A gradient Al/Ni-Cr-Al layer formed by direct current pulse metal inert gas welding combined laser cladding on AZ91D magnesium alloy

Pei, Xiaolong; Li, Zhiyong; Zhang, Yingqiao; Wei, Shouzheng; Yang, Liuqing; Wang, Yongji

doi:10.1016/j.vacuum.2019.04.011

Cited by 12 publications

(3 citation statements)

References 35 publications

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“…Yue et al [35] achieved a stainless-steel coating on ZK60/SiC composite by using a two-step method, i.e., thermal spray and laser re-melting. Pei et al [55] combined direct current pulse metal inert gas welding with laser cladding. As it can be seen in Figure 9, the first stage of the methodology is a welding process, and in a second stage laser cladding has been performed on AZ91D magnesium alloy to fabricate a gradient modified coating, containing an Al-Si interlayer and a Ni-Cr-Al top layer (a scheme of this microstructure is shown in the inset in Figure 9).…”

Section: Laser Cladding and Other Techniquesmentioning

confidence: 99%

An Introduction on the Laser Cladding Coatings on Magnesium Alloys

Riquelme

Rodrigo

2021

Metals

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Magnesium alloys are a promising structural material to be used as a substitute for metals traditionally used in the automotive and aircraft sector. However, magnesium alloys have poor mechanical properties and corrosion resistance. These handicaps can be overcome through the application of coatings with improved properties. Laser cladding is a potential coating fabrication process. Furthermore, the low vaporization temperature of magnesium and the coating-substrate dilution problems increase the difficulty to coat magnesium substrates. The aim of this research is to analyze the state of art in magnesium laser cladding and investigate the effect of the most important fabrication parameters on the interaction of the different coating-substrate systems used on the mechanical properties and corrosion resistance. In addition, this work provides a guidance on laser cladding best practices for these alloys. Knowledge of how the different coating manufacturing parameters affect the final surface properties of magnesium alloys is essential for the implantation of these materials in applications for which they are currently limited.

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Section: Laser Cladding and Other Techniquesmentioning

confidence: 99%

An Introduction on the Laser Cladding Coatings on Magnesium Alloys

Riquelme

Rodrigo

2021

Metals

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“…Addressing this challenge requires the adoption of suitable methods to enhance the application prospects of Mg alloy across various industries [4]. Diverse techniques in surface engineering have been utilized to augment the surface attributes of magnesium alloys, such as plasma electrolytic oxidation (PEO) [5], physical vapor deposition (PVD) [6], micro-arc oxidation (MAO) [7], thermal spray (TS) [8], laser cladding [9], and so on. Within these methods, laser cladding is distinguished by its exceptional precision, versatility in application, capacity for precise thickness control of coatings, and benefit of rapid processing duration [10].…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Hardness and Corrosion Resistance of Al-TiC MMC Prepared by Laser Cladding on AZ31B Magnesium Alloy

Pi,

Zhi,

Chen

et al. 2024

Coatings

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Magnesium alloy is extensively used in aircraft, automobiles, and electronic industries due to its low density, high specific strength, and enhanced machinability. However, low hardness and poor corrosion resistance limit its application. In this work, an Al-TiC metal matrix composite (MMC) was prepared on AZ31B magnesium alloy via laser cladding. The effects of laser power and TiC content on the microstructure, hardness, and corrosion resistance of the MMC were investigated. The results showed that the MMC with 10% TiC had a hardness of 184 HV0.1, which was 3.5 times higher than 52 HV0.1 of the substrate. The current density of MMC with 10% TiC was 3.90 × 10−7 A/cm2, which was three orders of magnitude lower than 5.45 × 10−4 A/cm2 of the substrate. Due to more intermetallic compounds (IMCs) and TiC particles, the MMC with 30% TiC had higher hardness. The increased laser power would not change the phase composition, but it contributed to the formation of a concave crescent shape, promoted the diffusion of Mg, and induced the formation of a thicker Al3Mg2 transition layer. Modifications in the TiC concentration markedly influenced the coating’s microstructural characteristics.

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“…The ultimate tensile strength was evaluated from 164 MPa to 608 MPa when the content of carbon fibers was increased from 0 vol.% to 9 vol.%. The coatings were also fabricated on the other alloys such as copper alloys [12], aluminum alloys [13], magnesiumalloys [14] and titanium alloys [15][16][17][18][19][20] etc With respect to titanium alloys, considerable metal-based composite coatings reinforced by the ceramic particles had been synthesized on their surfaces (TaC-reinforced TiNi/Ti 2 Ni matrix [15], ZrO 2 reinforced TiNi matrix [16], TiC reinforced α-Ti matrix [17], TiB/TiC/TiNreinforced α-Ti matrix [18] and so on [19,20]. Wear resistance of these coatings is all greatly improved when compared with that of titanium alloys due to their very high hardness of about 750-1400 HV resulting from a combination of the refinement/solution/dispersion strengthening effects.…”

Section: Introductionmentioning

confidence: 99%

Investigation into corrosion and wear behaviors of laser-clad coatings on Ti6Al4V

Zhang

Jiang

et al. 2020

Mater. Res. Express

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TiAlCoCr x FeNihigh-entropy alloys (HEAs) coatings were fabricated on the surface of Ti6Al4V by laser cladding. Their microstructural evolution with the increase in x value (x=0, x=1.0, x=2.0) was investigated in detail. Besides that, the investigation into the effects of the Cr content on their corrosion behaviors and mechanical properties (in terms of hardness and wear resistance) was also carried out comprehensively. The results indicated that two kinds of phases (a solid solution with thehexagonal close-packed (HCP) structureand Ti 2 Ni) were synthesized in the coatings, and the HCP content was gradually increased with the increase in x accompanied with the decrease in Ti 2 Ni content. A HEA coating only composed of single HCP was successfully prepared when x reached 2.0. The electrochemical and immersion tests all confirmed that the coating with x=2.0demonstrated the most excellent corrosion resistance in a0.1 mol·L −1 HCl solution from different aspects including corrosion tendency and corrosion rate without the applied potential, the formation difficult/stability of the passive film and the dissolution rate in the passive state, and corrosion surface morphology. The averagemicrohardness values of the coatings weregraduallyincreasedfrom 656HV 0.2 to 800 HV 0.2 with increasing xfrom 0 to 2.0, which wereabout double that of the substrate (350 HV 0.2 ). Wear resistance of the coatings also exhibited the upward tendency with increasing the x values (0.562 mm 3 at x=2.0, 0.640 mm 3 at x=1.0, 0.641 mm 3 at x=0 and 1.419 mm 3 for the substrate). More Cr addition into the cladding material will contribute to the formation of a HEA coating composed of single HCPwith excellent corrosion and wear resistance.

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A gradient Al/Ni-Cr-Al layer formed by direct current pulse metal inert gas welding combined laser cladding on AZ91D magnesium alloy

Cited by 12 publications

References 35 publications

An Introduction on the Laser Cladding Coatings on Magnesium Alloys

An Introduction on the Laser Cladding Coatings on Magnesium Alloys

Microstructure, Hardness and Corrosion Resistance of Al-TiC MMC Prepared by Laser Cladding on AZ31B Magnesium Alloy

Investigation into corrosion and wear behaviors of laser-clad coatings on Ti6Al4V

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