C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 21/06 (2006.01)
Patent
CA 2211433
Laminated or extruded products for obtaining welded AlMgMn-type aluminium alloy structures are described, said products having the following contents in weight percent: 3.0 < Mg < 5.0; 0.75 < Mn < 1.0; Fe < 0.25; Si < 0.25; Zn < 0.40; optionally, one or more components selected from Cr, Cu, Ti, Zr, such that: Cr < 0.25; Cu < 0.20; Ti < 0.20; Zr < 0.20; other components < 0.05 each and < 0.15 in all, wherein Mn + 2Zn > 0.75. The welded products have improved mechanical and fatigue resistance, while retaining their toughness and corrosion resistance, and are particularly suitable for applications in shipbuilding, utility vehicles and bicycle frames made of welded tubes.
L'invention concerne des produits laminés ou filés pour constructions soudées en alliage d'aluminium du type AlMgMn. Ces produits ont pour composition (% en poids): 3,0 < Mg < 5,0, 0,75 < Mn < 1,0, Fe < 0,25, Si < 0,25, Zn < 0,40, éventuellement un ou plusieurs des éléments Cr, Cu, Ti, Zr, tels que: Cr < 0,25, Cu < 0,20, Ti < 0,20, Zr < 0,20, autres éléments < 0,05 chacun et < 0,15 au total; avec: Mn + 2Zn > 0,75. Ces produits présentent à l'état soudé une résistance mécanique et une tenue en fatigue améliorée sans conséquences défavorables pour la ténacité et la résistance à la corrosion, et sont particulièrement aptes à la construction navale, aux véhicules industriels et aux cadres de bicyclettes en tubes soudés.
Cottignies Laurent
Hoffmann Jean-Luc
Pillet Georges
Raynaud Guy-Michel
Pechiney Rhenalu
Robic
LandOfFree
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