Additive Manufacturing Technologies of Nickel-based Superalloys and Their Application in Aerospace
Nickel-based superalloys are widely used in rocket engines,scramjet engines and other aerospace fields since excellent oxidation resistance and beneficial mechanical properties in high-temperature environment.Due to the advantage of near-net-shape forming,additive manufacturing technology can realize the fabrication of components with complex structures such as coolant channel and thin walls,which are difficult to process by conventional methods.The emergence of additive manufacturing technology has further boosted the application of nickel-based superalloys in the aerospace field.The GH4169/IN718 alloy,which is the most thoroughly researched the superalloys,is used to summarize the microstructure and mechanical property characteristics of the nickel-based superalloys manufactured by the additive manufacturing technology.In addition,recent applications of the superalloys manufactured by the additive manufacturing technology in the aerospace have been outlined.
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