Core-shell structural iron based metal matrix composite powder for laser cladding

Wang, Zhen; Tan, Mixue; Wang, Jiang; Zeng, Jing; Zhao, Fengjun; Xiao, Xinyu; Xu, Shurong; Liu, Bo; Gong, Lian; Sui, Qingxuan; Zhang, Ruizhi; Han, Bin; Liu, Jun

doi:10.1016/j.jallcom.2021.160127

Cited by 24 publications

(5 citation statements)

References 32 publications

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“…During the ball milling process, through the continuous collision and extrusion between the powder and the steel ball, the Al 2 O 3 particles with a smaller particle size will be squeezed into the surface of the CoNiCrAlY particles to form a core-shell structure. Therefore, in general, the larger the difference in particle size distribution and hardness between the core material and the shell material, the easier it is to obtain the core-shell structured powder [28,29]. Literature studies have shown that the ball milling process parameters have a great influence on the integrity of the core-shell structured powder [25,28].…”

Section: Microstructure Of the Core-shell Structured Powdermentioning

confidence: 99%

“…Therefore, in general, the larger the difference in particle size distribution and hardness between the core material and the shell material, the easier it is to obtain the core-shell structured powder [28,29]. Literature studies have shown that the ball milling process parameters have a great influence on the integrity of the core-shell structured powder [25,28]. In our previous work, we have optimized the mechanical ball milling process parameters through orthogonal experiments [25].…”

Section: Microstructure Of the Core-shell Structured Powdermentioning

confidence: 99%

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Corrosion Behavior of the CoNiCrAlY-Al2O3 Composite Coating Based on Core-Shell Structured Powder Design

et al. 2021

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The oxidation of the metal powder during the thermal spraying process usually leads to significant deterioration of the microstructure and performance of the coating. In order to isolate the metal powder from oxygen during the spraying process, the CoNiCrAlY-Al2O3 core-shell structured powder with Al2O3 as the shell was designed in this study. The influence of the core-shell structured powder on the microstructure and corrosion resistance of the HVOF coating has been studied in detail. The results show that the temperature field of the molten CoNiCrAlY powder during the spraying process is significantly changed by the Al2O3 shell. The poor deformability of the CoNiCrAlY-Al2O3 droplets leads to an increase in the porosity and unmelted particles of the coating. In addition, the significant difference is that the coating also maintains a high content of β-NiAl phase. The lower oxide content in the CoNiCrAlY-Al2O3 coating indicates that the core-shell structured powder significantly inhibits the oxidation of the CoNiCrAlY core powder during the spraying process. The CoNiCrAlY-Al2O3 coating exhibits high corrosion potential, passive film resistance, charge transfer resistance, and low corrosion current density in 3.5 wt.% NaCl solution, indicating that the coating has excellent corrosion resistance.

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Section: Microstructure Of the Core-shell Structured Powdermentioning

confidence: 99%

Section: Microstructure Of the Core-shell Structured Powdermentioning

confidence: 99%

Corrosion Behavior of the CoNiCrAlY-Al2O3 Composite Coating Based on Core-Shell Structured Powder Design

et al. 2021

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“…The small microstructure length of the eutectic structure matches the critical crack size, enabling the possibility of crack deflection at the phase boundary. Another study by Wang et al [151] involved the preparation of a core-shell-structured composite powder consisting of 420 stainless steel powder and nano WC-Co particles using high-energy ball milling. The composite powder exhibited excellent sphericity and fluidity, making it highly suitable for laser cladding (Figure 6e).…”

Section: Other Methodsmentioning

confidence: 99%

Crack Formation Mechanisms and Control Methods of Laser Cladding Coatings: A Review

Li¹,

Huang²,

Yi³

2023

Coatings

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Laser cladding, a novel surface treatment technology, utilizes a high-energy laser beam to melt diverse alloy compositions and form a specialized alloy-cladding layer on the surface of the substrate to enhance its property. However, it can generate substantial residual stresses during the rapid cooling and heating stages, due to inadequate selection of cladding process parameters and disparities in thermophysical properties between the clad layer and substrate material, leading to the formation of various types of cracks. These cracks can significantly impact the quality and performance of the coating. This paper presents a comprehensive review of crack types and their causes in laser cladding coatings, and identifies that three primary sources of residual stresses, thermal stress, organizational stress, and restraint stress, are the fundamental causes of crack formation. The study proposes several strategies to control coating cracks, including optimizing the coating layer material, refining the coating process parameters, incorporating heat treatment, applying auxiliary fields, and utilizing numerical simulations to predict crack initiation and propagation. Additionally, the paper summarizes crack control methods for emerging structural materials and novel preparation processes. Lastly, the paper analyzes the prospects, technical approaches, and key research directions for effectively controlling cracks in laser cladding coatings.

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“…To improve wear resistance, reinforcement materials such as al 2 o 3 , Zro 2 , siC, Tin and TiC were used. it has also been reported that the use of WC-Co powder improves the micro hardness of the cladding layer during laser cladding [23][24][25]. destructive tribological testing is required for silver and its alloys which are used in structural components.…”

Section: Matrix Materialsmentioning

confidence: 99%

Effect of Stir Casting Process Parameters and Stirrer Blade Geometry on Mechanical Properties of Al MMCs – A Review

Morsiya,

Pandya

2023

Archives of Metallurgy and Materials

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EffEct of Stir caSting ProcESS ParamEtErS and StirrEr BladE gEomEtry on mEchanical ProPErtiES of al mmcS -a rEviEwaluminium matrix composites offer a combination of properties such as lower weight, higher strength, higher wear resistance and many more. The stir casting process is easy to use, involves low cost and is suitable for mass production compared to other manufacturing processes. an in-depth look at recently manufactured aluminium matrix composites and their impact on particle distribution, porosity, wettability, microstructure and mechanical properties of al matrix composites have all been studied in relation to stirring parameters. several significant concerns have been raised about the sample's poor wettability, porosity and particle distribution. Mechanical, thermal, and tribological properties are frequently studied in conjunction with variations in reinforcement proportion but few studies on the effect of stirrer blade design and parameters such as stirrer shape, dimensions and position have been reported. To study the effect of stirrer blade design on particle distribution, computational fluid dynamics is used by researchers. reported multiphysics models were k-ε model and the k-ω model for simulation. it is necessary to analyse these models to determine which one best solves the real-time problem. stirrer design selection and analysis of its effect on particle distribution using simulation, while taking underlying physics into account, can be well-thought-out as a future area of research in the widely adopted stir casting field.

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Core-shell structural iron based metal matrix composite powder for laser cladding

Cited by 24 publications

References 32 publications

Corrosion Behavior of the CoNiCrAlY-Al2O3 Composite Coating Based on Core-Shell Structured Powder Design

Corrosion Behavior of the CoNiCrAlY-Al2O3 Composite Coating Based on Core-Shell Structured Powder Design

Crack Formation Mechanisms and Control Methods of Laser Cladding Coatings: A Review

Effect of Stir Casting Process Parameters and Stirrer Blade Geometry on Mechanical Properties of Al MMCs – A Review

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