Alloys of aluminium with manganese and magnesium
The alloy contains: 1.0 to 1.6% MP; 0,7% Fe; 0.6% of Si, 0.2% Ti and si; 0,1% Zn; 0.05% Of the MD; the rest Al. Such alloys are not hardened by heat treatment, deformed in hot and in cold condition. Increases the ductility annealing at 350−410°C. corrosion resistant alloy (and weld) high, is almost the same as that of pure aluminum. The alloy is available to all types of welding and soldered satisfactorily, but poorly cut. Used for the manufacture of welded tanks, oil and fuel pipes, automotive radiators, utensils.
Amg1, Amg2, AMGZ, Amg4, AMg5, AMg6. General characteristics
Alloys based on Al-MD — Magnolia. well-deformed in hot and cold condition. The increase of magnesium up to five (AMg5, AMg6) alloys deformed bad — nagaravatta quickly and require repeated annealing.
Alloys based on Al-MD corrosion-resistant, not prone to stress corrosion cracking and intergranular corrosion (especially in the annealed condition). The corrosion resistance of the weld similar to the base material. The corrosion resistance of alloy AMg6 depends mainly on annealing temperature. The optimum temperature 265−285°C, especially for-worked material. Satisfactory corrosion resistance can be obtained after the final annealing at 310 °C. For additional protection against corrosion can be anodized or apply paint. For example, rivets alloy Amg5p anodize.
Weld alloys are relatively easy TIG, resistance spot and seam welding. For filler material suitable wire core alloy (alloy Amg2 -wire Emgs). Ductility of the welds is high and the strength is at least 90% of the strength of the basic material. The more doped alloy, the easier it is cut. Alloys Amg1 and Amg2 bad cut in the annealed condition and satisfactorily cold-worked; alloys Amg4 Amgs and cut satisfactorily, and alloys AMg5, AMg6 and Amg5p good.
These alloys are suitable for corrosion resistant lightly welded and riveted structures. Thus, of the alloys AMTS, Amg2, AMGZ produce pipelines, tanks for petrol and other liquids, deck superstructure of sea and river vessels as well as stained glass, doors, window frames, partitions. Alloy AMC handles make cans and pots. For sredneshirotnykh designs suitable alloys AMg5 and Amgb (frames and car bodies, suspension loaded ceilings, construction of walls and bulkheads of ships, electromate, the hull and masts of vessels, lifts, cranes nodes, etc.).
|The percentage composition of additives to aluminum alloys based on Al-MD|
|Amg3,5||-||5154||0,25||0,4||0,1||0,1||3,1−3,9||0,15−0,35||0,2||0,2||Be 0.0008 inch;
Of 0.1−0.5 (Mn + Cr)
|AMg5||1550||5056||0,5||0,5||0,1||0,3−0,8||4,8−5,8||-||0,2||0,02−0,1||Of 0.0002−0,005 Be||2,65|
|AMg6||1560||-||0,4||0,4||0,1||0,5−0,8||5,8−6,8||0,2||0,02−0,1||Of 0.0002−0,005 Be||2,64|
|АМг61||1561||-||0,4||0,4||0,1||0,7−1,1||5.5 to 6.5||-||0,2||-||0,0001−0,003 Be
|-||1 570||-||0,2||0,3||0,1||0,2−0,6||5,3−6,3||-||0,1||-||Of 0.0002−0,005 Be