Abstract
Single crystal (SX) superalloys have wide application in the high pressure turbine section of aero and industrial gas turbine engines due to the unique combination of properties and performance. Since introduction of single crystal casting technology, SX alloy development has generally focused on increased temperature capability, and major improvements in alloy performance have been associated with the introduction of new alloying elements, including rhenium (Re) and ruthenium (Ru). 3% Re-containing second generation alloys, such as CMSX-4, PWA 1484 and Rene’ N5 have seen the greatest market utilization and have become the benchmark alloys for comparing new alloy developments. However, Re and Ru are rare elements and have limited production/availability and commensurate high costs, which has resulted in significant escalation of SX alloy costs. Consequently, there has been much interest in the development of improved SX superalloys with no Re or lower Re content compared to second generation alloys. Cannon-Muskegon has developed two new SX superalloys: CMSX-7 alloy, which contains no Re, and low Re CMSX-8 alloy, as alternatives to first and second generation alloys for applications which require slightly lower temperature capability compared to CMSX-4 alloy. This paper details development and characterization of these new, proprietary SX alloys.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
