EP 3889315 A4 20211124 - IRON-ALUMINUM-BASED PLATED STEEL SHEET FOR HOT PRESS FORMING, HAVING EXCELLENT HYDROGEN DELAYED FRACTURE PROPERTIES AND SPOT WELDING PROPERTIES, AND MANUFACTURING METHOD THEREFOR
Title (en)
IRON-ALUMINUM-BASED PLATED STEEL SHEET FOR HOT PRESS FORMING, HAVING EXCELLENT HYDROGEN DELAYED FRACTURE PROPERTIES AND SPOT WELDING PROPERTIES, AND MANUFACTURING METHOD THEREFOR
Title (de)
PLATTIERTES STAHLBLECH AUF DER BASIS VON EISEN-ALUMINIUM FÜR HEISSPRESSFORMEN MIT HERVORRAGENDEN EIGENSCHAFTEN GEGEN VERZÖGERTEN WASSERSTOFFINDUZIERTEN BRUCH UND PUNKTSCHWEISSEIGENSCHAFTEN SOWIE VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
TÔLE D'ACIER PLAQUÉE À BASE DE FER-ALUMINIUM POUR FORMAGE À CHAUD AYANT D'EXCELLENTES PROPRIÉTÉS DE FRACTURE RETARDÉE À L'HYDROGÈNE ET PROPRIÉTÉS DE SOUDAGE PAR POINTS, ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20180152573 A 20181130
- KR 2019016766 W 20191129
Abstract (en)
[origin: EP3889315A1] The present invention provides an iron-aluminum-based plated steel sheet, and a manufacturing method therefor, the iron-aluminum-based plated steel sheet comprising a base steel sheet and a plated layer formed on the surface of the base steel sheet, wherein the alloy plated layer comprises: a diffusion layer comprising an Fe-Al-based intermetallic compound having a cubic structure; and an alloyed layer formed on the diffusion layer and composed of an alloy phase differing from that of the cubic structure, the thickness of the diffusion layer is 3-20 µm, and the thickness of the diffusion layer is greater than 50% of the total thickness of the plated layer.
IPC 8 full level
C23C 2/28 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C23C 2/12 (2006.01); C23C 2/26 (2006.01); C23C 2/40 (2006.01); C23C 24/04 (2006.01); C23C 28/02 (2006.01)
CPC (source: EP KR US)
B21D 35/007 (2013.01 - KR); C21D 1/673 (2013.01 - EP); C22C 21/02 (2013.01 - EP); C22C 21/08 (2013.01 - EP); C22C 38/001 (2013.01 - EP KR); C22C 38/02 (2013.01 - EP KR); C22C 38/04 (2013.01 - EP KR); C22C 38/06 (2013.01 - EP KR); C22C 38/28 (2013.01 - EP); C22C 38/32 (2013.01 - EP); C23C 2/12 (2013.01 - EP KR); C23C 2/265 (2013.01 - EP KR US); C23C 2/28 (2013.01 - EP KR US); C23C 2/29 (2022.08 - EP KR US); C23C 2/40 (2013.01 - EP KR); C23C 24/04 (2013.01 - KR); C23C 28/021 (2013.01 - EP KR); C23C 28/023 (2013.01 - EP KR)
Citation (search report)
- [I] KR 20150075435 A 20150706 - POSCO [KR]
- [I] WO 2018158166 A1 20180907 - TATA STEEL IJMUIDEN BV [NL]
- [XI] EP 0743374 A1 19961120 - MATSUSHITA ELECTRIC WORKS LTD [JP], et al
- [XA] WO 2018117769 A1 20180628 - POSCO [KR]
- See references of WO 2020111883A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3889315 A1 20211006; EP 3889315 A4 20211124; CN 113166911 A 20210723; CN 113166911 B 20230822; KR 102280092 B1 20210722; KR 20200066238 A 20200609
DOCDB simple family (application)
EP 19891572 A 20191129; CN 201980078926 A 20191129; KR 20190156854 A 20191129