Abstract
Aluminum alloys are widely utilized in aerospace, automotive, marine, and structural industries due to their light weight, corrosion resistance, and mechanical adaptability. The performance of these alloys is largely dictated by the type, amount, and interaction of alloying elements. This article examines the effects of key alloying elements such as copper, magnesium, silicon, zinc, and manganese on the microstructure, mechanical strength, corrosion resistance, and thermal stability of aluminum alloys. A comparison between wrought and cast alloys is presented, along with emerging trends in high-strength and corrosion-resistant aluminum systems. Additionally, the role of precipitation hardening, grain refinement, and solid-solution strengthening is discussed in the context of performance enhancement. Challenges and future directions for advanced alloy development, including sustainable processing and recycling, are also highlighted.
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