Effect of Solution Treatment on Microstructure, Texture, and Anisotropy of Mechanical Properties in TA10 (Ti-0.3Mo-0.8Ni) Sheet

Abstract

This study investigates the influence of varying solution temperatures on the microstructure, texture, and anisotropic behavior of mechanical properties in TA10 (Ti-0.3Mo-0.8Ni). Solution treatment gradually transforms the microstructure of the titanium alloy plate from an elongated α phase to a nearly equiaxial phase and subsequently to a Widmanstatten microstructure. Concurrently, the texture intensity and type undergo significant alterations. The anisotropy of mechanical properties in the plate with a T-type texture ({0001}⊥ND) is notably higher than that in the plate with a nearly B-type texture ({0001}//ND), owing to differing slip system initiation difficulties. In particular, the anisotropy of the titanium alloy plate is not solely dependent on texture intensity and is also intricately linked to the texture type and distribution. Specifically, the prismatic texture {10 \(\overline{1 }\) 0} < 11 \(\overline{2 }\) 0 > plays a central role in influencing tensile strength and yield strength anisotropy, while the directionality of the α phase primarily contributes to elongation anisotropy.

Graphical Abstract