High-strength galvanized steel sheet and method for manufacturing the same

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12258644
APP PUB NO 20220064754A1
SERIAL NO

17421475

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Abstract

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A high-strength galvanized steel sheet includes a base steel sheet and a galvanized layer on a surface thereof. The base steel sheet has a predetermined chemical composition and a microstructure in which an area fraction of martensite is 30% or less, an area fraction of pearlite is 1% or less, a total area fraction of tempered martensite and carbide-containing bainite is 30% or more and 99% or less, an area fraction of retained austenite is 1% to 20%, and a total area fraction of ferrite and non-carbide-containing bainite is 45% or less in the steel sheet microstructure in a predetermined region and in which an area fraction of retained austenite grains having two or more crystal orientations is 40% or less in all the retained austenite grains in a predetermined region.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATIONTOKYO 100-0011

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hasegawa, Hiroshi Tokyo, JP 574 7595
Nakagaito, Tatsuya Tokyo, JP 80 502
Sasaki, Kana Tokyo, JP 3 1

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