Laser alloying with Fe–B<sub>4</sub>C–Ti on AA6061 for improved wear resistance

Chi, Yiming; Meng, Xiaoxi; Dou, Jinhe; Yu, Huijun; Chen, Chuanzhong

doi:10.1080/02670844.2021.1916862

Cited by 5 publications

(3 citation statements)

References 37 publications

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“…Although the diffraction peaks were not salient, small amounts o Fex(C,B) phases were also detected in all samples as reaction products. Additionally, th peaks of TiB2 and the matrix (α-Fe, AlxFe) overlap significantly, which is also observed in the references [21,28,29]. This situation prevents us from performing certain XRD quanti tative analyses, such as estimating the content ratio of different phases based on peak in tensities or using Scherrer's equation to calculate the grain size by analyzing the peak broadening of XRD peaks.…”

Section: X-ray Results Of Coatingsmentioning

confidence: 95%

Effects of Aluminum Addition on Microstructure and Properties of TiC-TiB2/Fe Coatings In Situ Synthesized by TIG Cladding

Xiao

Zhao

et al. 2023

Materials

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This study focuses on the synthesis of TiC-TiB2/Fe coatings with varying amounts of aluminum (Al) using tungsten inert gas (TIG) cladding and investigates the impact of Al addition on microstructure refinement and performance enhancement of the coatings. The coatings were prepared on a mild steel substrate using TIG cladding. X-ray diffraction (XRD) analysis revealed the presence of TiC, TiB2, AlxTi, and AlxFe phases in the coatings. Scanning electron microscopy (SEM) images showed that the addition of Al improved the microstructure, reducing defects and enhancing the distribution of reinforcing phases within the coatings. The particle size of the reinforcing phases was significantly refined by the addition of Al. The micro-hardness of the coatings was significantly higher than that of the substrate, with the maximum micro-hardness of the coating reaching 955.5 ± 50.7 HV0.1, approximately six times that of the substrates. However, excessive Al addition led to a reduction in hardness due to a decrease in the quantity of hard phases. The wear tests showed that all the coatings had lower wear loss compared to the substrate material, with the wear loss initially decreasing and then increasing with the increasing Al content. Samples with a 28.57 wt.% Al addition exhibited the best wear resistance, with approximately 16.8% of the wear volume loss compared to mild steel under the same testing conditions, attributed to the optimal combination of reinforcement phase quantity and matrix properties.

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Section: X-ray Results Of Coatingsmentioning

confidence: 95%

Effects of Aluminum Addition on Microstructure and Properties of TiC-TiB2/Fe Coatings In Situ Synthesized by TIG Cladding

Xiao

Zhao

et al. 2023

Materials

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“…Laser cladding, particularly at higher speeds, is popular in additive manufacturing [4][5][6][7]. Comprehensive studies have been carried out on the surface modification of various materials using laser alloying, for example, on cast irons [8][9][10], steels [11,12], non-ferrous metals [13][14][15], and alloys [16][17][18]. Furthermore, the mechanisms of wear resistance of laser-alloyed coatings have been studied in references [8,[11][12][13], and the corrosion resistance of metallic materials with different laser-alloyed coatings investigated in [19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Properties of Laser-Alloyed Stainless Steel Coatings on the Surface of Gray Cast Iron Discs

Wang,

Hao,

Zhou

et al. 2024

Lubricants

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The influence of laser-alloyed stainless steel coatings on the properties of the surfaces of cast iron discs, such as friction-induced vibration and noise, friction coefficient, residual stress, hardness, and corrosion resistance, was investigated in this study. The experimental results show that after laser alloying, the surface hardness of the cast iron discs increased significantly. The residual stresses on the surfaces of the laser-alloyed discs changed from tensile to compressive residual stresses, while any compressive residual stresses increased by more than six times. Most of the laser-alloyed discs demonstrated better performance in friction-induced vibration and noise damping and friction reduction. Metallographic observation and XRD (X-ray diffraction) analysis results show that the laser-alloyed layer is mainly a mixture of acicular martensite and dendritic material, while the phase composition of laser-treated discs is mainly martensitic, [Fe, Ni], Fe3Si, Cr23C6, and austenite, which plays a significant role in the improvement of the properties of the laser-alloyed cast iron in physics, tribology and corrosion resistance. This research has significance for the laser surface treatment of various cast irons and steels, which is an increasingly important manufacturing technology in the vehicle friction brake industry.

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“…However, aluminium alloys possess a relatively low hardness and poor wear resistance as compared with steel or titanium alloys, which severely restricts their widespread industrial applications. Many coatings including transition metals, ceramics particles, amorphous and high entropy alloys have been applied to improve the performance and service life of the alloys [3][4][5]. Thermal spraying techniques, such as plasma spraying and high-velocity oxygen fuel (HVOF) spraying, are commonly employed to synthesize these coatings.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties of molybdenum-coated aluminium via laser cladding

Zheng

Chen

2023

Surface Engineering

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High-quality molybdenum coating has been successfully deposited on the pure aluminium substrate by high-velocity oxygen fuel spraying and subsequent laser remelting and laser cladding process. The microstructure, bonding strength, micro-hardness and wear resistance of the coating were systematically investigated. Results showed that the obtained coating exhibits a good metallurgical bonding interface as well as a dense microstructure with Al 8 Mo 3 , AlMo 3 and Al 5 Mo phases, which results in the significant improvement of the mechanical properties of the coating. The bonding strength is increased from 11 ± 1 to 57 ± 4 MPa after laser treatment. Micro-hardness of the coating (480 ± 30 HV) is observed to be increased by about 70% in comparison with the as-sprayed coating (281 ± 8 HV). The wear resistance of the Mo coating was also increased about five to six times by the laser remelting and cladding process.

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Laser alloying with Fe–B₄C–Ti on AA6061 for improved wear resistance

Cited by 5 publications

References 37 publications

Effects of Aluminum Addition on Microstructure and Properties of TiC-TiB2/Fe Coatings In Situ Synthesized by TIG Cladding

Effects of Aluminum Addition on Microstructure and Properties of TiC-TiB2/Fe Coatings In Situ Synthesized by TIG Cladding

Properties of Laser-Alloyed Stainless Steel Coatings on the Surface of Gray Cast Iron Discs

Enhanced mechanical properties of molybdenum-coated aluminium via laser cladding

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Laser alloying with Fe–B4C–Ti on AA6061 for improved wear resistance

Cited by 5 publications

References 37 publications

Effects of Aluminum Addition on Microstructure and Properties of TiC-TiB2/Fe Coatings In Situ Synthesized by TIG Cladding

Effects of Aluminum Addition on Microstructure and Properties of TiC-TiB2/Fe Coatings In Situ Synthesized by TIG Cladding

Properties of Laser-Alloyed Stainless Steel Coatings on the Surface of Gray Cast Iron Discs

Enhanced mechanical properties of molybdenum-coated aluminium via laser cladding

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Laser alloying with Fe–B₄C–Ti on AA6061 for improved wear resistance