High-throughput mapping method for mechanical properties, oxidation resistance, and phase stability in Ni-based superalloys using composition-graded unidirectional solidified alloys

doi:10.1016/j.scriptamat.2020.10.043

Scripta Materialia

Volume 193, 1 March 2021, Pages 91-96

https://doi.org/10.1016/j.scriptamat.2020.10.043 Get rights and content

Abstract

We propose a new approach for the high-throughput experimental evaluation of the phase stability, mechanical and oxidation properties of a Ni-based superalloy. The Bridgman method is used to introduce the gradation of nine elements in a long distance (∼24 mm) and a wide range of microstructural features with η, μ and γ’ phase volume fractions in one sample. Nanoindentation and microstructural observations are utilized to extract the elastic modulus/hardness of a γ-γ’ two-phase structure and evaluate the oxidation layers in an oxidized sample. Our approach makes it possible to obtain huge number of datasets linked to the composition and microstructure of the superalloys.

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Declaration of Competing Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Acknowledgment

The authors appreciate Mr. Takuma Kohata for their assistance on microstructure observations.

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High-throughput mapping method for mechanical properties, oxidation resistance, and phase stability in Ni-based superalloys using composition-graded unidirectional solidified alloys

Abstract

Section snippets

Declaration of Competing Interest

Acknowledgment

Acta Mater.

Int. J. Plast.

Acta Mater.

Procedia Struct. Integr.

Mater. Sci. Eng.

Scr. Mater.

Scr. Mater.

Acta Mater.

J. Mech. Phys. Solids

J. Phys. Chem. Solids

Nat. Mater.

J. Res. Natl. Inst. Stand. Technol.