WO2025210613 - HIGH STRENGTH ALUMINUM ALLOY FOR ADDITIVE MANUFACTURING BY LASER POWDER BED FUSION (LPBF)
National phase entry is expected:
Publication Number
WO/2025/210613
Publication Date
09.10.2025
International Application No.
PCT/IB2025/053670
International Filing Date
07.04.2025
Title **
[English]
HIGH STRENGTH ALUMINUM ALLOY FOR ADDITIVE MANUFACTURING BY LASER POWDER BED FUSION (LPBF)
[French]
ALLIAGE D'ALUMINIUM À HAUTE RÉSISTANCE POUR FABRICATION ADDITIVE PAR FUSION LASER SUR LIT DE POUDRE (LPBF)
Applicants **
EATON INTELLIGENT POWER LIMITED
INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
Inventors
DEO, Nikhil
PRABHU, Nithyanand
PANDE, Manish Marotrao
JOHNSON, Eric Matthew
Priority Data
202411028122
05.04.2024
IN
Application details
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2394 | |
| EPO | Filing, Examination, Granting | 13054 | |
| Japan | Filing, Examination, Granting | 2431 | |
| South Korea | Filing, Examination, Granting | 2630 | |
| USA | Filing, Examination, Granting | 7940 |
Total:
28,449
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Abstract[English]
The disclosure provides Si-free aluminum alloys comprising Ce, Zn, and Mg suitable for laser powder bed fusion (LPBF) 3D printing. The printed components can be subjected to hot isostatic pressing and further heat treated to provide 3D printed components exhibiting higher hardness than existing Al-Si based alloys produced under the same conditions. The Si-free aluminum alloy resists coarsening of second phase on HIP, retaining high strength and hardness. The alloy also does not need separate solutionizing and water quenching following HIP, thus saving cost, time and permitting design of more delicate and intricate geometries.[French]
L'invention concerne des alliages d'aluminium exempts de Si comprenant du Ce, du Zn et du Mg appropriés pour une impression 3D par fusion laser sur lit de poudre (LPBF). Les composants imprimés peuvent être soumis à un pressage isostatique à chaud (HIP) et à un traitement thermique supplémentaire pour fournir des composants imprimés 3D présentant une dureté supérieure à celle des alliages à base d'Al-Si existants produits dans les mêmes conditions. L'alliage d'aluminium exempt de Si résiste au grossissement de la seconde phase sur le HIP, et conserve une résistance et une dureté élevées. L'alliage n'a également pas besoin d'une mise en solution séparée et d'une trempe à l'eau suivant le HIP, ce qui permet d'économiser des coûts, du temps et de permettre la conception de géométries plus délicates et intriquées.