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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 11643711 B1

PDFFull Text
Date of Patent:
May. 09, 2023

Filed:

Dec. 17, 2018

Laminate shaped article, method for manufacturing the same, and metal powder for laminate shaping

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Norihide Fukuzawa, Tokyo, JP;

Koichi Sakamaki, Tokyo, JP;

Yousuke Nakano, Tokyo, JP;

Kousuke Kuwabara, Tokyo, JP;

Shiho Fukumoto, Tokyo, JP;

Kazuya Saito, Tokyo, JP;

Assignee:

HITACHI METALS, LTD., Tokyo, JP;

Attorney:

JCIPRNET

Primary Examiner:

Weiping Zhu

Int. Cl.
CPC ...
B33Y 80/00 (2015.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/10 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); B22F 1/142 (2022.01); B22F 10/28 (2021.01); B22F 10/36 (2021.01); B22F 9/08 (2006.01); B22F 10/32 (2021.01); B22F 10/366 (2021.01); B22F 10/64 (2021.01);
U.S. Cl.
CPC ...
B33Y 80/00 (2014.12); B22F 1/142 (2022.01); B22F 10/28 (2021.01); B22F 10/36 (2021.01); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/105 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); B22F 9/082 (2013.01); B22F 10/32 (2021.01); B22F 10/366 (2021.01); B22F 10/64 (2021.01); B22F 2301/35 (2013.01); B22F 2304/10 (2013.01);
Abstract

Provided are a laminate shaped article made of a maraging steel and having excellent toughness, a method for manufacturing the same, and a metal powder for laminate shaping. The laminate shaped article is made of a maraging steel comprising 0.1-5.0 mass % of Ti. When sis is performed on concentration distribution of Ti in a cross section parallel to a lamination direction of the above laminate shaped article, a length of a linear Ti-rich portion having a Ti concentration B of (1.5×A) or more with respect to an average Ti concentration A in the cross section is 15 μm or less. In addition, the method for manufacturing the laminate shaped article uses a metal powder made of a maraging steel comprising 0.1-5.0 mass % of Ti, and a heat source output is set to 50-330 W and a scanning speed is set to 480-3000 mm/sec during the laminate shaping.

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