Selective laser melting (SLM) is the most popular AM technique that enables production of complicated metal products with high precision, flexibility, acceptable surface finish and material efficiency by melting metal powders using laser energy.
Since SLM process parameters affect the multiple quality attributes of SLM parts, it is very important to perform optimization and effect assessment of SLM process parameters. AlSi10Mg alloy is widely used in the industrial fields such as automotive and aerospace industries, and it is suitable for SLM processes due to its good castability, good strength, lower thermal expansion coefficient, and excellent wear and corrosion resistance.
Yang Ji Yon, a post-graduate student at the Faculty of Material Science and Technology, performed an analysis of the relationship between the properties (tensile strength, hardness and relative density) and process parameters (laser power LP, scan speed SS, and overlap rate OR) of SLM-manufactured AlSi10Mg alloy using Taguchi and TOPSIS methods.
For the individual properties, the optimal process parameters were LP 320-360W, SS 600mm/s and OR 35%, and the effect rankings varied according to the properties. For the TOPSIS-based overall quality index, the optimal process parameters were LP 320W, SS 600mm/s and OR 35%, and the effect ranking was SS, OR and LP.
For further details, you can refer to her paper “Relationship between Properties and Process Parameters for AlSi10Mg Alloy Manufactured by Selective Laser Melting” in “Proceedings of KUTIC-2025”.