What is superalloy?
What is superalloy?
High-temperature alloy refers to a class of metal materials based on iron, nickel and cobalt that can work for a long time under high temperature above 600 ℃ and certain stress;
And has a high temperature strength, good oxidation and corrosion resistance, good fatigue performance, fracture toughness and other comprehensive properties.
The superalloy is a single austenite structure, which has good structural stability and reliability at various temperatures.
Based on the above performance characteristics, and the high degree of alloying of high-temperature alloys, it is also called "superalloy" and is an important material widely used in aviation, aerospace, petroleum, chemical industry, and ships. According to the matrix element, superalloys are divided into iron-based, nickel-based, cobalt-based and other superalloys (inconel / monel / hastelloy / nitronic-60 etc).
The service temperature of iron-based superalloys can generally only reach 750 ~ 780 ℃. For heat-resistant parts used at higher temperatures, nickel-based and refractory metal-based alloys are used. Nickel-based superalloy occupies a particularly important position in the entire superalloy field. It is widely used to manufacture the hottest end parts of aviation jet engines and various industrial gas turbines.
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