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.
Original language | English (US) |
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Pages (from-to) | 880-885 |
Number of pages | 6 |
Journal | JOM |
Volume | 69 |
Issue number | 5 |
DOIs | |
State | Published - May 1 2017 |
ASJC Scopus subject areas
- Materials Science(all)
- Engineering(all)