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Role and Application of Aluminum Alloys

A K Rastogi


Alloy wheels are wheels that are made from an alloy of aluminum or magnesium. Alloys
are mixtures of metal and other elements. They generally provide greater strength over
pure metals, which are usually much softer and more ductile. Aircraft manufacturers use
high-strength alloys (principally alloy 7075) to strengthen aluminum aircraft structures.
Aluminum alloy 7075 has Copper (1.6 %), Magnesium (2.5 %) and zinc (5.6 %) added for
ultimate strength, but the copper content makes it very difficult to weld. Countless objects
that simplify as well as increase the quality of our daily life are partly made of aluminum,
For example: CDs, cars, refrigerators, kitchenware, electric power lines, packaging for
food and medicine, computers, furniture and aircrafts. We also use aluminum every day
and we don't often realize it. It constitutes about eight percent of the Earth's land mass.
Interesting Aluminium Facts: Aluminium is present in more than 270 minerals. It is the
most abundant mineral on Earth after oxygen and silicon.

Keywords: aluminum, aluminum alloys, aircrafts, applications, properties

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