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Aluminium-silicon alloys typically contain 3% to 25% silicon content. [1] Casting is the primary use of aluminum-silicon alloys, but they can also be utilized in rapid solidification processes and powder metallurgy. Alloys used by powder metallurgy, rather than casting, may contain even more silicon, up to 50%. [1]
Alusil as a hypereutectic aluminium-silicon alloy (EN AC-AlSi17Cu4Mg / EN AC-48100 or A390) contains approximately 78% aluminium and 17% silicon. [1] [2] This alloy was theoretically conceived in 1927 by Schweizer & Fehrenbach, [3] of Badener Metall-Waren-Fabrik, [4] but practically created only by Lancia [5] in the same year, for its car engines.
AlSiC-10, containing 45 vol.% of A 356.2 aluminium alloy and 55 vol.% silicon carbide. Its thermal conductivity is 190–200 W/m K. Its thermal expansion roughly matches e.g. printed circuit boards, FR-4, and Duroid. Its density at 25 °C is 2.96 g/cm 3. AlSiC-12, containing 63 vol.% of A 356.2 aluminium alloy and 37 vol.% silicon carbide. Its ...
AlSi10Mg-0403 alloy is a specific type of AlSi10Mg that comprises aluminium alloyed with silicon of mass fraction up to 10%, small quantities of magnesium and iron, along with other minor elements. The presence of silicon makes the alloy both harder and stronger than pure aluminium due to the formation of Mg 2 Si precipitate. [1]
The AlMgSi alloys are therefore understood in the standards as a separate group (6000 series) and not as a subgroup of aluminum-magnesium alloys that cannot be hardenable. AlMgSi is one of the aluminum alloys with medium to high strength, high fracture resistance, good welding suitability, corrosion resistance and formability. They can be ...
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Welded aluminium alloy bicycle frame, made in the 1990s. An aluminium alloy (UK/IUPAC) or aluminum alloy (NA; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc.
Larger amounts of silicon are alloyed to form with magnesium Mg 2 Si (magnesium silicide) which, like aluminium-magnesium-silicon alloy, improves strength and hardenability. [13] Lithium is added to some alloys with contents between 1.5% and 2.5%. Due to the very low density of Li (0.53 g/cm³ compared to 2.7 g/cm³ of aluminium), this leads to ...