Surface morphology of unalloyed steels remelted with intense plasma pulses.
The set of unalloyed steels with various carbon concentrations were irradiated with intense plasma pulses with following process parameters: energy density 5 J cm(-2), pulse duration 2 mus, argon or nitrogen atmosphere. The energy density of each pulse was high enough to melt the surface layer of material. The cooling rate was estimated for 10(8) K s(-1) using the modelling method which takes into account heat evolution in the iron sample. Samples were characterized using the scanning electron microscopy technique for remelted surface morphology investigations. The tests with profilometer allowed us to investigate the changes of roughness of the surface layers.
Sartowska
B
B
Institute of Nuclear Chemistry and Technology, Warsaw, Poland. bsarto@orange.ichtj.waw.pl
Piekoszewski
J
J
Waliś
L
L
Barlak
M
M