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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12558721 B1

PDFFull Text
Date of Patent:
Feb. 24, 2026

Filed:

Apr. 08, 2020

4d printing method for in-situ regulation of functional properties of nickel-titanium alloy and use thereof

Applicants:

South China University of Technology, Guangzhou, CN;

Guangdong Huayi Plumbing Fittings Industry Co., Ltd., Kaiping City, CN;

Sun Yat-sen University Cancer Center, Guangzhou, CN;

Inventors:

Chao Yang, Guangzhou, CN;

Haizhou Lu, Guangzhou, CN;

Yanfei Ding, Kaiping City, CN;

Yuanyuan Li, Guangzhou, CN;

Jin Wang, Guangzhou, CN;

Assignees:

SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangzhou, CN;

GUANGDONG HUAYI PLUMBING FITTINGS INDUSTRY CO., LTD., Kaiping, CN;

SUN YAT-SEN UNIVERSITY CANCER CENTER, Guangzhou, CN;

Attorney:

JMB Davis Ben-David

Primary Examiner:

Ricardo D Morales

Int. Cl.
CPC ...
B22F 1/00 (2022.01); B22F 1/05 (2022.01); B22F 1/14 (2022.01); B22F 1/17 (2022.01); B22F 9/08 (2006.01); B22F 10/28 (2021.01); B22F 10/34 (2021.01); B22F 10/36 (2021.01); B22F 10/366 (2021.01); B23K 26/342 (2014.01); B23K 103/14 (2006.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 70/00 (2020.01); C22C 1/04 (2023.01); C22C 14/00 (2006.01); C22C 19/00 (2006.01); C22C 19/03 (2006.01);
U.S. Cl.
CPC ...
B22F 1/09 (2022.01); B22F 1/14 (2022.01); B22F 1/17 (2022.01); B22F 9/082 (2013.01); B22F 10/34 (2021.01); B23K 26/342 (2015.10); B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 70/00 (2014.12); C22C 14/00 (2013.01); C22C 19/007 (2013.01); C22C 19/03 (2013.01); B22F 1/05 (2022.01); B22F 2009/0836 (2013.01); B22F 10/28 (2021.01); B22F 10/36 (2021.01); B22F 10/366 (2021.01); B22F 2301/15 (2013.01); B22F 2301/205 (2013.01); B22F 2304/10 (2013.01); B23K 2103/14 (2018.08);
Abstract

The present invention belongs to the field of additive manufacturing technology, and discloses a 4D printing method capable of in-situ regulating functional properties of nickel-titanium (NiTi) alloys and the application thereof. The method comprises the following steps: subjecting NiTi alloy bars to atomization milling to obtain NiTi alloy powder with a particle size of 15-53 μm, placing the NiTi alloy powder in a discharge plasma assisted ball mill for discharge treatment to promote the activation of powder activity, then adding nano-sized Ni powder with a particle size of 100-800 nm to obtain mixed powder, then continuing the discharge treatment to realize the metallurgical bonding between the NiTi alloy powder and the nano-sized Ni powder to obtain the modified powder, and finally using the additive manufacturing technology to prepare and form the modified powder into a functionalized NiTi alloy. The present invention achieves the metallurgical bonding between the nano-sized Ni powder and the large-sized spherical NiTi alloy powder by adding the nano-sized Ni powder in the process of discharge treatment, which is conducive to preparing a bulk alloy with uniform composition, structure and properties and the parts made therewith.

Find Patent Forward Citations

Yang, Chao. (2026). 4d printing method for in-situ regulation of functional properties of nickel-titanium alloy and use thereof (U.S. Patent No. 12558721). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12558721

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