1. Welding Department, Silesian University of Technology, Faculty of Mechanical Engineering, Konarskiego 18a St., 44-100 Gliwice, Poland (Corresponding author), e-mail: jacek.gorka@polsl.pl, https://orcid.org/0000-0001-7838-3636
2. Institute of Engineering of Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Konarskiego 18a St., 44-100 Gliwice, Poland https://orcid.org/0000-0002-6617-3524