Resumen:

Laser powder bed fusion (LPBF) additive manufacturing of precise metal components for aerospace and biomedical applications using key powder materials with exceptional properties, such as Ti-, Ni-, and Co-based alloys, is a promising approach, given the possibility of reducing the part weight and manufacturing components with complex geometry. Firstly, various combined thermomechanical post-processing techniques will be estimated to improve corrosion/oxidation and mechanical performance in the Inconel 718 alloy manufactured by LPBF. Additionally, the post-processing of the LPBF-manufactured medical Co-based superalloy products will be demonstrated and discussed. Secondly, to reduce post-processing costs and efforts, one of the key challenges remains the need to improve the surface quality during the additive manufacturing of metal components using the LPBF 3D technology, minimizing surface roughness across complex geometries. A novel approach to achieving a more uniform surface quality in the LPBF-manufactured components will be presented, developing customized build strategies by controlling the laser toolpaths and input energy in the critical regions across the part.

Biografía: 

Dmytro Lesyk joined the Aeronautics Advanced Manufacturing Center (CFAA) of the University of the Basque Country (EHU) in October 2023 within the ADAGIO Post-doctoral Fellowship Programme under the Marie Sklodowska-Curie grant. His research project is focused on the Laser 3D printing and post-processing of aircraft products: Verifying structural and surface integrity to increase the operating life of heat-resistant superalloy parts. Dr. Dmytro Lesyk is also an Associate Professor at the Laser Systems and Advanced Technologies Department of the National Technical University of Ukraine »Igor Sikorsky Kyiv Polytechnic Institute» since 2021. He holds a Bachelor’s degree in Mechanical Engineering in 2009 and a Master’s degree majoring in »Advanced Technology for Materials Processing» in 2011 from the Igor Sikorsky Kyiv Polytechnic Institute. In 2016, he obtained his PhD degree majoring in «Processes of Physic-Technical Treatment» at the home university. PhD thesis titled «Enhancing the surface integrity of steel parts by combined laser-ultrasonic treatment». In 2013-2014, he underwent PhD Fellowship training at the University of the Basque Country under the supervision of Prof. Aitzol Lamikiz within the Erasmus Mundus EWENT Program. Dr. Dmytro Lesyk was awarded the DAAD Research Grant for Doctoral Candidates and Young Academics and Scientists, working with post-processing of Inconel alloys produced by laser powder bed fusion 3D technology at the Otto von Guericke University Magdeburg, Germany in 2018-2019. In 2022-2023, he also recently underwent Post-doctoral Fellowship training at the West Pomeranian University of Technology, Poland within the Ulam NAWA program. He also was a Visiting Researcher at the University of Idaho, USA within the Fulbright Research and Development Program in 2022-2023.