Titanium Alloys Processing and Propertie

This invited review paper provides a comprehensive historical appraisal of titanium alloys in engineering applications, particularly in the aerospace sector, addressing their processing and properties. The objective is to evaluate the current status and future perspectives of titanium alloys, with an emphasis on their practicality in high-performance gas turbines and rocket engines. Methodologically, the paper incorporates a review of various processing techniques, including traditional melt/cast and wrought technologies, super plastic forming, and additive manufacturing. It classifies titanium alloys into five major groups based on their allotropic phases (α and β) and discusses the potential of intermetallic titanium systems, which may replace heavier nickel-based components despite concerns about ductility at room temperature. The results highlight that titanium, often perceived as a costly material, offers significant benefits in terms of fatigue strength, corrosion resistance, and weight savings. The paper serves as a seminal literature review, summarizing advancements in titanium alloy technology while addressing concerns regarding the economic factors influencing material selection. This work complements additional studies focused on related properties and applications, emphasizing the relevance of titanium beyond aerospace uses.