|About this Abstract
|7th World Congress on Integrated Computational Materials Engineering (ICME 2023)
|ExtremeMat: Quantification of the Effect of Microstructure and Composition on the Creep Rupture Life of Steels
|Laurent Capolungo, Arul Kumar, Ricardo Lebensohn, Andrea Rovinelli, Paul Christodoulou, Yuki Yamamoto
|On-Site Speaker (Planned)
Structural steels utilized for power generation applications are subjected to complex loading conditions (e.g. stresses, temperatures). A robust knowledge of the evolution of the performance steels, both austenitic and ferritic, with service conditions relies on the degree to which one can establish firm bridges between the microstructure, composition and material performance: such is one of the primary goals of the consortium ExtremeMat.
To quantify the impact of microstructure on the material creep rupture life, we introduce a new spectral based model predicting the primary, secondary and tertiary creep response of ferritic and austenitic steels.
The framework is found to satisfactorily predict the effects of temperature and stress on the creep rupture life rupture of 347H (austenitic) and Gr91 (ferritic) steels. Finally, leveraging the numerical efficiency of the EVPFFT platform the roles of initial dislocation and precipitate content on the creep rupture life of the material is studied.