Influence of Vibration in the Course of Surfacing of a Protective Layer on Its Microstructure and Impact-Abrasive Wear

Pokhmurska, H.; Студент, М. М.; Lanets, Olena; Voitovych, A. A.

doi:10.1007/s11003-015-9856-2

Cited by 8 publications

(1 citation statement)

References 4 publications

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“…However, the main disadvantages of layers obtained by melting of such CW are dendrites of the first and second order with needle-like morphology. Sharp peaks of the solid phase serve as stress concentrators, from which the cracking of the deposited metal begins, followed by its crumble under impact loading [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characteristics and Wear Resistance of the Cladding Layers Obtained by Melting of Cored Wires with Simultaneous Vibration of Substrate

Студент

Vojtovych

Pokhmurska

et al. 2019

Strojnícky Časopis - Journal of Mechanical Engineering

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A wear proof layer was obtained by applying vibration with a frequency of 100 Hz and amplitude of 0; 70; 300 μm to the cored wire of Fe-Cr-B-C doping system during welding. It was shown that horizontal vibration affects the grinding process of boride inclusions: their average diameter reduces from 175 to 5 μm, and the amount of (FeCr)2B plastic phases increases during the redistribution of phases. Wear resistance of the metal, which was deposited using horizontal vibration with an amplitude of 300 μm, increases by 2.3-2.5 times due to wear with the fixed and unfixed abrasive material, and by 2.8 times due to wear under impact loads. For restoration and strengthening of large-size parts, it is proposed to add Al-Mg powder (Al = 47 - 53 %, Mg = 53-47% wt. %) to the CW charge to increase wear resistance of the deposited metal of the Fe-Cr-B-C system. This contributes to the dispersion of the boride inclusions, the average diameter of which decreases from 70 to 5 μm. In the structure of the deposited metal of the Fe-Cr-B-C system, inclusions of the complex alloyed nitrides are extricated with an average size less than 1.0 μm. As a result, the average value of microhardness increases from 700 to 900 HV. Wear resistance of the deposited metal increases by 1.5 times due to wear with the fixed and unfixed abrasive material, and by 2.0 times due to wear under impact loads.

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Section: Introductionmentioning

confidence: 99%