The application background of superalloys is rooted in the rapid development of the aerospace and energy industries since the mid-20th century. As jet engines and gas turbines pursue higher efficiency and greater thrust, the operating temperatures of their hot-section components must increase significantly, far exceeding the limits of ordinary steels and alloys. Superalloys emerged precisely in response to this extreme demand. Through complex alloying (typically nickel, cobalt, or iron-based, with the addition of over a dozen elements such as chromium, aluminum, titanium, and rhenium) and special processes (such as single-crystal casting), they achieve powerful comprehensive properties. They maintain high strength, excellent creep resistance, and fatigue resistance even at temperatures approaching their melting point (up to and above 1100°C) . Therefore, their core application scenarios are highly concentrated in these extreme "high-temperature and high-stress" environments, such as turbine blades, vanes, combustors in aero-engines, and turbine discs and blades in power generation gas turbines. These components must operate continuously for thousands or even tens of thousands of hours under stress at high rotational speeds, making the reliability of superalloys critically important.

Leveraging the high-temperature resistance characteristics of inorganic non-metallic materials, our department has established a full-process high-temperature and ultra-high-temperature extreme environment laboratory, fully capable of covering the testing environment for superalloys up to approximately 1100°C.