A nickel-based superalloy for additive manufacturing and its preparation method

By employing a compound printing powder technology involving sieving and independent degassing, the oxidation problem of nickel-based superalloy powders has been solved, enabling high-quality forming of components in additive manufacturing and improving the continuity of the microstructure and mechanical properties.

CN122099304BActive Publication Date: 2026-07-17JIANGSU VILORY ADVANCED MATERIALS TECH CO LTD +1
View PDF 4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU VILORY ADVANCED MATERIALS TECH CO LTD
Filing Date
2026-04-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

During additive manufacturing, nickel-based superalloy powder is prone to oxygen absorption and oxidation during powder preparation, sieving, transportation and storage, which affects the quality of fusion bonding and leads to a decrease in the continuity of component structure and mechanical properties.

Method used

The nickel-based high-temperature alloy powder is sieved into two types: bulk particle size and interstitial particle size, using a compound printing powder. After degassing in an independent vacuum environment, the powder is mixed in a certain proportion and then spread and melted layer by layer in a laser powder bed melting device, combined with preheating desorption, stress relief, solution treatment and aging treatment.

Benefits of technology

It improves the uniformity and continuity of powder, reduces the generation of large-size voids and cracks, ensures the surface smoothness and microstructure uniformity of components, and enhances mechanical properties and service stability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122099304B_ABST
    Figure CN122099304B_ABST
Patent Text Reader

Abstract

This invention discloses a nickel-based superalloy for additive manufacturing and its preparation method, relating to the field of nickel-based superalloy technology. By sieving atomized alloy powder into powders of a first and second particle sizes, and performing degassing treatment on each in a vacuum environment, the powders are then mixed to form a composite printing powder. The first particle size powder forms the main powder layer, while the second particle size powder fills the gaps between the first particle size powders. This makes it less likely for large voids and continuous original particle boundaries to appear during the layer-by-layer melting and forming process of the superalloy blank. The second particle size powder fills the gaps between the first particle size powders, ensuring that both types of powders achieve a surface state matching their respective particle sizes before mixing. This solves the problems of traditional technologies that only focus on composition design or post-forming heat treatment, while neglecting to control the powder's state before entering the molten pool and failing to consider differences in oxygen absorption and degassing between powders of different particle sizes.
Need to check novelty before this filing date? Find Prior Art