ICME Design of a Castable, Creep-Resistant, Single-Crystal Turbine Alloy

Jiadong Gong*, David Snyder, Thomas Kozmel, Chris Kern, James E. Saal, Ida Berglund, Jason Sebastian, Gregory Olson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

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 languageEnglish (US)
Pages (from-to)880-885
Number of pages6
JournalJOM
Volume69
Issue number5
DOIs
StatePublished - May 1 2017

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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