogen cooling applied during the final deformation stage. For the first time, the changes in elastic and microplastic properties of NS VT1-0 titanium under tensile creep conditions were examined through creep lifetime testing. The dependence of density reduction (nanopore formation) on the degree of deformation was determined. The results contribute to understanding the damage evolution and mechanical behavior of nanostructured titanium under creep deformation.