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

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 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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