Abstract
High efficiency in gas turbines requires increased gas temperatures. Gas temperatures above 1100 °C can only be handled using air-cooled structures to keep the metal temperatures below 1000 °C. Single-crystalline superalloys meet the requirements for creep strength and thermo-mechanical fatigue resistance. Single-crystalline superalloys are used for gas turbine blades. Modeling of deformation is a key issue in order to develop life prediction tools. In this study modeling of creep deformation and creep rupture as well as fatigue contribute to a description of the mechanical behavior of CMSX-4 at three different temperatures. Creep deformation was described by modified Garofalo equation and a Larson–Miller approach. Cyclic elastic–plastic deformation as well as fatigue life were described by a new engineering approach. Here the elastic–plastic deformation work was considered in order to determine a temperature-dependent master curve for fatigue behavior.
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.
