EP 2853608 B1 20170927 - Precipitation hardening steel with improved toughness and method
Title (en)
Precipitation hardening steel with improved toughness and method
Title (de)
Ausscheidungshärtender Stahl mit verbesserter Festigkeit und Verfahren
Title (fr)
Acier à durcissement par précipitation avec ténacité améliorée et procédé
Publication
Application
Priority
US 201314038229 A 20130926
Abstract (en)
[origin: EP2853608A1] In some aspects, a heat treatment process (200) is described for precipitation hardening steel. The heat treatment process (200) can include a solution treatment (202) for a precipitation hardening steel part. The solution treatment (202) includes heating the precipitation hardening steel part to an austenitizing temperature. The heat treatment process (200) can also include a quenching or cooling treatment (204, 206), in which the precipitation hardening steel part is cooled to a martensitizing temperature. The heat treatment process (200) can also include an aging treatment (210), in which the precipitation hardening steel part is heated to a temperature of 1000 °F and held at that temperature for five or more hours until a fracture toughness of the precipitation hardening steel part is greater than 120 ksiˆšin.
IPC 8 full level
C21D 1/74 (2006.01); C21D 6/00 (2006.01); C21D 6/02 (2006.01); C21D 6/04 (2006.01)
CPC (source: EP US)
C21D 1/18 (2013.01 - EP US); C21D 1/74 (2013.01 - EP US); C21D 6/004 (2013.01 - EP US); C21D 6/02 (2013.01 - EP US); C21D 6/04 (2013.01 - EP US); C21D 9/0068 (2013.01 - EP US); C22C 38/40 (2013.01 - US); C21D 2211/008 (2013.01 - EP US)
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)
EP 2853608 A1 20150401; EP 2853608 B1 20170927; CA 2862600 A1 20150326; CA 2862600 C 20170926; US 2016138122 A1 20160519
DOCDB simple family (application)
EP 14175600 A 20140703; CA 2862600 A 20140910; US 201314038229 A 20130926