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

11 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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