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:
Jul. 22, 2014
Filed:
Feb. 19, 2010
Yoshiyasu Kawasaki, Fukuyama, JP;
Tatsuya Nakagaito, Nagoya, JP;
Shinjiro Kaneko, Fukuyama, JP;
Saiji Matsuoka, Kurashiki, JP;
Yasunobu Nagataki, Fukuyama, JP;
Yoshiyasu Kawasaki, Fukuyama, JP;
Tatsuya Nakagaito, Nagoya, JP;
Shinjiro Kaneko, Fukuyama, JP;
Saiji Matsuoka, Kurashiki, JP;
Yasunobu Nagataki, Fukuyama, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A high strength galvanized steel sheet with excellent workability, having a component composition containing C: 0.04% or more, and 0.15% or less, Si: 0.7% or more, and 2.3% or less, Mn: 0.8% or more, and 2.2% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.1% or less, N: 0.008% or less, and the remainder composed of iron and incidental impurities on a percent by mass basis, and a microstructure including 70% or more of ferrite phase, 2% or more, and 10% or less of bainite phase, and 0% or more, and 12% or less of pearlite phase on an area fraction basis and 1% or more, and 8% or less of retained austenite phase on a volume fraction basis, wherein an average crystal grain diameter of ferrite is 18 μm or less and an average crystal grain diameter of retained austenite is 2 μm or less.