Superalloy is a kind of metal that works for a long time under the action of high temperature above 600℃ and certain and certain stress. The characteristics of superalloys that are different from traditional metals and alloys are: the alloys have high strength under high temperature working environment, good oxidation resistance and hot corrosion resistance, good fatigue properties, fracture toughness, and maintain good performance at various temperatures. comprehensive performance such as organizational stability and operational reliability.
Superalloys can be divided into iron-based superalloys, nickel-based superalloys and cobalt-based superalloys according to the types of matrix elements. Among them, nickel-based superalloys have relatively stronger heat resistance, so they are the most widely used and are widely used in today's production. The proportion is as high as 80%; according to the manufacturing process, it can be divided into deformed superalloy, cast superalloy and powder superalloy.
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