METHOD FOR PRODUCING A STEEL SHEET HAVING IMPROVED STRENGTH, DUCTILITY AND FORMABILITY

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EP 3 177 749 B8

(12)	CORRECTED EUROPEAN PATENT SPECIFICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	23.01.2019 Bulletin 2019/04

(45)	Mention of the grant of the patent:
	17.10.2018 Bulletin 2018/42

(21)	Application number: 15777734.3

(22)	Date of filing: 07.08.2015

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International Patent Classification (IPC):

C23C 2/02^(2006.01)
C23C 2/06^(2006.01)
C23C 2/40^(2006.01)
C21D 1/26^(2006.01)
C22C 38/02^(2006.01)
C22C 38/18^(2006.01)
C25D 3/22^(2006.01)
C21D 1/18^(2006.01)
C22C 38/06^(2006.01)
C23F 17/00^(2006.01)

C21D 8/02^(2006.01)
C23C 2/12^(2006.01)
C21D 9/46^(2006.01)
C21D 1/34^(2006.01)
C22C 38/04^(2006.01)
B32B 15/01^(2006.01)
C25D 3/56^(2006.01)
C21D 1/19^(2006.01)
C22C 38/38^(2006.01)
C22C 38/34^(2006.01)

(86)	International application number:
	PCT/IB2015/056029

(87)	International publication number:
	WO 2016/020899 (11.02.2016 Gazette 2016/06)

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METHOD FOR PRODUCING A STEEL SHEET HAVING IMPROVED STRENGTH, DUCTILITY AND FORMABILITY

VERFAHREN ZUR HERSTELLUNG EINES STAHLBLECHS MIT VERBESSERTER FESTIGKEIT, DEHNBARKEIT UND VERFORMBARKEIT

PROCÉDÉ DE FABRICATION D'UNE TÔLE D'ACIER AYANT UNE RÉSISTANCE, UNE DUCTILITÉ ET UNE APTITUDE AU FORMAGE AMÉLIORÉES

(84)	Designated Contracting States:
	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 Validation States:
	MA

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Priority:

07.08.2014 WO PCT/IB2014/001492

(43)	Date of publication of application:
	14.06.2017 Bulletin 2017/24

(73)	Proprietor: ArcelorMittal
	1160 Luxembourg (LU)

(72)	Inventors:
	MASSE, Jean-Philippe 38000 Grenoble (FR) HELL, Jean-Christophe 57283 Maizieres-les-metz Cedex (FR)

(74)	Representative: Lavoix
	2, place d'Estienne d'Orves 75441 Paris Cedex 09 75441 Paris Cedex 09 (FR)

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References cited: :

EP-A1- 2 762 589
CN-A- 102 534 132

WO-A1-2012/120020
US-A1- 2014 170 439

JOHN G. SPEER ET AL.: "The "Quenching and Partitioning" Process: Background and Recent Progress.", MATERIALS RESEARCH, vol. 8, no. 4, 1 April 2008 (2008-04-01), pages 417-423, XP002737458,
SPEER J G ET AL: "Analysis of microstructure evolution in quenching and partitioning automotive sheet steel", METALLURGICAL AND MATERIALS TRANSACTIONS A: PHYSICAL METALLURGY AND MATERIALS SCIENCE DECEMBER 2011 SPRINGER BOSTON USA, vol. 42, no. 12, December 2011 (2011-12), pages 3591-3601, XP002737459, DOI: 10.1007/S11661-011-0869-7
DE KNIJF DORIEN ET AL: "Effect of fresh martensite on the stability of retained austenite in quenching and partitioning steel", MATERIALS SCIENCE AND ENGINEERING A: STRUCTURAL MATERIALS: PROPERTIES, MICROSTRUCTURES AND PROCESSING, ELSEVIER BV, NL, vol. 615, 28 July 2014 (2014-07-28), pages 107-115, XP029056881, ISSN: 0921-5093, DOI: 10.1016/J.MSEA.2014.07.054

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