About this Abstract |
Meeting |
Superalloys 2024
|
Symposium
|
Superalloys 2024
|
Presentation Title |
A-10: Microstructural and Thermomechanical Assessment of Computationally Designed Ni-based SX Superalloys |
Author(s) |
Abel Rapetti, Alice Cervellon, Edern Menou, Jérémy Rame, Franck Tancret, Jonathan Cormier, Paraskevas Kontis |
On-Site Speaker (Planned) |
Abel Rapetti |
Abstract Scope |
Five computationally designed single crystal superalloys have been developed for aircraft engine airfoils submitted to high temperatures. The broad steps of the alloy design procedure are presented in this study. Tensile and creep properties of these SX superalloys are evaluated in regard to the predictions of the creep-life model and/or in regard with reference SX superalloys. Effective and predicted density show a good consistence. The ã' phase fraction predicted by CALPHAD calculations at the design stage and the ones evaluated in this work are consistent as well. For AMSP2 alloy, atom probe tomography measurements were conducted. We observe that excessive additions of rhenium to a platinum containing SX superalloy have a strong impact on creep properties, reducing the creep lifetime compared to the reference alloy TROPEA, and strongly affect the ã/ã' coherency, leading to the absence of rafting at intermediate temperatures (950 °C – 1050 °C). |
Proceedings Inclusion? |
Definite: At-meeting proceedings |