Titanium-Aluminide Fasteners in Hypersonic Flight: Weight vs. Creep Performance
The advancement of hypersonic flight, defined by speeds exceeding Mach 5, represents one of the most significant engineering challenges of the 21st century. As vehicles traverse the atmosphere at these velocities, they encounter extreme aerothermodynamic environments where surface temperatures can easily surpass 800 degrees Celsius. In this thermal regime, traditional aerospace materials, such as conventional titanium alloys or aluminum, lose their structural integrity. Historically, engineers have turned to nickel-based superalloys to maintain strength at high temperatures. However, the high density of nickel-based alloys imposes a significant weight penalty, which is [...]