DMLS-Based Additive Manufacturing of AlSi10Mg Alloy Samples and Investigation of Heat Treatment Effects on Mechanical Properties for Biomedical Applications

Metal-additive manufacturing (AM) has evolved into a technologically competent method for manufacturing critical components, particularly intricate metal parts, with applications spanning the aerospace, automotive, medical, and fashion industries. Direct Metal Laser Sintering (DMLS) technique, a form of laser powder bed fusion, has emerged as a prominent technique for processing aluminum alloys due to their lightweight, high strength, and corrosion resistance. This research paper investigates the mechanical properties of aluminum alloys produced using DMLS, focusing on the impact of heat treatment before and after processing. The study aims to identify gaps in current research and propose future directions. The paper analyzes AM-fabricated samples’ microstructure and tensile, compression, and impact properties in their initial state and after heat treatment using established characterization methods. The findings highlight the influence of heat treatment on microstructure and mechanical characteristics. The paper emphasizes the significance of AM, particularly DMLS, in fabricating intricate metal components from aluminum alloys. It explores the mechanical properties of these alloys subjected to ‘pre’ and ‘post’ heat treatment, aiming to identify research gaps and potential avenues for further investigation. The use of the metal AM process for producing the samples has proved beneficial, as their properties are far better, even without any post-treatment. On the contrary, the heat treatment reduces the mechanical properties of Metal-AM samples, unlike in conventional manufacturing processes.