Wear mechanisms and hardness thresholds under repeated impact contact loading

Ren, Xianghong; Jin-hua, Zhu

doi:10.1007/s11431-016-9145-1

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…When two solids come into contact, stress and deformation are produced. The characterization of the contact behavior of solids is not only highly crucial for analyzing tribological problems such as friction, wear, and lubrication [7][8][9], but also for other technological problems such as thermal and electrical contact resistance [10][11][12]. When solids with residual stress are in contact, the residual stress in the surface layer is superimposed on the stress generated by the contact, changing the critical load of yield inception and strengthening or weakening the surface layer/substrate system.…”

Section: Introductionmentioning

confidence: 99%

Effect of Residual Stress in Surface Layer on Plastic Yield Inception

Zhou

Huang

et al. 2022

Applied Sciences

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This study aimed to acquire a comprehensive explanation on how the residual stress in the surface layer affects the contact behavior of solids. Plastic yield inception of residual stressed surface layer/substrate system during contact is simulated using the finite element method with the software ANSYS Workbench. The critical loads and locations for yield inception were acquired for contact systems with different residual stress levels and different surface layer thicknesses. Results show that the residual stress in the surface layer has little influence on the stress field in the substrate during contact. The influence of the residual stress on the critical yield load is mainly due to variations in the stress field in surface layer. A moderate compressive residual stress is preferable for increasing the critical yield load. An optimal value of compressive residual stress of 60% of the yield strength of surface layer was found to increase the critical yield load. The surface layer thickness and residual stress determine the yield inception location and the critical load of the contact system jointly.

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Section: Introductionmentioning

confidence: 99%

Effect of Residual Stress in Surface Layer on Plastic Yield Inception

Zhou

Huang

et al. 2022

Applied Sciences

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Comparative study of the current-carrying tribological properties of carbon graphite composites with different hardnesses

Liu

Zhou

et al. 2023

International Journal of Mechanical Sciences

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Effects of Travel Speed on the Microstructure and Abrasion Resistance of Hardfacing Alloys Deposited with Composite Powder Particles and Solid Wire

Yao

Gong

Cheng

et al. 2020

Metals

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Composite powder particles (CPP) preset on base metals were fused with a solid wire to form a melt by the intense heat provided by the arc. An X-ray diffractometer, scanning electron microscopy, and energy dispersive spectrometer were employed to investigate the effects of travel speed on the microstructure and abrasion resistance. It was found that the microstructure of hardfacing alloys with CPP consists of γ-Fe, M7C3, and (Ti, V) C. With an increase in the travel speed from 3.5 to 6 mm/s, the microstructure with CPP changed from a hypoeutectic to hypereutectic structure. For hardfacing alloys with CPP, the increase in the travel speed not only contributed to a reduction of the dilution ratio of base metals, but also deliberately increased the volume fraction of primary M7C3-type carbides, which indicated that the bonding function executed on powder components led to a significant improvement in abrasion resistance and increased the utilization ratio of the alloying elements. The wear mechanism of hardfacing alloys included micro-cutting of abrasive particles and micro-spalling.

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Wear mechanisms and hardness thresholds under repeated impact contact loading

Cited by 3 publications

References 14 publications

Effect of Residual Stress in Surface Layer on Plastic Yield Inception

Effect of Residual Stress in Surface Layer on Plastic Yield Inception

Comparative study of the current-carrying tribological properties of carbon graphite composites with different hardnesses

Effects of Travel Speed on the Microstructure and Abrasion Resistance of Hardfacing Alloys Deposited with Composite Powder Particles and Solid Wire

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