Effect of Nd: YAG pulsed laser radiation on oxidation and segregation processes in the surface layers of T8 high speed tool steel: Tribological consequences

Sidashov, A. V.; Козаков, А. Т.; Yaresko, S. I.; Manturov, D. S.; Marunevich, Oksana

doi:10.1016/j.apsusc.2021.150434

Cited by 7 publications

(1 citation statement)

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“…The use of lasers for treating metals and alloys (such as carbon and alloy steels, titanium alloys), cast iron, aluminum alloys, bronze, etc., has rapidly increased over the past few decades. As a result, its impact on the microstructure and mechanical characteristics of the treated materials is thoroughly investigated [1,2]. Numerous experimental research has demonstrated a connection between the irradiation parameters, the resultant structures, and the properties of metals and alloys [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the influence of the processing speed and the linear pulse density of the laser surface texturing process

Adijāns

Lazov

Ilieva

et al. 2023

J. Phys.: Conf. Ser.

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Fine-tuning laser parameters is necessary to achieve the desired quality of the process of laser surface texturing. This requires a set of experiments to assess the influence of the main process parameters on the quality of the surface of a treated alloy. By varying the laser parameters, different laser-material interactions, such as heating, melting, or evaporation can be observed. This study analyzes the influence of two interrelated processing parameters in laser surface texturing – the speed of beam motion on the surface on the one hand, and, on the other, the linear pulse density. They ultimately have a direct impact on the resulting microstructure, hydrophilicity, and electrochemical properties of austenitic steel (AISI 304). By adjusting the pulse repetition rate of a 1064-nm fiber laser from 500 kHz to 1000 kHz at a constant speed of 100 mm/s, the surface wettability changes from hydrophobicity to hydrophilicity. All surfaces treated with laser scanning speeds varying from 20 mm/s to 200 mm/s at a constant rate of 500 kHz are hydrophobic. As a result, the changed ability to repel liquids alters the corrosion properties of the steel in a 0.5 M H2SO4 solution. The results allow one to distinguish ranges of laser-beam parameters that could be useful in selecting certain properties of the stainless-steel surface layer.

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