1. Institute of Metallurgy and Materials Science, Polish Academy of Sciences, W.S. Reymonta 25, 30-059 Kraków, Poland
2. Technical University Ostrava, Department of Mechanical Engineering, 17 Listopadu 15, Ostrava, Czech Republic
3. Silesian Technical University, Department of Metallurgy and Materials Science, Z. Krasińskiego 8, 40-019 Katowice, Poland