Research Status of the Static and Dynamic Mechanical Behaviors ofNear-α Titanium Alloys

Author of the article:DU Licheng, YANG Haoxue, WU Yunjie, WANG Yi, WANG Jun, LI Jinshan

Author's Workplace：State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China

Key Words：near-α titanium alloys; alloy composition; texture; dynamic mechanical properties; adiabatic shear

Abstract：Near-α titanium alloys have excellent mechanical properties and high specific strength, exceptional creepproperties and fatigue resistance within a wide temperature range and are among the indispensable structural materials innumerous fields, such as aerospace, water conservancy, electric power, and metallurgy. Currently, with the continuousexploration of the aerospace field and extremely cold regions, the requirements for the performance of titanium alloystructural materials have become more stringent. Titanium alloys are not only required to possess relatively high staticmechanical properties but also place high demands on their dynamic mechanical properties to adapt to extremeenvironments. The composition of titanium alloys primarily determines their type and performance. Moreover, throughappropriate hot working, cold working, and heat treatment, their physical and mechanical properties can be furtherregulated. Therefore, this paper reviews the factors influencing the static and dynamic mechanical behavior of near-αtitanium alloys, discusses the effects of elemental composition and texture on the mechanical properties of near-α titaniumalloys, and summarizes the research status of the dynamic mechanical behavior of near-α titanium alloys under high strainrates.