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.:
Date of Patent:
Aug. 27, 2019
Filed:
Oct. 05, 2015
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/46 (2006.01); C23C 2/06 (2006.01); C23C 2/12 (2006.01); C23C 2/28 (2006.01); C21D 1/18 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/60 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 8/04 (2006.01); C23C 2/40 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/08 (2006.01); C22C 38/38 (2006.01); B21D 22/02 (2006.01); B32B 15/01 (2006.01); C21D 1/673 (2006.01); C22C 18/00 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C21D 9/48 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); B21D 22/022 (2013.01); B32B 15/012 (2013.01); B32B 15/013 (2013.01); C21D 1/18 (2013.01); C21D 1/673 (2013.01); C21D 6/001 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0278 (2013.01); C21D 8/0436 (2013.01); C21D 9/48 (2013.01); C22C 18/00 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/38 (2013.01); C22C 38/60 (2013.01); C23C 2/06 (2013.01); C23C 2/12 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); B32B 2255/06 (2013.01); B32B 2255/205 (2013.01); C21D 6/008 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01); Y10T 428/12757 (2015.01);
Abstract
A high-strength hot-pressed part having a specified chemical composition, a microstructure including, in terms of volume fraction, 80% or more of a martensite phase, in a range of 3.0% to 20.0% of a retained austenite phase, a tensile strength TS of 1500 MPa or more, and a uniform elongation uEl of 6.0% or more. A method for manufacturing the high-strength hot-pressed part, the method comprising performing a heating process and a hot press forming process on a raw material steel sheet in order to obtain a hot-pressed part having a specified shape.