According to the different matrix, high-temperature alloys are divided into: iron-based high-temperature alloys, nickel-based high-temperature alloys and cobalt-based high-temperature alloys. Among them, nickel-based high-temperature alloys are referred to as nickel-based alloys.
The main characteristics of nickel-based high-temperature alloys include high strength and good oxidation resistance and gas corrosion resistance in the range of 650~1000℃. This type of alloy can be hot and cold deformed, with a wide operating temperature range from -253℃ to 1320℃, and has good mechanical properties and comprehensive strength and toughness indicators.
According to the main alloying elements and microstructures in the alloy, nickel-based high-temperature alloys can generally be classified into solid solution strengthening type and precipitation strengthening type. Solid solution strengthening alloys improve performance by adding elements such as chromium and tungsten, while precipitation strengthening alloys enhance material properties by forming precipitation phases.
