[Kovove materialy - Metallic materials]
    Mon - December 09, 2024 - 06:27 No. of hits : 1805133 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 60 (2022), Issue 5

Investigation of the influence of low-frequency harmonic oscillations on deposited metal
SERGII NOVYKOV
vol. 60 (2022), no. 5, pp. 315 - 326
DOI: 10.31577/km.2022.5.315

Abstract
An analysis of current research results shows that specific changes in the deposited metal microstructure are already observed at the periodical impact of 2.5 Hz frequency on it. However, most current research concerns oscillations from the frequency series, which is much higher than 10 Hz, while the oscillation amplitude values are in the range from tens of microns to 2 mm. This circumstance led to the performance of studies on the influence of mechanical harmonic oscillations of the weld pool with a frequency range from 2.5 to 4.5 Hz at the amplitude of 3–7 mm on the weld pool and the HAZ metal. The specimens for investigations were obtained by the GMAW surfacing process in the condition of weld pool oscillations. Treatment of data was conducted by the least squares regression analysis method to plot polynomials.

Key words
weld pool oscillations, deposited metal hardness

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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