Aluminum alloys having improved properties are provided. The alloy includes about 8 to about 12 weight percent silicon, about 0.5 to about 1.5 weight percent copper, about 0.2 to about 0.4 weight percent magnesium, 0 to about 0.5 weight percent iron, about 0.3 to about 0.6 weight percent manganese, 0 to about 1.5 weight percent nickel, and 0 to about 0.5 weight percent zinc. Aluminum may be present in an amount between about 80 and 91 weight percent. The alloy may include about 0.1 to about 0.5 weight percent each of trace elements such as titanium, vanadium, and/or zirconium, and up to about 0.25 weight percent of all other trace elements. In addition, the alloy may contain about 0.03 to about 0.1 weight percent of strontium, sodium, and/or antimony, and up to 5 ppm phosphorus. Also disclosed is a high pressure die cast article, such as an engine block.

Disclosed is an aluminum alloy having superior elasticity and wear resistance. The aluminum alloy has superior elasticity and wear resistance and improved wear properties by including additional reinforcing phase formation such as Al.sub.3Ni phase formation. In particular, the reinforcing phase may be generated by adding nickel (Ni) that may reinforce and enhance properties which may be decreased due to generation of a ternary phase such as TiAlSi. The aluminum alloy comprises an amount of about 13 to 21% by weight of the silicon (Si), an amount of about 1 to 5% by weight of the nickel (Ni), an amount of about 4 to 5% by weight of the titanium (Ti), an amount of about 0.7 to 1% by weight of boron (B), and a remainder of Al based on a total weight of the aluminum alloy.

Disclosed is an aluminum alloy having superior elasticity and wear resistance. The aluminum alloy has superior elasticity and wear resistance and improved wear properties by including additional reinforcing phase formation such as Al.sub.3Ni phase formation. In particular, the reinforcing phase may be generated by adding nickel (Ni) that may reinforce and enhance properties which may be decreased due to generation of a ternary phase such as TiAlSi. The aluminum alloy comprises an amount of about 13 to 21% by weight of the silicon (Si), an amount of about 1 to 5% by weight of the nickel (Ni), an amount of about 4 to 5% by weight of the titanium (Ti), an amount of about 0.7 to 1% by weight of boron (B), and a remainder of Al based on a total weight of the aluminum alloy.