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Intermetallic alloys based on gamma titanium aluminide

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Abstract

Titanium-aluminide alloys based on TiAl have an excellent potential to become one of the most important aerospace materials because of their low density, high melting temperature, good elevated-temperature strength and modulus retention, high resistance to oxidation and hydrogen absorption, and excellent creep properties. The chief roadblock to their application is poor ductility at low to intermediate temperatures that results in low fracture toughness and a fast fatigue-crack growth rate. During the last several years, a great deal of effort has been made to improve these ductile properties. These endeavors have met with some success through chemistry modification and microstructure control.

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Authors and Affiliations

  1. Metcut-Materials Research Group, Wright-Patterson Air Force Base, Dayton, Ohio, USA

    Young-Won Kim Ph.D. (principal investigator and group manager, adjunct professor, member of TMS)

  2. University of Dayton, Dayton, Ohio, USA

    Young-Won Kim Ph.D. (principal investigator and group manager, adjunct professor, member of TMS)

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  1. Young-Won Kim Ph.D.
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Kim, YW. Intermetallic alloys based on gamma titanium aluminide. JOM 41, 24–30 (1989). https://doi.org/10.1007/BF03220267

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