EP 0157711 B1 19871209 - PROCESS FOR THE MANUFACTURE OF OBJECTS FROM AL-LI-MG-CU ALLOYS WITH HIGH DUCTIBILITY AND ISOTROPY PROPERTIES
Title (en)
PROCESS FOR THE MANUFACTURE OF OBJECTS FROM AL-LI-MG-CU ALLOYS WITH HIGH DUCTIBILITY AND ISOTROPY PROPERTIES
Publication
Application
Priority
FR 8404481 A 19840315
Abstract (en)
[origin: US4652314A] The invention concerns a process for producing products of Al-base alloys essentially containing Li, Mg and Cu as main alloy elements and having a high level of ductility and isotropy. The process comprises subjecting the homogenized product to a "tepid" transformation operation at from 100 DEG to 420 DEG C. The intermediate annealing operations, if required, are carried out in the range of from 200 DEG to 550 DEG C. The rate of cooling after the intermediate annealing operations is generally kept at from 1500 DEG C./second to 30 DEG C./hour. The isotropy and ductility of the resulting products are considerably improved in comparison with the prior art processes.
IPC 1-7
IPC 8 full level
C22C 21/00 (2006.01); C22F 1/00 (2006.01); C22F 1/04 (2006.01); C22F 1/057 (2006.01)
CPC (source: EP US)
C22F 1/057 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE GB IT NL SE
DOCDB simple family (publication)
EP 0157711 A1 19851009; EP 0157711 B1 19871209; AT E31329 T1 19871215; BR 8501142 A 19851112; CA 1268689 A 19900508; DE 3561163 D1 19880121; FR 2561264 A1 19850920; FR 2561264 B1 19860627; IL 74575 A0 19850630; IL 74575 A 19880731; JP S60211057 A 19851023; US 4652314 A 19870324
DOCDB simple family (application)
EP 85420041 A 19850311; AT 85420041 T 19850311; BR 8501142 A 19850314; CA 476402 A 19850313; DE 3561163 T 19850311; FR 8404481 A 19840315; IL 7457585 A 19850312; JP 5154885 A 19850314; US 71069885 A 19850311