Effects of cold-rolling deformation on texture evolution and mechanical properties of Ti-29Nb-9Ta-10Zr alloy

摘要

The crystallographic texture of Ti-29Nb-9Ta-10Zr alloy is studied after cold-rolling with different amounts of thickness reduction, up to 60%. The major texture components developed during cold-rolling were: γ-fibre components: {111}<110>, {111}<011>, {111}<121> and {111}<112>; texture component: {112}<111> and texture components: {001}<010> and {010}<001>. Besides crystallographic texture the resulted mechanical properties were studied by nanoindentation. It was showed that the decrease in Young's modulus after different cold-rolling stages is mainly attributed to the stress-induced α"-Ti phase formation. At 60% cold-rolling thickness reduction obtained an elastic modulus close to 45.29 ± 3.81 GPa, coupled with an average Vickers microhardness close to 279.83 + 4.28 HV.