The present paper discusses several modern wrought superalloys that are being used for various hot gas path components in modern gas turbines. HAYNES® 230™ alloy (Ni-22Cr-14W-2Mo) is used for combustors and transition pieces to replace an old combustor alloy, HASTELLOY® X alloy (Ni-22Cr-19Fe-9Mo), because of higher creep-rupture strength, better oxidation resistance, higher low-cycle fatigue resistance, and other improved properties. The alumina forming HAYNES 214™ alloy (Ni-16Cr-3Fe-4.5Al-Y) replaces HASTELLOY X for honeycomb seals because of its superior oxidation resistance. HAYNES 242™ alloy (Ni-8Cr-25Mo), strengthened by a long-range ordered phase Ni2(Cr,Mo) with low thermal expansion and high strength, is used for turbine casings and seal rings. A less expensive, nitride-strengthened Fe-Ni-Cr alloy, HAYNES HR-120™ alloy, offers an attractive upgrade to many stainless steels and some Ni-base alloys for less demanding, hot section components.
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ASME 1996 Turbo Asia Conference
November 5–7, 1996
Jakarta, Indonesia
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7877-4
PROCEEDINGS PAPER
Several Modern Wrought Superalloys for Gas Turbine Applications
George Y. Lai
George Y. Lai
Haynes International, Inc., Kokomo, IN
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George Y. Lai
Haynes International, Inc., Kokomo, IN
Paper No:
96-TA-030, V001T07A001; 8 pages
Published Online:
January 27, 2015
Citation
Lai, GY. "Several Modern Wrought Superalloys for Gas Turbine Applications." Proceedings of the ASME 1996 Turbo Asia Conference. ASME 1996 Turbo Asia Conference. Jakarta, Indonesia. November 5–7, 1996. V001T07A001. ASME. https://doi.org/10.1115/96-TA-030
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