Study on the rolling friction and wear properties of surface densified powder metallurgy Fe-2Cu-0.6C material

Liu, Xiao; Zheng, Yong; Guo, Yanglong; Kong, Huijun

doi:10.1088/2051-672x/ab58b8

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…These defects were formed by adhesive wear, and also related to the chemical reaction between rolling oil and active metal surface. The detailed magnification showed that copper here was fragmented, which further defined that areas with casting defects were more likely to stick [25]. The corresponding EDS analysis is shown in figures 5(f)-(h).…”

Section: Microstructure Of Rolled Stripsmentioning

confidence: 90%

Exploration on tribological behaviour of coumarin as copper rolling oil additive through surface characterization

Tang

Sun

Zhao

et al. 2020

Surf. Topogr.: Metrol. Prop.

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Tribological performance of coumarin in copper rolling oil was studied by four-ball tests and cold rolling tests. Then a systemic investigation on surface topography and surface chemistry of rolled strips was performed by field emission scanning electron microscope (FE-SEM), laser scanning confocal microscopy (LSCM), x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS) and Raman spectroscopy (Raman). Results showed that coumarin was a kind of potential lubrication additive. The average friction coefficient (AFC) and wear scar diameter (WSD) were reduced by 30.2% and 30.1%, respectively, when the optimum concentration of coumarin (2.0 wt%) was added in copper rolling oil. Meanwhile, as the formation of tribofilm during rolling process, the nonuniform deformation and adhesive wear were effectively inhibited. Thinner copper strips with fine surface quality were obtained. The surface average roughness (Sa) of rolled copper strips was reduced by up to 68.8%. Surface characterization showed that the carbonyl group in coumarin molecule connected to Cu atoms with its molecular plane vertical or tilted to the metal surface. Besides, thermal analysis disclosed that this tribofilm had negligible surface residuals, especially when coumarin concentration was lower than 3.0 wt%.

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Section: Microstructure Of Rolled Stripsmentioning

confidence: 90%

Exploration on tribological behaviour of coumarin as copper rolling oil additive through surface characterization

Tang

Sun

Zhao

et al. 2020

Surf. Topogr.: Metrol. Prop.

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“…They concluded that there was a reduction in friction and rolling resistance. In the low load application, the plowing and delaminations were observed whereas, at high load pits and cracks were initiated [140]. Guo et al have studied the fabrication and tribological behavior of iron-based porous bearings.…”

Section: Tribology In Bearingsmentioning

confidence: 99%

Hybrid and electric vehicle tribology: a review

Hemanth¹,

Ananthapadmanabha²

2021

Surf. Topogr.: Metrol. Prop.

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This comprehensive review article provides a cumulative insight into the tribology and the surface topography of the components of the electric vehicles (EV) and hybrid electric vehicles (HEV) that are subjected to friction and wear under their conventional operation. The comparison between the components that are native to EV and HEV and components that are common for both vehicle types are discretely discussed. The overall influence of such a tribology-critical component on the life and efficiency of the EV and HEV is indicated in this article as well. Identification of the research gaps in the key areas paves an avenue to channel the research and focus upon improving the efficiency of EV and HEV by improvising the design, materials, power harness, and lubrication techniques. Finally, the future scope of the global EV and HEV markets are discussed to signify the importance of the studies on the tribology of the trending automobile field. RECEIVED

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“…The high-hardness surface produced by machining forces the crack initiation site closer to the surface during wear, and the residual compressive stress inhibits the rate of crack expansion, considered as the main reason for the enhanced wear resistance. Liu et al [13,14] employed SBP on the Fe-2Cu-0.6C powder metallurgical material to produce simultaneous fine crystallization and densification of the surface layer, obtaining a high-quality surface layer with a surface hardness of 330 HV0.01 and a depth of 335 μm in the densification layer. The rolling wear test showed that SBP changes the wear mechanism, in which the crack initiation position in the machined sample is closer to the surface, and the crack length is shorter, reducing the wear amount by 50%.…”

Section: Introductionmentioning

confidence: 99%

Research on the mechanism of the two-dimensional ultrasonic surface burnishing process to enhance the wear resistance for aluminum alloy

Zhou,

Zheng,

et al. 2023

Friction

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The gradient nanostructure is machined on the aluminum (Al) alloy by the two-dimensional ultrasonic surface burnishing process (2D-USBP). The mechanism of why the gradient nanostructure enhances wear resistance is investigated. The mechanical properties and microstructure characterization for the gradient nanostructure are performed by operating a nanoindenter, transmission electron microscopy (TEM), and electron backscattered diffraction (EBSD). Dry wear tests are performed on the samples before and after machining to evaluate the wear resistance and mechanisms. The effect of the gradient nanostructure on the wear resistance is explored by developing the crystal plasticity (CP) finite element and molecular dynamics (MD) models. The characterization results show that the 2D-USBP sample prepared a gradient structure of ∼600 µm thick on the aluminum surface, increasing the surface hardness from 1.13 to 1.71 GPa and reducing the elastic modulus from 78.84 to 70.14 GPa. The optimization of the surface microstructure and the increase of the mechanical properties effectively enhance the wear resistance of the sample, with 41.20%, 39.07%, and 54.58% of the wear scar areas for the 2D-USBP treated samples to the original samples under 5, 10, and 15 N loads, respectively. The gradient nanostructure hinders the slip of dislocations inside the sample during the wear process and reduces the size and scope of plastic deformation; meanwhile, the resistance to deformation, adhesion, and crack initiation and propagation of the sample surface is improved, resulting in enhanced wear resistance.

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Study on the rolling friction and wear properties of surface densified powder metallurgy Fe-2Cu-0.6C material

Cited by 7 publications

References 21 publications

Exploration on tribological behaviour of coumarin as copper rolling oil additive through surface characterization

Exploration on tribological behaviour of coumarin as copper rolling oil additive through surface characterization

Hybrid and electric vehicle tribology: a review

Research on the mechanism of the two-dimensional ultrasonic surface burnishing process to enhance the wear resistance for aluminum alloy

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