L.A Dobrzański - Division of Materials Processing Technology andComputer Techniques in Materials Science, Instituteof Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego St. ۱۸a, ۴۴-۱۰۰ Gliwice, Poland
M Piec - Division of Materials Processing Technology andComputer Techniques in Materials Science, Instituteof Engineering Materials and Biomaterials, SilesianUniversity of Technology, Konarskiego St. ۱۸a, ۴۴-۱۰۰ Gliwice, Poland
A Klimpel - Welding Department, Silesian University ofTechnology, Konarskiego St. ۱۸a,۴۴-۱۰۰ Gliwice, Poland
Z Trojanowa - Department of Metal Physics, Charles University Prague, Ke Karlovu ۵,۱۲۱ ۱۶ Praha ۲, Czech Republic

Laser surface modification, although for a number of years, is a technology which is still in its infancy. This paper presents the results of laser alloying influence on structure and properties of the surface of the X38CrMoV5-3 hot work steel, carried out using the high power diode laser (HPDL). Niobium carbide powder was used for alloying. In the paper investigation results are presented of the melting and alloying of ceramic particles on the surface layer. Results of the metallographic examinations qualitative X-ray phase analysis and the mechanical properties are presented.

HPDL laser, hot work tool steel, ceramic particles