EP 0273838 A2 19880706 - Process to increase the recrystillization temperature of aluminium and its alloys.
Title (en)
Process to increase the recrystillization temperature of aluminium and its alloys.
Title (de)
Verfahren zur Erhöhung der Rekristallisationstemperatur von Aluminium und Aluminiumlegierungen.
Title (fr)
Procédé permettant d'augmenter la température de recristallisation de l'aluminium et de ses alliages.
Publication
Application
Priority
FR 8617015 A 19861202
Abstract (en)
[origin: US4816088A] The invention relates to a method for the deformational transformation of aluminum and its alloys comprising the steps of deforming the aluminum in the solid state and annealing the deformed aluminum at a temperature at which recrystallization occurs. The recrystallization temperature of the aluminum is raised and the grain size is minimized by adding to the aluminim 5 to 1000 ppm uranium prior to the deformation. The method is particularly applicable to the production of aluminum based sheets intended to be subjected to heating at a relatively high temperature, for example the heating which accompanies enamelling or brazing operations, where the heating operation could change the mechanical properties of the sheets.
Abstract (fr)
L'invention est relative à un procédé permettant d'augmenter la température de recristallisation de l'aluminium et de ses alliages, et de minimiser la taille des grains. Elle consiste à ajouter 5 à 1000 ppm d'uranium au moment de l'élaboration du métal. Ce procédé est appliqué notamment à l'obtention de tôles à base d'aluminium destinées à être soumises à un chauffage à température relativement élevée, comme par exemple, celui qui accompagne les opérations d'émaillage ou de brasage et ce, sans que ce traitement puisse altérer les propriétés mécaniques desdites tôles.
IPC 1-7
IPC 8 full level
C22F 1/04 (2006.01); C22C 1/02 (2006.01); C22C 21/00 (2006.01)
CPC (source: EP US)
C22C 21/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0273838 A2 19880706; EP 0273838 A3 19880720; EP 0273838 B1 19910417; AT E62714 T1 19910515; CA 1311631 C 19921222; DE 3769454 D1 19910523; DK 631187 A 19880603; DK 631187 D0 19871201; ES 2021745 B3 19911116; FI 875303 A0 19871201; FI 875303 A 19880603; FI 88311 B 19930115; FI 88311 C 19930426; FR 2607522 A1 19880603; FR 2607522 B1 19920430; GR 3001797 T3 19921123; IE 60679 B1 19940810; IE 873260 L 19880602; IS 1402 B6 19891215; IS 3291 A7 19880603; JP H0261532 B2 19901220; JP S63143244 A 19880615; NO 168186 B 19911014; NO 168186 C 19920122; NO 875004 D0 19871201; NO 875004 L 19880603; PT 86268 A 19880101; PT 86268 B 19901107; US 4816088 A 19890328
DOCDB simple family (application)
EP 87420324 A 19871201; AT 87420324 T 19871201; CA 553251 A 19871201; DE 3769454 T 19871201; DK 631187 A 19871201; ES 87420324 T 19871201; FI 875303 A 19871201; FR 8617015 A 19861202; GR 900401184 T 19910418; IE 326087 A 19871201; IS 3291 A 19871201; JP 30305787 A 19871130; NO 875004 A 19871201; PT 8626887 A 19871202; US 12428187 A 19871123