The paper "Review of Selective Laser Melting: Materials and Applications" by Yap et al. (2015) provides a comprehensive overview of Selective Laser Melting (SLM), an additive manufacturing (AM) technique that uses high-power-density lasers to melt and fuse metallic powders. The process involves building components by selectively melting and fusing powders within and between layers, resulting in near-net-shape parts with up to 99.9% relative density. The authors discuss the physical phenomena associated with SLM, including laser-material interaction, balling, and thermal fluctuation, and their effects on the quality of the final product. The review focuses on the applications and mechanical properties of SLM materials, particularly metals such as steel, titanium, and nickel-based alloys. Steel and iron-based alloys are highlighted for their flexibility in fabricating components with structured porosity, making them suitable for medical, dental, and lightweight structural applications. Titanium and its alloys are noted for their biocompatibility and high strength, making them ideal for medical implants and lightweight structures. Nickel-based alloys, such as Inconel, are studied for high-temperature applications in aircraft engines due to their excellent corrosion resistance and strength. The paper also discusses the challenges and advancements in SLM, including the impact of laser parameters, powder size, and processing strategies on the quality of the final parts. It concludes with a summary of the current trends and future outlook in SLM research, emphasizing the potential for further improvements in material properties and manufacturing processes.The paper "Review of Selective Laser Melting: Materials and Applications" by Yap et al. (2015) provides a comprehensive overview of Selective Laser Melting (SLM), an additive manufacturing (AM) technique that uses high-power-density lasers to melt and fuse metallic powders. The process involves building components by selectively melting and fusing powders within and between layers, resulting in near-net-shape parts with up to 99.9% relative density. The authors discuss the physical phenomena associated with SLM, including laser-material interaction, balling, and thermal fluctuation, and their effects on the quality of the final product. The review focuses on the applications and mechanical properties of SLM materials, particularly metals such as steel, titanium, and nickel-based alloys. Steel and iron-based alloys are highlighted for their flexibility in fabricating components with structured porosity, making them suitable for medical, dental, and lightweight structural applications. Titanium and its alloys are noted for their biocompatibility and high strength, making them ideal for medical implants and lightweight structures. Nickel-based alloys, such as Inconel, are studied for high-temperature applications in aircraft engines due to their excellent corrosion resistance and strength. The paper also discusses the challenges and advancements in SLM, including the impact of laser parameters, powder size, and processing strategies on the quality of the final parts. It concludes with a summary of the current trends and future outlook in SLM research, emphasizing the potential for further improvements in material properties and manufacturing processes.