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Proceedings Paper

Effect of a CO2 laser treatment of steel surface at cryogenic temperature
Author(s): R. Zaremba; Gerard Sliwinski; Rafal Jendrzejewski; W. Serbinski
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Paper Abstract

For a CO2 laser irradiation of the steel samples kept at liquid nitrogen (LN2) temperature of 77 K the transparence window of LN2 below 0.3 eV is utilized. The irradiation effects are analyzed by means of microstructure observations and by the measurements of microhardness and are compared with results obtained for the reference samples of the same material under standard gas shielding conditions. A marked reduction of the heat affected zone for the LN2 case in comparison with that obtained for the reference samples is observed. Microphotographs indicate on a decrease of the grain size dimensions in the remelted and heat affected zones, and especially in the intermediate layers between them. The finer structure of increased homogeneity results in an extension of the surface layer of higher microhardness.

Paper Details

Date Published: 3 October 1997
PDF: 5 pages
Proc. SPIE 3187, Laser Technology V: Applications in Materials Sciences and Engineering, (3 October 1997); doi: 10.1117/12.287836
Show Author Affiliations
R. Zaremba, Institute of Fluid-Flow Machinery (Poland)
Gerard Sliwinski, Institute of Fluid-Flow Machinery (Poland)
Rafal Jendrzejewski, Institute of Fluid-Flow Machinery (Poland)
W. Serbinski, Technical Univ. of Gdansk (Poland)

Published in SPIE Proceedings Vol. 3187:
Laser Technology V: Applications in Materials Sciences and Engineering
Wieslaw L. Wolinski; Jerzy Kusinski, Editor(s)

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