Investigation of the Deformation Behavior of Annealed Titanium Alloy VT16 Under Compression

The effect of crystallographic texture and deformation rate on the deformation behavior of titanium alloy VT16 after annealing at 700 – 880°C is studied. The compressive tests are performed at deformation rates 1, 10, 100, and 1000 mm/min. The stress-strain curves are plotted. The ultimate strain is determined. The microstructure of the alloy and its texture are studied using pole figures (PF) and orientation distribution functions (ODF). It is shown that the presence of an α-phase with axial texture 101¯0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \left\langle 10\overline{1}0\right\rangle $$\end{document} lowers the yield strength and the flow stress of the alloy in the hardening range and the peripheral tensile stresses of the free surface of the compressed specimens, which raises the deformability of the alloy under compression. Elevation of the temperature of the specimens with growth of the deformation rate lowers the yield stress of the alloy, which also improves the deformability of the alloy under compression.