1 | Ternopil Ivan Pul’uj National Technical University, 56 Ruska Str., Ternopil 46001, Ukraine |
2 | Institute of Strength Physics and Materials Science SB RAS, 2/4 pr. 2 Akademicheskii, Tomsk 634021, Russia |
3 | Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia |
4 | Technical University of Košice, Department of Technology and Materials, Košice, Slovakia |