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:
Jan. 09, 2018
Filed:
Jun. 26, 2013
Kobe Steel, Ltd., Kobe-shi, JP;
Elijah Kakiuchi, Kobe, JP;
Toshio Murakami, Kobe, JP;
Katsura Kajihara, Kobe, JP;
Tatsuya Asai, Kakogawa, JP;
Naoki Mizuta, Kakogawa, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A hot-dip galvanized steel sheet contains specific amounts of C, Si, Mn, P, S, Ti, Al, and N with the remainder being iron and unavoidable impurities. Bainitic ferrite, martensite, retained γ, and ferrite (α) are present each in a specific area ratio. The remainder γ has a specific C concentration. Sub-grains in the recrystallized α and un-recrystallized α have a specific grain diameter. The surface area ratio of α and worked α having a grain diameter of 5 μm or more is 5% or less. The average particle diameter of TiC particles inside α grains is 10 nm or less.