Assessment of the quality of abrasion-resistant plates welded joint

Górka, Jacek

doi:10.2298/jmmb190515010g

Cited by 7 publications

(5 citation statements)

References 29 publications

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“…Unlike these studies, however, published findings on abrasion resistance of welded joints were of a global character due to the limitations of the research methods. Based on various standards, e.g., ASTM G65, ISO 28080: 2021 (rubber wheel—dry sand), GOST 23.208-79, ASTM G99 and DIN ISO 7148-1 (pin-on-disk) [ 21 , 22 , 23 ], these measurements were carried out in such a way that they overlapped different zones of the welded joint and hence the determined wear resistance appeared to be somewhat averaged. In order to distinguish between tribological properties of different parts of such a joint, the test area must entirely lie within the zone of interest.…”

Section: Introductionmentioning

confidence: 99%

Use of the Ball-Cratering Method to Assess the Wear Resistance of a Welded Joint of XAR400 Steel

et al. 2023

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Wear-resistant steels are designed to allow for operation under extreme loading conditions. They combine large strength with resilience and resistance to abrasive wear. In stock, the steel is subjected to preliminary heat treatment. However, any further processing at temperatures higher than 200 °C results in tempering that influences the mechanical properties of the material. The presented paper aims to study changes in abrasive wear properties across the welded joint made out of this steel, and its prime novelty lies in using the ball-cratering method to test the wear resistance of the joints. To distinguish between different crystalline structures in the weld, metallographic and XRD analyses were performed that resulted in the determination of five primary zones for which wear tests were carried out. Abrasive wear rates, studied across the welded joint, indicate that the material in the HAZ has the lowest resistance to abrasive wear. Similarly, the obtained values of the wear index show decreasing resistance of the material approaching the joint axis.

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Section: Introductionmentioning

confidence: 99%

Use of the Ball-Cratering Method to Assess the Wear Resistance of a Welded Joint of XAR400 Steel

et al. 2023

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“…Welding was the primary method used to join aluminum alloy structures because it could decrease the high manufacturing cost and simplify product design [7][8][9][10] . Hence, the welding of 7N01 aluminum alloy plates has attracted many interests in recent years due to its importance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of A7N01 aluminum alloy weld joints filled with ER5356 and ER5087 weld wires

Xie

et al. 2022

J min metall B Metall

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The A7N01-T5 aluminum alloy plates with a thickness of 12 mm were welded with the ER5356 and ER5087 welding wires, respectively, by the method of Metal Inert Gas (MIG) welding. The mechanical properties and microstructures of the welded joints were investigated by micro-hardness measurement, tensile test, energy disperse spectroscopy (EDS), electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM). The results showed that the tensile strength and elongation of 7N01/5087 welded joint (the 7N01 aluminum alloy plate welded with ER5087 wire) were greater than those of 7N01/5356 welded joint (the 7N01 aluminum alloy plate welded with ER5356 wires), respectively. The high strength and good elongation of 7N01/5087 welded joint were mainly attributed to microstructure refinement in the weld zone through adding Zr element to promote the nucleation of Al grains around the Al3Zr sites.

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“…Laser cladding offers some advantages over the other methods of cladding or coatings [1][2][3][4][5][6][7][8][9][10]. The most significant advantages are high power density, localized and precise heating, high scanning speed, thus low heat input, low penetration depth and low dilution.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Laser Deposition of Composite WC-Ni Layers with Forced Local Cryogenic Cooling

Lisiecki

Ślizak²

2021

Materials

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The purpose of this study was to demonstrate the effect of forced and localized cooling by nitrogen vapours stream under cryogenic conditions during laser deposition of WC-Ni powder on the geometry, microstructure of clad layers and dry sliding wear resistance of the coatings. For this purpose, comparative tests were performed by conventional laser cladding at free cooling conditions in ambient air and by the developed novel process of laser deposition with additional localized cooling of the solidifying deposit by nitrogen vapours stream. Due to presence of gaseous nitrogen in the region of the melt pool and solidifying deposit, the process was considered as combining laser cladding and laser gas nitriding (performed simultaneously), thus the hybrid process. The influence of the heat input and cooling conditions on the geometrical features, dilution rate, share of carbides relative to the matrix, and the fraction share of carbides, as well as hardness profiles on cross sections of single stringer beads was analysed and presented. The XRD, EDS analysis and the sieve test of the experimental powder were used to characterize the composite WC-Ni type powder. The OM, SEM, EDS and XRD test methods were used to study the microstructure, chemical and phase composition of clad layers. Additionally, ball-on-disc tests were performed to determine the wear resistance of representative coatings under dry sliding conditions. The results indicate that the novel demonstrated technique of localized forced cooling of the solidifying deposit has advantageous effect, because it provides approximately 20% lower penetration depth and dilution, decreases tendency for tungsten carbides decomposition, provides more uniform distribution and higher share of massive eutectic W2C-WC carbides across the coating. While the conventionally laser cladded layers show tendency for decomposition of carbide particles and resolidifying dendritic complex carbides mainly M2C, M3C and M7C3 containing iron, nickel, and tungsten, and with Ni/Ni3B matrix. The quantitative relationship between heat input, cooling conditions and the carbides grain size distribution as well as carbides share in relation to the matrix was determined.

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Assessment of the quality of abrasion-resistant plates welded joint

Cited by 7 publications

References 29 publications

Use of the Ball-Cratering Method to Assess the Wear Resistance of a Welded Joint of XAR400 Steel

Use of the Ball-Cratering Method to Assess the Wear Resistance of a Welded Joint of XAR400 Steel

Microstructure and mechanical properties of A7N01 aluminum alloy weld joints filled with ER5356 and ER5087 weld wires

Hybrid Laser Deposition of Composite WC-Ni Layers with Forced Local Cryogenic Cooling

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