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Development of two rhenium- containing superalloys for single- crystal blade and directionally solidified vane applications in advanced turbine engines

  • K. Harris
  • G. L. Erickson
  • S. L. Sikkenga
  • W. D. Brentnall
  • J. M. Aurrecoechea
  • K. G. Kubarych
Technical Papers

Abstract

A team approach involving several turbine engine companies using the concepts of simultaneous engi-neering has been used to successfully develop CMSX-4 ® alloy for turbine blade applications. CMSX-4 al-loy is a second-generation, single-crystal cast nickel-base superalloy containing 3% Re and approximately 70% volume fraction of γ. The high level of balanced properties determined by labora-tory evaluation has been confirmed during field testing of the Solarγ Mars T-14000 industrial gas turbine with CMSX-4 single-crystal (SX) blades in both the coated and bare condition. A similar collaborative ap-proach has resulted in the successful development of CM 186 LCγ alloy for complex, directionally solidi-fied (DS) columnar grain vane segments. CM 186 LC alloy is a second-generation DS columnar grain cast nickel-base superalloy containing 3% Re and approximately 65% volume fraction of γ. Excellent com-ponent producibility and quality is demonstrated. Turbine engine testing is scheduled to commence by the end of 1993.

Keywords

cast superalloys directionally solidified columnar grain rhenium single-crystal blade 

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Copyright information

© ASM International 1993

Authors and Affiliations

  • K. Harris
    • 1
  • G. L. Erickson
    • 1
  • S. L. Sikkenga
    • 1
  • W. D. Brentnall
    • 2
  • J. M. Aurrecoechea
    • 2
  • K. G. Kubarych
    • 2
  1. 1.Cannon-Muskegon CorporationMuskegonUSA
  2. 2.Solarγ Turbines, Inc.San DiegoUSA

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