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- Title
ICME Design of a Castable, Creep-Resistant, Single-Crystal Turbine Alloy.
- Authors
Gong, Jiadong; Snyder, David; Kozmel, Thomas; Kern, Chris; Saal, James; Berglund, Ida; Sebastian, Jason; Olson, Gregory
- Abstract
To improve the efficiency of advanced power systems, integrated computational materials engineering (ICME) tools are being developed at QuesTek Innovations LLC for the design of high-performance alloys for gas turbine. In this article, we detail progress on the design of a low-Re, castable, creep-resistant, single-crystal Ni-based superalloy (QTSX). CALPHAD-based indicators for castability (liquid buoyancy) and creep resistance ( γ′ coarsening rate constant) were simultaneously employed to predict an optimum alloy composition. Component-level QTSX trail castings have been fabricated, and characterization of the castings has demonstrated freckle-free solidification and creep resistance comparable to CMSX4 and ReneN5, which validates this accelerated ICME approach.
- Subjects
GAS turbines -- Design &; construction; SINGLE crystals; CREEP (Materials); QUESTEK Innovations LLC; ELECTRIC power systems; SOLIDIFICATION
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2017, Vol 69, Issue 5, p880
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-017-2300-3