CCS and Power Systems

Advanced Energy Systems - Hydrogen Turbines

Microstructure Sensitive Crystal Viscoplasticity for Ni-Base Superalloys

Performer: Georgia Tech Research Corporation

Project No: FE0011722

Program Background and Project Benefits

This project will develop a microstructure-sensitive crystal viscoplasticity (CVP) model for single-crystal Ni-base superalloys targeted for use in the hot gas path sections of industrial gas turbines (IGT). Single crystal material models will allow for improved operational guidelines and improved component life that will lead to decreased maintenance costs and reduced costs of electricity. Specifically, this project will develop a microstructure-sensitive (CVP) model that accounts for precipitate morphology evolution that will be introduced through the coupling of coarsening kinetics and constitutive relations of the CVP model followed by conducting long-term creep-fatigue interaction studies on two single-crystal Ni-base superalloys with specific emphasis on the role of microstructure.

Project Details