Effect of ultrasonic vibration on the microstructure and microhardness of laser cladding Fe-based crystalline/amorphous composite coatings

Song, Haolun; Jiang, Fengchun; Guo, Chunhuan; Sun, Qizhen; Li, Haixin; Dou, Xiankang; Li, Liyu; Diao, Mingxia; Zhang, Zhichao

doi:10.1016/j.matlet.2022.133780

Cited by 18 publications

(2 citation statements)

References 10 publications

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“…Zhao et al [19], by applying an ultrasonic field when coating IN625 on GTD-111, reduced the porosity, grain size, and dilution of the coating and increased a penchant for designing equiaxed grains in the coating. By applying an ultrasonic field, Song et al [20] increased the amorphous phase by 1.4% in the processing of the Fe-base alloy (Fe88.83Si6.21B2.51Cr2.4) via laser cladding. Wang et al [21] reported the simultaneous application of ultrasonic field with laser cladding as the cause of the uniform distribution of TiC particles in IN718 and increased wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure of NbMoTaTiNi Refractory High-Entropy Alloy Coating Fabricated by Ultrasonic Field-Assisted Laser Cladding Process

Zhao,

Taheri,

Shirvani

et al. 2023

Coatings

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Refractory high-entropy alloys (RHEAs) contain alloying elements with a high melting point, promising high-temperature applications due to their unique properties. In this work, laser cladding is used to prepare RHEAS based on NbMoTaTiNi. At the same time as laser cladding, the ultrasonic field is used, and then the microstructural characteristics, grain size, residual stress, wear, and hardness of the coating are evaluated. The results show that the coating is biphasic and includes the γ (Ni) and NbMoTaTiNi phase. The NbMoTaTiNi phase had a uniform distribution throughout the coating when the ultrasonic field was applied, so that when the ultrasonic field was not used, the NbMoTaTiNi powder, in addition to spreading uniformly, had the un-melting of large particles. This caused an increase in the residual tension of the coating. The conversion of columnar grains to the equiaxed, and the reduction in structural defects, were other characteristics of using the ultrasonic field. The formation of equiaxed grains with zigzag grain boundaries reduced the friction coefficient, wear volume loss, and the wear rate of the coating applied with ultrasonic.

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Section: Introductionmentioning

confidence: 99%

Microstructure of NbMoTaTiNi Refractory High-Entropy Alloy Coating Fabricated by Ultrasonic Field-Assisted Laser Cladding Process

Zhao,

Taheri,

Shirvani

et al. 2023

Coatings

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“…Ultrasonic vibration is used as an auxiliary means of laser forming, and its action principles on the molten pool include the cavitation effect [6], acoustic-streaming effect [7], and thermal effect [8]. It has shown great potential in reducing the porosity as well as optimizing the aspect ratio and mechanical properties [9,10].…”

Section: Introductionmentioning

confidence: 99%

The Influences of Ultrasonic Vibrations on Laser Cladding Ni60/WC-TiO2+La2O3 Composite Coating

Huang,

Chen,

Jiang

et al. 2023

Materials

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The optimal process parameters of ultrasonic-assisted processing were studied to further improve the molding quality and mechanical properties of Ni60/WC-TiO2+La2O3 composite coating. A single-factor experiment was used to explore the influences of ultrasonic vibration frequencies on Ni60/WC-TiO2+La2O3 composite coating. The microstructure, elemental composition, phase composition, hardness, and wear resistance of the coating were studied using scanning electron microscopy (SEM), an X-ray diffractometer (XRD), an energy spectrometer, a microhardness meter, a friction and wear tester, and other equipment. Ultrasonic vibrations significantly improved the problems of pores in the coating, and the porosity was reduced from 0.13 to 0.014%. When the vibration frequency was 32 kHz in the experiment, the aspect ratio of the coating was optimized from 2.06 to 2.48, the dilution rate increased from 5.60 to 5.79%, the hardness increased from 960.25 to 988.45 HZ1.0, and the friction coefficient was reduced from 0.34 to 0.27. The coating performance was significantly improved, and the research results provide a reference for preparing excellent Ni60/WC-TiC+La2O3 composite coating.

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Microstructure and tribocorrosion properties of Fe-based amorphous composite coatings fabricated by laser cladding

Wei,

Zheng,

et al. 2024

J Mater Sci

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Effect of ultrasonic vibration on the microstructure and microhardness of laser cladding Fe-based crystalline/amorphous composite coatings

Cited by 18 publications

References 10 publications

Microstructure of NbMoTaTiNi Refractory High-Entropy Alloy Coating Fabricated by Ultrasonic Field-Assisted Laser Cladding Process

Microstructure of NbMoTaTiNi Refractory High-Entropy Alloy Coating Fabricated by Ultrasonic Field-Assisted Laser Cladding Process

The Influences of Ultrasonic Vibrations on Laser Cladding Ni60/WC-TiO2+La2O3 Composite Coating

Microstructure and tribocorrosion properties of Fe-based amorphous composite coatings fabricated by laser cladding

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