Experimental investigation on ultrasonic shot peening of WC-Co alloy

Zhu, Shengjian; Hu, Yifeng; Zhang, Xuehui; Zou, Yangjun; Ahmad, Tahir; Zhang, Wenglong; Tang, Fuqian; Liang, Tongxiang

doi:10.1080/10426914.2020.1779943

Cited by 25 publications

(6 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of tool coating treatments is an important method for improvement of comprehensive performance. Its pivotal role is to combine the features of the metal substrate and the hard coating, thereby maintaining the toughness of the metal substrate while adding hardness and other characteristics of the coating [1]. Many studies have reported coating preparations on tool surfaces because a coating with excellent performance can fully protect the tool and significantly reduce the wear degree of the tool [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Low-Energy Nitrogen Ion Implantation on Friction and Wear Properties of Ion-Plated TiC Coating

et al. 2021

View full text Add to dashboard Cite

To further improve the performance of the coated tools, we investigated the effects of low-energy nitrogen ion implantation on surface structure and wear resistance for TiC coatings deposited by ion plating. In this experiment, an implantation energy of 40 keV and a dose of 2 × 1017 to 1 × 1018 (ions/cm2) were used to implant N ions into the TiC coatings. The results indicate that the surface roughness of the coating increases first and then decreases with the increase of ion implantation dose. After ion implantation, the surface of the coating will soften and reduce the hardness, and the production of TiN phase will gradually increase the hardness. Nitrogen ion implantation can reduce the friction coefficient of the TiC coating and improve the friction performance. In terms of wear resistance, the coating with an implant dose of 1×1018 ions/cm2 has the greatest improvement in wear resistance. Tribological analysis shows that the improvement in the performance of TiC coatings implanted with N ions is mainly due to the effect of the lubricating implanted layer. The implanted layer mainly exists in the form of amorphous TiC, TiN phase, and sp2C–C phase.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Low-Energy Nitrogen Ion Implantation on Friction and Wear Properties of Ion-Plated TiC Coating

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The R s and R f values of CG and NC alloy 690 were similar, indicating that the solution components and corrosion production of the two samples were basically identical. The larger the R ct value is, the more difficult for the charge to pass through the two-phase interface between metal substrate and solution will be, indicating that the corrosion rate is lower [38,39]. It was observed that the NC alloy 690 presented a higher R ct than CG alloy 690, demonstrating that the USRT could improve the corrosion resistance.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Corrosion behaviour of nanocrystallines alloy 690 at high-temperature and high-pressure in simulated PWR secondary environment

Li¹,

Liu²,

Liu³

et al. 2021

Surf. Topogr.: Metrol. Prop.

Self Cite

View full text Add to dashboard Cite

The influence of ultrasonic surface rolling treatment (USRT) on the corrosion behaviour of nanocrystallines (NC) alloy 690 at high temperature and high pressure in simulated PWR secondary environment was performed by using Raman spectrometer, X-ray photoelectron spectrometer (XPS) and scanning electron microscopy (SEM). After USRT, the average size and the thickness of NC surface layer could reach 55 nm and 1 μm, respectively. Electrochemical measurements showed that the oxide film on the surface of NC alloy 690 was denser and more complete compared with coarse grained (CG) samples. The corrosion tests in ethanolamine (ETA) solution illustrated that the fine oxide particles were evenly distributed on the oxide film of NC alloy 690. The corrosion potential increased from −364 mV to −229 mV, while the corrosion current density dropped from 18.07 × 10−8 mm2 A cm−2 to 8.842 × 10−8 mm2 A cm−2 after USRT. By analysis, the inner layer of oxide film consisted of Cr2O3, NiFe2O4, and FeCr2O4, while Ni hydroxides formed the major part of the outermost layer of film. A growth model of oxide films on alloy 690 at high-temperature and high-pressure in stimulated PWR secondary environments was proposed and discussed.

show abstract

“…Additionally, electrochemical machining requires specialized equipment and specific electrolyte fluids, which can result in relatively higher equipment and material costs. Surface mechanical deformation enhancement includes ultrasonic shot peening 11 and rolling extrusion 12 . Ultrasonic shot peening can significantly increase the residual compressive stress on the surface of the part.…”

Section: Introductionmentioning

confidence: 99%

Study on microstructure of 42CrMo steel by ultrasonic surface rolling process

Wang,

Tian

et al. 2023

Sci Rep

View full text Add to dashboard Cite

To explore the microstructure formation mechanism of 42CrMo steel under the strengthening of ultrasonic surface rolling process (USRP), the combination of theoretical analysis and experiment was used to conduct in-depth research on USRP. Firstly, according to contact mechanics and Hertz contact theory, the calculation model of contact stress distribution and elastoplastic strain between the rolling ball and the part during USRP is obtained. Secondly, the USRP processing test was carried out by single-factor experimental design method, and the microstructure of 42CrMo steel after USRP was analyzed by LEXT OLS5100 3D laser surface topography instrument and VEGA3 tungsten filament scanning electron microscopy, which found that with an increase in static pressure, residual stress and plastic strain gradually increase, the hardness firstly increases and then decreases, while surface roughness exhibits an initial decrease followed by an increase. The results show that USRP produces violent plastic deformation inside the material under the superposition of high-frequency impact and static pressure, at the same time, it refines the grains, so as to improve the surface performance of the part and improve its fatigue resistance.

show abstract

Experimental investigation on ultrasonic shot peening of WC-Co alloy

Cited by 25 publications

References 38 publications

Effect of Low-Energy Nitrogen Ion Implantation on Friction and Wear Properties of Ion-Plated TiC Coating

Effect of Low-Energy Nitrogen Ion Implantation on Friction and Wear Properties of Ion-Plated TiC Coating

Corrosion behaviour of nanocrystallines alloy 690 at high-temperature and high-pressure in simulated PWR secondary environment

Study on microstructure of 42CrMo steel by ultrasonic surface rolling process

Contact Info

Product

Resources

About