Aluminium alloys are materials made by combining aluminium with other elements, such as copper, magnesium, or zinc. These additions enhance the properties of aluminium, making it stronger, lighter, and more resistant to corrosion. There are two main types of aluminium alloys: wrought alloys, which are shaped through mechanical processes, and cast alloys, which are formed by pouring molten metal into molds. These alloys are widely used in various industries, including aerospace, automotive, and construction, due to their excellent strength-to-weight ratio and versatility. For example, aircraft often use aluminium alloys to reduce weight while maintaining structural integrity, improving fuel efficiency and performance.