EP 2997172 B1 20200826 - METHOD OF PRODUCTON OF A HIGH STRENGTH STEEL EXHIBITING GOOD DUCTILITY VIA QUENCHING AND PARTITIONING TREATMENT BY ZINC BATH
Title (en)
METHOD OF PRODUCTON OF A HIGH STRENGTH STEEL EXHIBITING GOOD DUCTILITY VIA QUENCHING AND PARTITIONING TREATMENT BY ZINC BATH
Title (de)
HERSTELLUNG EINES HOCHFESTEN STAHLS MIT GUTER DUKTILITÄT MITTELS ABSCHRECK- UND PARTITIONIERUNGSBEHANDLUNG DURCH EIN ZINKBAD
Title (fr)
PROCÉDÉ DE PRODUCTION D'UN ACIER À HAUTE RÉSISTANCE MÉCANIQUE ET À BONNE DUCTILITÉ PAR TRAITEMENT DE TREMPE ET DE PARTITIONNEMENT EN BAIN DE ZINC
Publication
Application
Priority
- US 201361824699 P 20130517
- US 201361824643 P 20130517
- US 2014038425 W 20140516
Abstract (en)
[origin: US2014338797A1] Steel with high strength and good formability is produced with compositions and methods for forming austenitic and martensitic microstructure in the steel. Carbon, manganese, molybdenum, nickel copper and chromium may promote the formation of room temperature stable (or meta-stable) austenite by mechanisms such as lowering transformation temperatures for non-martensitic constituents, and/or increasing the hardenability of steel. Thermal cycles utilizing a rapid cooling below a martensite start temperature followed by reheating may promote formation of room temperature stable austenite by permitting diffusion of carbon into austenite from martensite.
IPC 8 full level
C22C 38/02 (2006.01); C21D 1/18 (2006.01); C21D 1/78 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/18 (2006.01); C22C 38/32 (2006.01); C22C 38/34 (2006.01); C22C 38/38 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01); C23C 2/40 (2006.01)
CPC (source: EP KR MX US)
C21D 1/785 (2013.01 - EP KR US); C21D 6/005 (2013.01 - EP KR US); C21D 8/02 (2013.01 - MX); C21D 8/0205 (2013.01 - KR); C21D 9/46 (2013.01 - KR MX); C22C 38/00 (2013.01 - MX); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP KR MX US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/12 (2013.01 - EP KR MX US); C22C 38/18 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/26 (2013.01 - EP US); C22C 38/32 (2013.01 - EP US); C22C 38/34 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C23C 2/0224 (2022.08 - EP KR MX US); C23C 2/024 (2022.08 - KR); C23C 2/06 (2013.01 - EP KR US); C23C 2/28 (2013.01 - KR); C23C 2/40 (2013.01 - EP KR US); C21D 1/18 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP KR US)
Citation (examination)
- EP 2325346 A1 20110525 - JFE STEEL CORP [JP]
- EP 2524970 A1 20121121 - THYSSENKRUPP STEEL EUROPE AG [DE]
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
DOCDB simple family (publication)
US 2014338797 A1 20141120; AU 2014265214 A1 20151105; AU 2014265214 B2 20161222; AU 2014265262 A1 20151112; AU 2014265262 B2 20161215; BR 112015027447 A2 20170725; BR 112015027447 B1 20200422; BR 112015027901 A2 20170725; BR 112015027901 B1 20200422; CA 2908491 A1 20141120; CA 2908491 C 20190730; CA 2910012 A1 20141120; CA 2910012 C 20200218; CN 105247090 A 20160113; CN 105392906 A 20160309; CN 113151735 A 20210723; EP 2997168 A2 20160323; EP 2997168 B1 20210303; EP 2997172 A2 20160323; EP 2997172 B1 20200826; JP 2016524038 A 20160812; JP 2016526096 A 20160901; JP 2018178262 A 20181115; JP 6843612 B2 20210317; KR 101776241 B1 20170907; KR 101776242 B1 20170907; KR 20160007646 A 20160120; KR 20160007647 A 20160120; KR 20170104158 A 20170914; KR 20170104159 A 20170914; KR 20190101504 A 20190830; MX 2015015332 A 20160715; MX 2015015333 A 20160623; RU 2015141563 A 20170622; RU 2015145865 A 20170622; RU 2015145865 A3 20180329; RU 2018133682 A 20200325; RU 2018133682 A3 20200325; RU 2632042 C2 20171002; RU 2669654 C2 20181012; TW 201446974 A 20141216; TW 201502284 A 20150116; TW 201702397 A 20170116; TW 201708562 A 20170301; TW I560279 B 20161201; TW I564402 B 20170101; TW I616538 B 20180301; TW I627288 B 20180621; US 2014338798 A1 20141120; WO 2014186689 A2 20141120; WO 2014186689 A3 20150122; WO 2014186722 A2 20141120; WO 2014186722 A3 20150108
DOCDB simple family (application)
US 201414279768 A 20140516; AU 2014265214 A 20140516; AU 2014265262 A 20140516; BR 112015027447 A 20140516; BR 112015027901 A 20140516; CA 2908491 A 20140516; CA 2910012 A 20140516; CN 201480028730 A 20140516; CN 201480029127 A 20140516; CN 202110046219 A 20140516; EP 14729827 A 20140516; EP 14734592 A 20140516; JP 2016514120 A 20140516; JP 2016514134 A 20140516; JP 2018090692 A 20180509; KR 20157035337 A 20140516; KR 20157035338 A 20140516; KR 20177024721 A 20140516; KR 20177024722 A 20140516; KR 20197024809 A 20140516; MX 2015015332 A 20140516; MX 2015015333 A 20140516; RU 2015141563 A 20140516; RU 2015145865 A 20140516; RU 2018133682 A 20180925; TW 103117426 A 20140516; TW 103117430 A 20140516; TW 105132762 A 20140516; TW 105135812 A 20140516; US 2014038364 W 20140516; US 2014038425 W 20140516; US 201414280045 A 20140516