Effect of Y2O3 Addition on Microstructure and Properties of Laser Cladded Al-Si Coatings on AZ91D Magnesium Alloy

Wan, Xiaofeng; Tian, Chuang; Li, Yi; Juan, Zhou; Qian, Shuqu; Su, Lihong; Wang, Li

doi:10.3390/ma16010338

Cited by 8 publications

(4 citation statements)

References 44 publications

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“…This has a napping effect on the grain boundary and is conducive to refining the grain. Xiaofeng Wan et al [21] reported that during the laser cladding of Al-Si coatings, Y element was found to be concentrated at the grain boundaries, which inhibited grain growth by nailing the grain boundaries. This is also an important reason why Y 2 O 3 can be a refined grain after being added to the coatings.…”

Section: Phase Composition and Microstructure Of A100-y2o3 Cladding C...mentioning

confidence: 99%

Study on Microstructure and Mechanical Properties of A100-Y2O3 Coatings on Low-Carbon Steel by Laser Cladding

Zhou,

Han,

Zhu

et al. 2023

Coatings

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To enhance the microhardness and wear resistance of low-carbon steel, laser cladding was employed to create A100-Y2O3 cladding coatings that remained free of cracks. The phase composition, microstructure, and element distribution of these coatings were examined using XRD and SEM analyses, respectively. The microhardness and wear resistance of the A100-Y2O3 cladding coatings were tested by an HXS-1000 A type digital liquid crystal intelligent microhardness tester and an ML-10 friction and wear tester, respectively. The XRD results show that the addition of Y2O3 did not change the phase composition of the A100-Y2O3 cladding coatings. With the addition of Y2O3, the grains of the A100-Y2O3 cladding coatings are finer compared with those of the A100-0%Y2O3 cladding coating. The upper part of the A100-Y2O3 cladding coatings were composed of fine equiaxed grains. The average microhardness of the A100-0%Y2O3 cladding coatings was 532.489 HV. With the addition of Y2O3, the microhardness of the A100-Y2O3 cladding coatings was obviously improved, and the average microhardness of A100-1.5%Y2O3 coating reached 617.290 HV. The A100-Y2O3 cladding coatings were reduced, and the worn surface became relatively smooth owing to the addition of Y2O3. The addition of Y2O3 significantly improved the wear resistance of the A100-Y2O3 cladding coatings.

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Section: Phase Composition and Microstructure Of A100-y2o3 Cladding C...mentioning

confidence: 99%

Study on Microstructure and Mechanical Properties of A100-Y2O3 Coatings on Low-Carbon Steel by Laser Cladding

Zhou,

Han,

Zhu

et al. 2023

Coatings

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“…However, widespread use of magnesium alloy is limited due to its poor wear and corrosion resistance [4][5][6]. Researchers have tried different approaches to improve the properties of magnesium alloy through surface modification [7][8][9][10]. Laser cladding utilizes a precise laser beam to deposit a coating with desired properties on a substrate, and this technique has developed rapidly in recent years owing to its many particular advantages [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Simulations and Experiments on the Microstructure and Property Evolution of In Situ TiC+Al3Ti-Reinforced Aluminum Coatings on AZ91D Magnesium Alloy

Yang

et al. 2023

Crystals

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With the development of computational thermodynamics, it is possible to design a material based on its simulated microstructure and properties before practical operations. In order to improve the surface properties of AZ91D magnesium alloy, Jmatpro was used in this study to design an alloy system with in situ TiC+AlTi3-reinforced aluminum coatings. The Gibbs free energy, hardness, and phase diagrams of aluminum coatings with different ratios of Ti to B4C were simulated. According to the simulation results, TiB2, TiC, Al3Ti_DO22, and Al4C3 were formed in the coating while TiB2, TiC, Al3Ti_DO22, Al4C3, and Al3Mg2 were formed in the transition zone between the base metal and the coating. Based on the simulation results, different amounts of Ti were used with B4C (the ratios were 3:1, 4:1, 5:1, and 6:1) to fabricate TiC+Al3Ti reinforced aluminum coatings on AZ91D magnesium alloy via laser cladding. The microstructure and phase composition of the coating were studied using scanning electron microscopy (SEM) incorporated with energy- dispersive spectrometry (EDS) and X-ray diffraction (XRD). The results indicated that intermetallic phases, such as AlTi3(C, N)0.6, AlMg, Al3Mg2, Al3Ti, and TiC were formed in the coatings. As the Ti content increased, the content of Al3Ti increased and the content of TiC decreased in the coatings, which is consistent with the simulation results. The average hardness of the coatings was approximately four to five times that of the magnesium alloy substrate, and the corrosion current density of the coatings was around 2.5 × 10−6, which is two orders of magnitude lower than that of AZ91D magnesium alloy.

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“…Potential new specialized applications of magnesium alloys necessitate the search for adequate, effective surface engineering solutions. Among such presently investigated modern solutions one could mention Ni-diamond micro-composites coatings [4], lasercladded coatings [5] and new PEO treatment variants [6]. The production of surface layers of nitrides on magnesium alloys of such metals as aluminum [7], chromium [8,9], titanium [8,10,11], zirconium [12][13][14], and their composites [15,16], and other advanced nitride-based solutions [17][18][19], due to the high corrosion and tribological resistance, seems to be also a promising direction, systematically explored by various researchers.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Wear-Resistant Composite Zirconium Nitride Layers Produced on the AZ91D Magnesium Alloy in Hybrid Process Using Hydrothermal Treatment

Tacikowski,

Karpiniak,

Marciniak

et al. 2023

Crystals

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The aim of the study was to investigate the possibility of an effective improvement in performance properties, including corrosion and wear resistance of magnesium AZ91D alloy using a surface engineering solution based on zirconium nitride composite surface layers produced on AZ91D alloy in a hybrid process using hydrothermal final sealing. Research results show that the formation of a composite ZrN-Zr-Al-type zirconium nitride layer on zirconium and aluminum sublayers results in a significant increase in resistance to corrosion and wear. The decrease in chemical activity of the sealed zirconium nitride composite layer on AZ91D, expressed by the displacement of the corrosion potential in the potentiodynamic test, reaches an outstanding value of ΔEcorr = 865 mV. The results of the SIMS chemical composition analysis of the layers indicate that the sealing of the composite layer occurs at the level of the aluminum sublayer. The composite layer reduces wear in the Amsler roll on block test by more than an order of magnitude. The possibility of effective sealing of zirconium nitride layers on the AZ91D alloy demonstrated in this study, radically increases the corrosion resistance and combined with the simultaneous mechanical durability of the layers, is of key importance from the point of view of new perspectives for application in practice.

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Effect of Y2O3 Addition on Microstructure and Properties of Laser Cladded Al-Si Coatings on AZ91D Magnesium Alloy

Cited by 8 publications

References 44 publications

Study on Microstructure and Mechanical Properties of A100-Y2O3 Coatings on Low-Carbon Steel by Laser Cladding

Study on Microstructure and Mechanical Properties of A100-Y2O3 Coatings on Low-Carbon Steel by Laser Cladding

Simulations and Experiments on the Microstructure and Property Evolution of In Situ TiC+Al3Ti-Reinforced Aluminum Coatings on AZ91D Magnesium Alloy

Corrosion and Wear-Resistant Composite Zirconium Nitride Layers Produced on the AZ91D Magnesium Alloy in Hybrid Process Using Hydrothermal Treatment

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