Patent · US Active

Nickel-based superalloy formed by selective laser melting and preparation method thereof

US12186803B2 · kind B2 · utility

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5Claims

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Assignee

Northwestern Polytechnical University · CN

Inventors

Haijun Su · Xi'an, CN
Yong Zhao · Beijing, CN
Meng Wang · Shanghai, CN
Jun Zhang · Beijing, CN
Min Guo · Fremont, US
Lin Liu · Gainesville, US
Hengzhi Fu · Tuji, CN

Key dates

Filing date	Mar 3, 2022
Grant date	Jan 7, 2025
Priority date	—
Expiry date	Oct 31, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Disclosed are a nickel-based superalloy formed by selective laser melting and a preparation method thereof. In the method, CrFeNb alloy powder is used as a grain refiner, and its element composition is within the composition range of a nickel-based superalloy powder to ensure that the prepared nickel-based superalloy has the same element composition with the original alloy; the grain size in the nickel-based superalloy could be refined by the addition of CrFeNb alloy powder, such that the anisotropic columnar grain structure in the alloy is transformed to equiaxed grain structure, thereby improving mechanical properties of the alloy.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.