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

Abstract

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}〈 〉, {111}〈 〉, {111}〈 〉 and {111}〈 〉; texture component: {112}〈 〉 and texture components: {001}〈 〉 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.A similar evolution was obtained also in the case of Vickers microhardness (Fig. 9c), showing close microhardness values in comparison with HIT values (Fig. 9b).

Effects of Solution Treating on Microstructural and Mechanical Properties of a Heavily Deformed New Biocompatible Ti–Nb–Zr–Fe Alloy

“…For this processing stage the cold rolling deformation degrees, as well as the parameters for heat treatment were established based on the authors' previous results [21].…”

A Study of Low Young’s Modulus Ti–15Ta–15Nb Alloy Using TEM Analysis

“…It is well known that Ti-based alloys may produce a different Young’s modulus depending on their constituent phases. On the basis of previous studies, the formation of the martensite phase can be designed as an α′ phase belonging to the HCP structural class, with a = 0.295 nm and c = 0.468 nm [ 26 ], or an α″ phase as an orthorhombic structure, with a = 0.301–0.352 nm, b = 0.473–0.498 nm, and c = 0.453–0.496 nm [ 27 , 28 , 29 ]. Knowles and Smith and Qiu et al [ 26 , 30 ] claimed that two morphologies of α′ martensite occurred: platelike martensite with parallel interfaces (Type I) and platelike martensite with a zig-zag twinning interface.…”

Microstructure, Texture Evolution and Mechanical Properties of VT3-1 Titanium Alloy Processed by Multi-Pass Drawing and Subsequent Isothermal Annealing

“…So, in principle, thermo-mechanical processing routes determine the types of texture components together with the microstructures. Although a series of systematical studies have been performed on the texture of titanium alloys in the process of deformation and post-deformation heat treatment [19][20][21][22][23][24][25], limited literature is available on texture evolution of VT3-1 titanium alloys fabricated by multi-pass warm drawing and subsequent isothermal annealing. To achieve the desired mechanical properties of bar materials, a comprehensive understanding of the relationship between microstructure, texture, and mechanical properties during drawing and subsequent heat treatment is needed.…”