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

doi:10.1007/s11837-017-2300-3

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

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-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 language	English (US)
Pages (from-to)	880-885
Number of pages	6
Journal	JOM
Volume	69
Issue number	5
DOIs	https://doi.org/10.1007/s11837-017-2300-3
State	Published - May 1 2017

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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

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.",

author = "Jiadong Gong and David Snyder and Thomas Kozmel and Chris Kern and Saal, {James E.} and Ida Berglund and Jason Sebastian and Gregory Olson",

note = "Funding Information: This material is based on work supported by the U.S. Department of Energy under Award DE-SC0009592. Publisher Copyright: {\textcopyright} 2017, The Minerals, Metals & Materials Society.",

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AU - Gong, Jiadong

AU - Snyder, David

AU - Kozmel, Thomas

AU - Kern, Chris

AU - Saal, James E.

AU - Berglund, Ida

AU - Sebastian, Jason

AU - Olson, Gregory

PY - 2017/5/1

Y1 - 2017/5/1

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AB - 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.

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

Abstract

ASJC Scopus subject areas

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