Effect of laser remelting on tribological properties of Babbitt alloy

Ni, Yuquan; Dong, Guangneng; Xing, Li; Wang, Wei

doi:10.1088/2053-1591/ab308d

Cited by 18 publications

(13 citation statements)

References 25 publications

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“…Studies conducted in other centers [ 19 , 20 ] have also shown the possibility of reducing the coefficient of friction as a result of applying appropriate surface treatment. Depending on the laser parameters, laser remelting of the surface layer allows the value of the coefficient of friction under lubricated friction conditions to be reduced to the range of 0.06–0.12.…”

Section: Resultsmentioning

confidence: 99%

“…Depending on the laser parameters, laser remelting of the surface layer allows the value of the coefficient of friction under lubricated friction conditions to be reduced to the range of 0.06–0.12. However, at very low loads of 5–15 N, these values are higher than for materials after FSP tested under the load of 50 N [ 19 ]. The coefficient of friction results obtained by surface texturing, where the coefficient of friction oscillates around the value of 0.06, were similar to the results obtained by FSP [ 21 ].…”

Section: Resultsmentioning

confidence: 99%

“…Y. Ni et al [ 19 ] proved that using the process of laser remelting of the tin Babbit surface promotes homogenization and refinement of the microstructure and improvement of the tribological properties, including reduction of the wear rate of this alloy. In the work of B.A.…”

Section: Introductionmentioning

confidence: 99%

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Effects of the Processing Parameters of Friction Stir Processing on the Microstructure, Hardness and Tribological Properties of SnSbCu Bearing Alloy

et al. 2020

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In the study, the friction stir processing (FSP) method was used to modify the surface layer of a tin-based bearing alloy. The modification was aimed at extending the service life of bearings by improving their tribological properties. The results of investigations of the microstructure, hardness and tribological properties of the SnSbCu bearing alloy after FSP using various rotational speeds of the tool—280, 355, 450 and 560 RPM—and the constant traverse speed of 355 mm/min are presented. Particular attention was paid to the possibility of changing the morphology of the precipitates present in the alloy, and to the impact of this parameter on improvement of the tribological properties. The research carried out in this paper covered investigations of the microstructure using light and scanning electron microscopy (SEM) along with analysis of the chemical composition in micro-areas and Brinell hardness tests. Additionally, the sizes of the SnSb and CuSn precipitates present in the microstructure before and after the modification process were determined, as were the tribological properties under technically dry friction conditions and lubrication with TU 32 oil. It was proven that using friction stir processing favors refinement of the microstructure and improves the tribological properties of the analyzed alloy.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Effects of the Processing Parameters of Friction Stir Processing on the Microstructure, Hardness and Tribological Properties of SnSbCu Bearing Alloy

et al. 2020

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“…Potekhin et al [8] tested various casting methods, including the turbulent casting method developed by the authors of the cited work, which made it possible to obtain a tin bearing alloy with the best microstructure with globular intermetallic phase precipitates and the most favorable tribological properties. The results concerning the improvement of the properties of tin matrix bearing alloys as a result of surface treatment can be found in [9,10]. Dong et al [9] proved that applying the process of laser remelting of the tin Babbitt surface promotes homogenization and refinement of the microstructure as well as improvement of the tribological properties, including a reduction in the wear rate of this alloy under lubricated friction conditions, at 25-100°C.…”

Section: Introductionmentioning

confidence: 99%

“…The results concerning the improvement of the properties of tin matrix bearing alloys as a result of surface treatment can be found in [9,10]. Dong et al [9] proved that applying the process of laser remelting of the tin Babbitt surface promotes homogenization and refinement of the microstructure as well as improvement of the tribological properties, including a reduction in the wear rate of this alloy under lubricated friction conditions, at 25-100°C. Due to the rapid cooling during laser remelting, the grain growth was inhibited, and the microstructure of the bearing alloy on the tin matrix was homogenized, which translated into an increase in the hardness of this alloy and a decrease in the coefficient of friction.…”

Section: Introductionmentioning

confidence: 99%

Characterization of microstructure and selected properties of SnSbCu alloy after FSP

Hrabia-Wiśnios

Leszczyńska-Madej

Madej

et al. 2021

Int J Adv Manuf Technol

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The paper presents the results of research on the microstructure and selected mechanical properties of the SnSbCu-bearing alloy after friction stir processing (FSP). The Whorl tool was used for modification; the process was carried out using two rotational speeds of the tool: 280 and 450 RPM and a constant linear speed of 355 mm/min. Microstructure studies were performed employing the techniques of light microscopy and scanning electron microscopy along with analysis of the chemical composition of micro-areas. Additionally, the phase composition was investigated by means of the X-ray diffraction method and statistical analysis of the precipitates present in the investigated alloy. In addition, hardness, flexural strength, and uniaxial compression tests were performed before and after FSP modification. It was proved that using FSP to modify the SnSbCu alloy promotes refinement and homogenization of the microstructure, as well as improvement of the flexural strength, whereas no changes in the hardness level were found.

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Experimental investigations of heat generation and microstructure evolution during friction stir processing of SnSbCu alloy

Leszczyńska-Madej

Hrabia-Wiśnios

Węglowska

et al. 2022

Archiv.Civ.Mech.Eng

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The paper presents the results of experimental investigations of the heat generation and microstructure evolution during the friction stir processing (FSP) of the SnSb11Cu6 alloy. The Triflute tool was used for modification; the process was carried out using two rotational speeds of the tool: 280 and 560 RPM and a constant linear speed of 355 mm/min. Microstructure studies were performed employing the techniques of light microscopy and scanning electron microscopy along with analysis of the chemical composition of micro-areas. Additionally, the phase composition was investigated by means of the X-ray diffraction method, and electron backscatter diffraction (EBSD) analysis and hardness testing were performed before and after FSP modification. Furthermore, measurements of the temperature directly on the modified surface by means of a thermal imaging camera and the temperature in the modified zone with a thermocouple system were performed. It was proved that using FSP to modify the SnSbCu alloy promotes refinement and homogenization of the microstructure, as well as improvement of the hardness. The hardness of the starting material was 24 HB, and after FSP, the hardness increased and amounted to, respectively, 25 and 27 HB after processing at 280 and 560 RPM. The microstructure in the stir zone is formed by the dynamic recrystallization (DRX) process and consists of almost equiaxed tin-rich matrix grains with a size of approx. 5-30 µm and fine particles of Cu 6 Sn 5 and SnSb phases. The temperature distribution in the FSP zone is not uniform and changes in a gradient manner.

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Effect of laser remelting on tribological properties of Babbitt alloy

Cited by 18 publications

References 25 publications

Effects of the Processing Parameters of Friction Stir Processing on the Microstructure, Hardness and Tribological Properties of SnSbCu Bearing Alloy

Effects of the Processing Parameters of Friction Stir Processing on the Microstructure, Hardness and Tribological Properties of SnSbCu Bearing Alloy

Characterization of microstructure and selected properties of SnSbCu alloy after FSP

Experimental investigations of heat generation and microstructure evolution during friction stir processing of SnSbCu alloy

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