PLATED STEEL SHEET, METHOD FOR MANUFACTURING HOT-DIP GALVANIZED STEEL SHEET, AND METHOD FOR MANUFACTURING ALLOYED HOT-DIP GALVANIZED STEEL SHEET

Title:

PLATED STEEL SHEET, METHOD FOR MANUFACTURING HOT-DIP GALVANIZED STEEL SHEET, AND METHOD FOR MANUFACTURING ALLOYED HOT-DIP GALVANIZED STEEL SHEET

Document Type and Number:

WIPO Patent Application WO/2018/073919

Kind Code:

A1

Abstract:

Provided is a plated steel sheet having a chemical composition including, in terms of mass%, at least 0.03% to 0.70% C, 0.25% to 2.50% Si, 1.00% to 5.00% Mn, 0.100% or less P, 0.010% or less S, 0.001% to 2.500% sol. Al, and 0.020% or less N, with the remainder consisting of iron and impurities, wherein the metal composition thereof includes more than 5.0 vol% residual austenite and more than 5.0 vol% tempered martensite, and the residual austenite has a C content of 0.85 mass% or more.

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Inventors:

HAGA JUN (JP)
SANO KOHICHI (JP)
HAYASHI KOUTAROU (JP)
HAYASHI KUNIO (JP)
KAMEDA MASAHARU (JP)
UENISHI AKIHIRO (JP)
KAWATA HIROYUKI (JP)

Application Number:

PCT/JP2016/081018

Publication Date:

April 26, 2018

Filing Date:

October 19, 2016

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

C22C38/00; C21D9/46; C22C38/58; C23C2/02; C23C2/06; C23C2/28

Domestic Patent References:

WO2013018741A1	2013-02-07
WO2009096344A1	2009-08-06
WO2016136627A1	2016-09-01
WO2016113789A1	2016-07-21

Foreign References:

JP2014034716A	2014-02-24
JP2013540901A	2013-11-07

Other References: