EP 0474530 B1 19951213 - Process for manufacturing products with very high tensile strength from unstable austenitic steel, and products obtained
Title (en)
Process for manufacturing products with very high tensile strength from unstable austenitic steel, and products obtained
Title (de)
Verfahren zum Herstellen von hoch bruchfesten Produkten aus instabilem austenitischem Stahl und so hergestellte Produkte
Title (fr)
Procédé d'élaboration de produits à très haute charge à la rupture à partir d'un acier austénitique instable, et produits en résultant
Publication
Application
Priority
FR 9010828 A 19900830
Abstract (en)
[origin: EP0474530A1] According to this process the steel is subjected to a first plastic deformation at a temperature above the limiting temperature (Md) of the formation of martensite by deformation and lower than the recrystallisation temperature, and then to a second deformation at a temperature lower than the said temperature (Md). During the second deformation the steel is deformed in a determined range of temperature of the formation of martensite so that, in the case of an additional rational deformation of 0.1, the increase in the content of martensite formed does not at any time exceed 20%.
IPC 1-7
IPC 8 full level
C21D 8/00 (2006.01); C21D 8/06 (2006.01); C22C 38/00 (2006.01)
CPC (source: EP)
C21D 8/005 (2013.01); C21D 8/065 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0474530 A1 19920311; EP 0474530 B1 19951213; AT E131539 T1 19951215; CA 2050208 A1 19920301; CA 2050208 C 20020820; DE 69115392 D1 19960125; DE 69115392 T2 19960530; ES 2083543 T3 19960416; FR 2666352 A1 19920306; FR 2666352 B1 19921211; GR 3019185 T3 19960630; JP H0681033 A 19940322; PT 98792 A 19920731; PT 98792 B 19990129; TW 226033 B 19940701
DOCDB simple family (application)
EP 91402232 A 19910812; AT 91402232 T 19910812; CA 2050208 A 19910829; DE 69115392 T 19910812; ES 91402232 T 19910812; FR 9010828 A 19900830; GR 960400587 T 19960305; JP 22036791 A 19910830; PT 9879291 A 19910828; TW 80106872 A 19910829