Structure Formation and Properties of Weld Overlay Produced by Laser Cladding under the Influence of Nanoparticles of High-melting Compounds

Murzakov, M A; Petrovskiy, V N; Birukov, V P; Джумаев, П. С.; Polski, V I; Markushov, Y V; Bykovskiy, D P

doi:10.1016/j.phpro.2015.08.372

Cited by 4 publications

(2 citation statements)

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“…There are many methods of making composite coatings. These are, for example, laser cladding technology [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 11 , 12 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ], traditional surfacing technologies [ 28 , 29 , 30 , 31 ] or laser processing of pre-coat [ 32 , 33 ]. Regardless of the production method used, it is important to obtain a composite microstructure, where the reinforcing phase will be clearly separated from the metal matrix.…”

Section: Introductionmentioning

confidence: 99%

“…The authors found that strengthening phases Ni 3 Ta and TaC contributed to increased hardness. In paper [ 22 ] the laser cladding process of nickel-based powders with the addition of nanopowders of tantalum carbide and tungsten carbide with water-based hydroxyethylcellulose as the binder was described. Coatings with additives of TaC nanoparticles at various weight concentrations (5%, 10%, 15%, 20%) were obtained.…”

Section: Introductionmentioning

confidence: 99%

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Manufacturing Technology and Properties of Fe/TaC Metal Matrix Composite Coatings Produced on Medium Carbon Steel Using Laser Processing—Preliminary Study on the Single Laser Tracks

Bartkowski

2021

Materials

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The paper presents study results of Fe/TaC metal matrix composite coatings produced on tool steel using laser processing of TaC pre-coat. The Fe/TaC coatings were produced in two steps. First, a pre-coat in the form of a paste based on tantalum carbide and water glass was made and then applied to the steel substrate. In the second step, the TaC pre-coat was remelted with steel substrate using a diode laser beam with a rated power of 3 kW. A constant scanning speed of the laser beam of 3 m/min and three types of laser beam power: 500 W, 800 W and 1100 W were applied. Tests were carried out on three different thicknesses of the TaC pre-coat: 30 µm, 60 µm and 90 µm. The influence of pre-coat thickness and laser beam power on the microstructure, chemical composition and microhardness were analyzed. A possibility of producing coatings with a characteristic composite structure was found, where the iron from the substrate became the matrix, and the introduced tantalum carbides—the reinforcing phase. It was found that too high power of the laser beam leads to complete melting of the introduced primary TaC particles. It was also found that the use of a thicker TaC pre-coat contributes to microhardness increase.

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