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Intermetallic compounds for high-temperature structural use.

A I Taub, R L Fleischer

    Science (New York, N.Y.)
    |February 3, 1989
    PubMed
    Summary
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    High-temperature intermetallic compounds are needed for advanced turbines and engines. Researchers screened these materials based on melting temperature and density to identify promising candidates for further study.

    Area of Science:

    • Materials Science
    • Metallurgy
    • Engineering

    Background:

    • Next-generation turbines and engines require materials capable of withstanding extreme operating temperatures nearing 2000°C.
    • Intermetallic compounds offer high melting temperatures suitable for these demanding applications.
    • A significant challenge for intermetallic compounds is their inherent limited ductility.

    Purpose of the Study:

    • To survey the effects of chemistry and crystal structure on intermetallic compounds.
    • To identify promising intermetallic compound candidates for high-temperature applications.
    • To overcome the ductility limitations of intermetallic compounds for advanced engineering.

    Main Methods:

    • Conducted a survey of intermetallic compounds.

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  • Evaluated materials based on melting temperature and density as key performance indicators.
  • Utilized figures of merit for preliminary screening of candidate materials.

    • Main Results:

    • Identified potential intermetallic compound candidates for high-temperature applications.
    • Established melting temperature and density as effective metrics for material selection.
    • Laid the groundwork for further investigation into overcoming ductility limitations.

    Conclusions:

    • Melting temperature and density are crucial parameters for selecting intermetallic compounds for extreme environments.
    • Further research is needed to address the ductility of identified candidate materials.
    • The study provides a foundation for developing advanced materials for efficient turbines and engines.