The Influence of Heat Treatment on the Formation of the Structure and the Level of Mechanical Properties of High-Alloy Titanium Alloy

摘要

The paper investigates the possibility of increasing the strength of the experimental high-alloy titanium alloy by various methods of thermal action leading to a change in its phase composition and intragrain structure. Changes in mechanical properties in correlation with the change in structure in the annealed, tempered, and heat-hardened state are reviewed. It is shown that, by controlling phase transformations in high-alloy two-phase titanium alloys, it is possible to realize a high-strength state with satisfactory plastic characteristics. The optimal set of mechanical properties is provided by heat treatment leading to the creation of a two-phase heterogeneous structure with a developed bimodal intragrain structure.