Effect and action mechanism of ultrasonic assistance on microstructure and mechanical performance of laser cladding 316L stainless steel coating

Zhuang, Dongdong; Du, Baoshuai; Zhang, S.-H.; Tao, Wenjun; Wang, Q.; Shen, Hongyu

doi:10.1016/j.surfcoat.2022.128122

Cited by 64 publications

(17 citation statements)

References 35 publications

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“…Microstructural results present pearlite‐ferrite grain deformation due to the shearing of BB/VABB processes. An increase in the depth of affectation is reported when the VA is applied by a few microns, confirming that VA enhances the microstructure deforming rate and its homogeneity 44,45 . Pearlite lamellae breakage instead of deformation, as seen in BB, indicates a higher deformation rate at more significant penetration depths.…”

Section: Discussionmentioning

confidence: 56%

“…An increase in the depth of affectation is reported when the VA is applied by a few microns, confirming that VA enhances the microstructure deforming rate and its homogeneity. 44,45 Pearlite lamellae breakage instead of deformation, as seen in BB, indicates a higher deformation rate at more significant penetration depths. However, in BB, the lamellae are planar and stretched toward the burnishing, which shows a ductile behavior instead of the fragility present in the VABB sample.…”

Section: Micro-hardness Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Fatigue enhancement and hardening effect through ultrasonic vibration‐assisted ball‐burnishing process on AISI 1045 steel

Velázquez‐Corral,

Llumà,

Jerez‐Mesa

et al. 2023

Fatigue Fract Eng Mat Struct

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This paper aims to present a study of the effects of ball burnishing with vibration assistance on the bending fatigue endurance of cylindrical specimens subjected to bending stress and obtain the best input parameters. The specimens were burnished through six different combinations of preload force, number of passes, and vibration assistance, finding that burnishing while applying a 90‐N preload, five passes, and the addition of vibration assistance results in larger fatigue strength. In terms of roughness, it has been proved that vibration‐assisted ball burnishing reduces the mean roughness up to 90%, while enhancing the skewness and kurtosis parameters. The softening effect while deforming, caused by the vibration assistance, helped to reconstruct the surface, obtaining higher depths of affectation and hardening. Fatigue strength was improved by a 6.54% by only adding vibration assistance to the ball‐burnishing process.

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Section: Discussionmentioning

confidence: 56%

Section: Micro-hardness Resultsmentioning

confidence: 99%

Fatigue enhancement and hardening effect through ultrasonic vibration‐assisted ball‐burnishing process on AISI 1045 steel

Velázquez‐Corral,

Llumà,

Jerez‐Mesa

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…According to Figure 13 , the number and size of black unmelted B 4 C particles significantly decrease due to the ultrasonic cavitation effect that can accelerate the melting of unmelted particles [ 18 ]. Unmelted B 4 C particles decrease, followed by morphology from irregular polygons to spherical, eliminating the agglomeration of nano B 4 C powders in the molten pool to a certain extent.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, ultrasonic vibration can effectively upgrade the internal microstructure of coatings by reducing internal defects such as cracks and pores and improving powder agglomeration [ 17 ]. Zhuang et al [ 18 ] noted that the macro-forming quality of coatings can be improved by changing the ultrasonic amplitude. The ultrasonic vibration effect was optimal when the amplitude was 17.5 μm.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Properties of NbC-Reinforced Ni-Based Coatings Synthesized In Situ by Ultrasonic Vibration-Assisted Laser Cladding

et al. 2023

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This paper aims to explore the mechanism of an ultrasonic applied field on the microstructures and properties of coatings, and clarify the evolution of the molten pool under different ultrasonic frequencies. The Taguchi experimental design method was adopted in this paper. NbC-reinforced Ni-based coatings were in situ synthesized by laser cladding to investigate the effects of ultrasonic vibration process parameters on the microstructure, pore area, microhardness, and wear resistance of the cladding layer. The results show that the pore area decreases first and then increases as ultrasonic power increases from 600 to 900 W and ultrasonic frequency from 23 to 40 kHz. On the contrary, the hardness and wear resistance increase at first and then decrease. The pore area is minimized at 800 W ultrasonic power and 32 kHz ultrasonic frequency, and the hardness is maximized at 600 W ultrasonic power and 40 kHz ultrasonic frequency. Meanwhile, the highest wear resistance can be obtained when ultrasonic power is 700 W and ultrasonic frequency is 32 kHz. Based on the phase structure analysis, the cladding layer mainly consists of FeNi3, NbC, B4C, and CrB2. Ultrasonic vibration will not change the phase composition of the layer. Combined with the varying G/R value and cooling rate, the reasons for the change in grain morphology in different areas were analyzed to reveal the evolution mechanism of the molten pool under the influence of ultrasound.

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“…Using ultrasonic waves simultaneously as laser cladding is an exciting technique for refining the microstructure by increasing the solidification speed. Zhuang [17] et al applied 316 stainless steel coating as a hybrid laser-ultrasonic coating and found that ultrasonic waves with an amplitude of 17.5 μm have the best effect on increasing the mechanical properties. In a report by Li et al [15], it was confirmed that ultrasonic waves enhance crystal-to-amorphous transformation because it quickly causes amorphization of the coating at low temperature and stress.…”

Section: Introductionmentioning

confidence: 99%

The effect of ultrasonic field on the microstructure and corrosion behavior of Fe-based amorphous coating applied to selective laser melting

Taheri

Razavi

2023

Mater. Res. Express

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This study was conducted to investigate the effect of the ultrasonic field on the preparation of amorphous/crystalline Fe-based coatings. For this purpose, Fe86.3Si 5.9B3.2Cr4.6 (wt.%) powder was deposited on GTD-111 superalloy substrate with and without ultrasonic field by selective laser melting method. After coating, the corrosion behavior, microstructure, and hardness of the amorphous coating were investigated. The results showed that in conditions without ultrasonic vibration, the growth of grains starts in columnar form. At the same time, the use of an ultrasonic field inhibits columnar growth and creates equiaxed grains. In addition, the ultrasonic field increased the amorphous phase by 34.5%. This is attributed to the increased solidification rate caused by the cavitation effect. The experimental results of corrosion show that the self-corrosion current density of 6.83×10-7 A⋅cm2 is obtained due to the refinement of the microstructure and the increase of the amorphous phase. The wear results showed that the increase in the amorphous phase, as well as the decrease in the grain size, reduction in the grain ratio, and the increase in the tendency to equiaxed grains when using the ultrasonic field, reduce the coefficient of friction by 97%.

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Effect and action mechanism of ultrasonic assistance on microstructure and mechanical performance of laser cladding 316L stainless steel coating

Cited by 64 publications

References 35 publications

Fatigue enhancement and hardening effect through ultrasonic vibration‐assisted ball‐burnishing process on AISI 1045 steel

Fatigue enhancement and hardening effect through ultrasonic vibration‐assisted ball‐burnishing process on AISI 1045 steel

Microstructures and Properties of NbC-Reinforced Ni-Based Coatings Synthesized In Situ by Ultrasonic Vibration-Assisted Laser Cladding

The effect of ultrasonic field on the microstructure and corrosion behavior of Fe-based amorphous coating applied to selective laser melting

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