Additive Manufacturing of Aluminum Alloys

Aluminum alloys are essential in aerospace, automotive, and rail transportation because they offer a great strength-to-weight ratio, resist corrosion, and improve energy efficiency. Additive manufacturing (AM) provides a new way to produce aluminum parts. It allows for complex shapes, quick prototyping, and tailored alloy development. However, aluminum AM still faces significant challenges, like high reflectivity, poor powder flow, porosity, and solidification cracking. These issues limit wider use. This chapter reviews these technical barriers and discusses strategies to tackle them, including alloy design, ceramic reinforcement, and process optimization. It also examines how AM influences microstructure changes, mechanical properties, and corrosion behavior. The chapter emphasizes the effects of post-processing and surface treatment methods. Finally, it highlights the growing role of data-driven modeling and artificial intelligence in improving AM processes. By detailing current advancements, ongoing problems, and future paths, this chapter aims to be a helpful guide for advanced aluminum AM.