Cailiao Baohu (Jul 2022)

Effect of Laser Power on Microstructure and Properties of Laser Hardened 0Cr13Ni4Mo Stainless Steel

  • FU Li, CHEN Xiao - ming, LIU Wei, HUO Jia - xiang, LI Yu - luo, ZHANG Kai

DOI
https://doi.org/10.16577/j.issn.1001-1560.2022.0196
Journal volume & issue
Vol. 55, no. 7
pp. 150 – 154

Abstract

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In order to study the the effect of laser quenching power on the microstructure and wear resistance of the 0Cr13Ni4Mo stainless steel of hydraulic mechinery flow passage component, semiconductor lasers with a laser quenching power of 2.5 kW, 3.0 kW, 3.5 kW respectively were used for surface quenching. The microhardness tester, impact toughness tester, friction and wear tester, and scanning electron microscope were used to analyze and test the microhardness, impact toughness and wear resistance of the three resulting quenched layers. By observing the wear microstructure of the coating, the wear mechanism of the coating was analyzed. Results showed that the microhardness, impact toughness and wear resistance of the laser quenched layer all increased with the rising of laser quenching power. The wear mechanism of the quenched layer was mainly adhesive wear. In general, laser quenching could improve the wear resistance of 0Cr13Ni4Mo stainless steel significantly and it had a prospect of wide application.

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