Microstructure and sliding wear properties of HVOF sprayed, laser remelted and laser clad Stellite 6 coatings

Houdková, Šárka; Pala, Zdeněk; Smazalová, Eva; Vostřák, Marek; Česánek, Zdeněk

doi:10.1016/j.surfcoat.2016.09.012

Cited by 74 publications

(57 citation statements)

References 49 publications

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“…The different microstructures in HAZ may lead to the deviation of mechanical property and corrosion resistance in this zone, causing heterogeneity along the cross section of the cladded sample. Fortunately, the laser‐cladding technique results in a narrower HAZ than that obtained by traditional surface‐hardening techniques, such as thermal spraying and arc welding …”

Section: Resultsmentioning

confidence: 99%

Microstructure and Electrochemical Corrosion Behaviors of Laser‐Cladded 2205 Duplex Stainless Steel

Liu

Huang

Bao

et al. 2020

steel research int.

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Herein, single-pass laser-cladded 2205 duplex stainless steel is fabricated on the surface of Q235 carbon steel at different laser powers in the range of 1.7À2.7 kW. The relationships between laser powers and geometrical characteristics, microstructure, microhardness, and corrosion resistance of the cladded layers (CLs) are analyzed. The results show that with the increase in laser power, the width and height of the bead increase, and the dilution rate and depth of the molten pool also significantly increase. Furthermore, the shape of ferrite gradually transforms from coarse to slender and eventually turns into a discontinuous vermicular shape. It is found that the CL obtained at a laser power of 2.3 kW has higher average microhardness and exhibits better corrosion resistance than the other samples (%20 times better than that of the carbon steel substrate), with its corrosion potential and corrosion current density of À0.146 V and 0.13 μA cm À2 , respectively.

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Section: Resultsmentioning

confidence: 99%

Microstructure and Electrochemical Corrosion Behaviors of Laser‐Cladded 2205 Duplex Stainless Steel

Liu

Huang

Bao

et al. 2020

steel research int.

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“…Tables 1-3 show the chemical composition of the Stellite 6 spray, its basic mechanical properties, the nominal values of the stress, as well as the nominal values of hardness in hot conditions. The specified mean composition values of Stellite 6, which were obtained from the Scanning Electron Microscopy/Energy Dispersive X-Ray Spectroscopy (SEM/EDX) measurement [27], the density of the test material being 8.44 g•cm −3 , can be found in Table 1. The table does not present the temperature changes of nominal stress values E mat , Rp 0.2 , Rm of the core of the examined material as dominant within the framework of adequate changes of its surface.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Prediction of Cutting Parameters of HVOF-Sprayed Stellite 6

et al. 2020

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In this research, the authors set out to propose a new method of predicting and adjusting the main cutting parameters of chip machining, namely spraying on the substrate. In the experiments, a total of 28 turning cuts on a Stellite 6 coating layer were realized. The base materials of the Stellite 6 layers were EN S235JRG1 and carbide WC-Co. This work aimed to find out and optimize the influence of different combinations of cutting parameters. Due to the coating solution, the work is focused on the evaluation of the roughness Ra (μm) of the turned substrate, the grain size Dgr (μm) of the spraying, the normal stress σrz (MPa), the residual stress σrez (MPa), the specific cutting force Fc (N), the quality of adhesion to the substrate Adhmp (MPa) and other parameters. For the sake of a comprehensive solution to the problem, several new predictive equations and subsequent suggestions for solutions have been derived from this research topic based on the newly obtained experimental results. The proposed models and procedures make it possible to get new results and insights into coating technologies.

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“…O equipamento utilizado foi uma máquina de ensaio universal, marca Shimadzu, modelo AG-X plus100kN, com uma velocidade constante de deslocamento de 0,013 mm/s. O ensaio de desgaste abrasivo foi baseado na norma ASTM G65 [8] com o objetivo de simular a resistência à abrasão dos revestimentos, utilizando areia de sílica padronizada como abrasivo seco. Ao final do ensaio, foi possível medir o desgaste através da perda de volume, considerando a densidade do material e a diferença de massa inicial e final dos corpos de prova.…”

Section: Aplicação Dos Revestimentosunclassified

Avaliação da resistência ao desgaste abrasivo dos revestimentos wc-10co, diamalloy® e stellite 6® depositados por hvof

Gotardo

Masotti

Geremia³

et al. 2018

Tecno-log.

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A resistência ao desgaste abrasivo dos revestimentos WC-10Co (Carboneto de Tungstênio), Diamalloy® e Stellite 6®, depositados através do processo de aspersão térmica hipersônica (HVOF) sobre um substrato de aço carbono, foi avaliada através do ensaio normatizado ASTM G 65. Este método utiliza uma roda de borracha pressionada contra os corpos de prova e de areia de sílica como terceiro corpo. Os revestimentos foram caracterizados por metalografia com o objetivo de avaliar quanto à presença de poros, óxidos e partículas não fundidas. Além disso, caracterizou-se a dureza e a adesão dos revestimentos ao substrato metálico. Através dos resultados apresentados neste estudo, pode-se observar, ao final do ensaio abrasivo, que o revestimento com maior resistência ao desgaste abrasivo foi o que também apresentou maior dureza superficial.

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Microstructure and sliding wear properties of HVOF sprayed, laser remelted and laser clad Stellite 6 coatings

Cited by 74 publications

References 49 publications

Microstructure and Electrochemical Corrosion Behaviors of Laser‐Cladded 2205 Duplex Stainless Steel

Microstructure and Electrochemical Corrosion Behaviors of Laser‐Cladded 2205 Duplex Stainless Steel

Prediction of Cutting Parameters of HVOF-Sprayed Stellite 6

Avaliação da resistência ao desgaste abrasivo dos revestimentos wc-10co, diamalloy® e stellite 6® depositados por hvof

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