Fatigue properties of austenitic stainless steel for the application in concentrated solar power plants
Fatigue properties of austenitic stainless steel for the application in concentrated solar power plants
Tuesday, September 13, 2022: 8:40 AM
Convention Center: 272 (Ernest N. Morial Convention Center)
The demand for increased use of alternative energy sources has driven the development of concentrated solar power (CSP) plants. CSP plants in combination with thermal energy storage (TES) technology, enable the dispatchable generation of electricity. In the direct storage configuration, the molten salt acts as heat transfer medium and storage medium operating at temperatures up to 565 °C.
The structural materials for tubes and container walls in contact with Solar Salt must meet a wide range of requirements in terms of the manufacturability, the mechanical properties, and corrosion resistance. Austenitic stainless steels are used as structural material for tubes and containers.
This work focuses on the fatigue aspect of bending of the structural material, which involves careful material selection and microstructural design.
However, the overall performance of austenitic stainless steel (Fe-0.06wt%C-21wt%Ni-25wt%Cr-1.2wt%Mn-0.4wt%Si-0.4wt%Nb-0.2wt%N) as a function of different grain sizes and grain boundary characters has not yet been clarified. Therefore, the results of fatigue tests enable the sustainable microstructural design of structural materials for concentrated solar power plants.
The structural materials for tubes and container walls in contact with Solar Salt must meet a wide range of requirements in terms of the manufacturability, the mechanical properties, and corrosion resistance. Austenitic stainless steels are used as structural material for tubes and containers.
This work focuses on the fatigue aspect of bending of the structural material, which involves careful material selection and microstructural design.
However, the overall performance of austenitic stainless steel (Fe-0.06wt%C-21wt%Ni-25wt%Cr-1.2wt%Mn-0.4wt%Si-0.4wt%Nb-0.2wt%N) as a function of different grain sizes and grain boundary characters has not yet been clarified. Therefore, the results of fatigue tests enable the sustainable microstructural design of structural materials for concentrated solar power plants.