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:
Apr. 09, 2024
Filed:
Nov. 11, 2021
Applicant:
Industry-academic Cooperation Foundation Gyeongsang National University, Jinju-si, KR;
Inventors:
Jae Bok Seol, Jinju-si, KR;
Hyo Ju Bae, Jinju-si, KR;
Kwang Gyu Koh, Jinju-si, KR;
Jung Gi Kim, Jinju-si, KR;
Hyo Kyung Sung, Jinju-si, KR;
Young Kook Lee, Seoul, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/06 (2006.01); C21D 8/02 (2006.01); C22C 38/04 (2006.01);
U.S. Cl.
CPC ...
C22C 38/06 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0263 (2013.01); C21D 8/0273 (2013.01); C22C 38/04 (2013.01); C21D 2211/001 (2013.01); C21D 2211/005 (2013.01);
Abstract
There is provided a ferritic lightweight steel which contains 2.0 to 3.0 wt % manganese (Mn), 5.0 to 6.0 wt % aluminum (Al) and 0.1 to 0.3 wt % carbon (C) and has a tensile strength of 900 MPa to 1,108 MPa. The lightweight steel includes ferrite-austenite dual grains as a result of performing low-temperature tempering-induced partitioning (LTP) at 300° C. for 10 minutes after isothermal annealing.