316L is a type of stainless steel and is frequently used in many applications such as biomaterials, nuclear reactors, power plants, the chemical and petrochemical industry, the paint industry, food factories, mining, aviation, and automotive, thanks to their quality and chemical content, which can provide good corrosion resistance but moderate mechanical properties. Recently, 316L has been produced with additive manufacturing methods such as selective laser melting (SLM), which is frequently used in both scientific and industrial fields, as it allows the production of complex and light structures in addition to traditional methods. In some cases, coatings can be applied to stainless steel to improve surface properties. Coatings may also be useful for high-temperature applications regarding wear or oxidation resistance. Thermochemical surface treatments or other diffusion processes, such as boriding, improve the material's performance and life in the application areas or expand the application areas. In this study, the pack boriding process was applied to 316L samples produced with SLM at 850°C for 2, 4, and 6 hours. The contents and thickness of the boride layers formed on the borided samples were determined and examined in terms of the thermal stress they could create. An evaluation was made regarding their possible protection capability at high-temperature applications.
Anahtar Kelimeler: 316L, SLM, boriding, thermal stress