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Aluminium and its alloys
Published in William Bolton, R.A. Higgins, Materials for Engineers and Technicians, 2020
The commercial grades of aluminium (1200) are sufficiently strong and rigid for some purposes, and the addition of up to 1.5% manganese (3103) will produce a stronger alloy. The aluminium-magnesium alloy with 1.2% manganese and 1% magnesium (3004) is used for beverage cans. It combines strength with ductility to make it possible to deep-draw the cans. The aluminium-magnesium alloys have a very good resistance to corrosion, and this corrosion-resistance increases with the magnesium content, making them particularly suitable for use in marine conditions (Table 17.6). The aluminium-magnesium alloy with 4.5% magnesium and 0.35% manganese (5182) is used for the lids of beverage cans since it is harder than 3004 and so more able to withstand the forces involved with ring pulls.
Soldering, brazing and welding
Published in Andrew Livesey, Bicycle Engineering and Technology, 2020
The various grades of pure aluminium and certain alloys are amenable to brazing. Aluminium–magnesium alloys containing more than 2% magnesium are difficult to braze, as the oxide film is tenacious and hard to remove with ordinary brazing fluxes. Other alloys cannot be brazed because they start to melt at temperatures below that of any available brazing alloy. Aluminium–silicon alloys of nominal 5%, 7.5% or 10% silicon content are used for brazing aluminium and the alloy of aluminium and 1.5% manganese.
Texture transition in Al–Mg alloys: effect of magnesium
Published in Philosophical Magazine, 2020
R. Kalsar, R. Madhavan, R. K. Ray, Satyam Suwas
The quest for lighter and stronger materials has triggered interest in aluminium alloys as a substitute for steels in body panels of automotives. Aluminium-magnesium alloys are potential candidate for many structural applications because of their low density. These alloys have been investigated for quite some time in order to render them suitable for specific applications as these materials exhibit reasonable strength along with good corrosion resistance. Further, Al–Mg alloys could be the model materials for examining the effect of change in stacking fault energy on the evolution of texture and microstructure.