Definition of superalloy in US English:



  • An alloy capable of withstanding high temperatures, high stresses, and often highly oxidizing atmospheres.

    • ‘While others in the market readily acknowledged that demand from the stainless steel sector is slack, order books for nickel-bearing engineering steel and superalloys are strong, they said.’
    • ‘Investment cast structural components are produced in a wide range of air-melted steels, cobalt alloys and vacuum cast nickel-based superalloys.’
    • ‘Nickel is also used to make superalloys, alloys made primarily of iron, cobalt, or nickel.’
    • ‘Another 20 to 25% is used as alloy additions in nickel-base superalloys and heat-resisting steels.’
    • ‘A distinction is usually made between those alloys that are primarily used for high-temperature strength, commonly referred to as superalloys, and those that are primarily used for corrosion resistance.’
    • ‘The backlash could be harsh if that happens, some warned, because, despite the market's current weakness, underlying demand - particularly in the superalloys sector - is firm.’
    • ‘It uses neural network modelling to predict the impact very expensive additives such as rhenium and platinum might have on the heat resistance of superalloys.’
    • ‘About three-quarters of all rhenium consumed in the United States is used in the manufacture of superalloys - alloys containing iron, cobalt, or nickel.’
    • ‘The barrier coating can be disposed between a metal substrate (e.g., a superalloy) and an oxidation-resistant coating, preventing the substantial diffusion of various elements at elevated service temperatures.’
    • ‘Look at detector materials - the first medical X-ray tube - or superalloys or advanced ceramics or thermal barrier coatings that make it possible to run aircraft engines and power systems at higher temperatures and higher efficiencies.’
    • ‘About 65% of the cobalt used in the United States is used to make alloys, primarily superalloys.’
    • ‘The majority of the nickel-base superalloys utilize the combined strengthening of a solution-hardened austenite matrix with’ precipitation.’
    • ‘The effect on microstructure is not nearly so clear in other cases where a well defined substructure is produced, e.g. Al-Mg alloys, ferritic Fe-Si, Fe-Cr and Fe-Ni alloys, austenitic stainless steels, and nickel superalloys.’
    • ‘Cr compounds are used industrially as catalysts, corrosion inhibitors and as an alloying metal in making stainless steel and various superalloys.’
    • ‘Advanced materials (ceramics, superalloys, etc.) provide greater strength and temperature resistance.’