EP 0227563 B1 19900418 - PROCESS OD DESENSITIZATION TO EXFOLIATING CORROSION OF LITHIUM-CONTAINING ALUMINIUM ALLOYS, RESULTING SIMULTANEOUSLY IN A HIGH MECHANICAL RESISTANCE AND IN GOOD DAMAGE LIMITATION
Title (en)
PROCESS OD DESENSITIZATION TO EXFOLIATING CORROSION OF LITHIUM-CONTAINING ALUMINIUM ALLOYS, RESULTING SIMULTANEOUSLY IN A HIGH MECHANICAL RESISTANCE AND IN GOOD DAMAGE LIMITATION
Publication
Application
Priority
FR 8518208 A 19851128
Abstract (en)
[origin: EP0227563A1] 1. A process for the heat treatment of Al alloys containing Li to improve their resistance to exfoliation corrosion while retaining a high level of mechanical strength and good resistance to damage characterised in that the final ageing operation is carried out in the following range of temperatures T (in degree C) and times t (in hours) : t >= 24 X 5 exp ((150-T)/30) t =< 80 X 5 exp ((150-T)/30) with : T =< 160 degrees C for Mg >= 2% T =< 160 degrees C-5 (2-% Mg) degrees C for 1 =< Mg =< 2% T =< 155 degrees C for Mg =< 1%.
IPC 1-7
IPC 8 full level
C22F 1/00 (2006.01); C22F 1/04 (2006.01); C22F 1/047 (2006.01); C22F 1/057 (2006.01)
CPC (source: EP)
C22F 1/047 (2013.01); C22F 1/057 (2013.01)
Citation (examination)
EP 0214381 A1 19870318 - BOEING CO [US]
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0227563 A1 19870701; EP 0227563 B1 19900418; AT E52109 T1 19900515; BR 8605809 A 19870825; CA 1291927 C 19911112; DE 3670510 D1 19900523; ES 2014248 B3 19900701; IL 80765 A0 19870227; JP S62142752 A 19870626
DOCDB simple family (application)
EP 86420293 A 19861126; AT 86420293 T 19861126; BR 8605809 A 19861127; CA 523887 A 19861126; DE 3670510 T 19861126; ES 86420293 T 19861126; IL 8076586 A 19861126; JP 28302486 A 19861127