Mechanical and microstructural characterization of MCrAlY coatings produced by laser cladding: The influence of the Ni, Co and Al content

Pereira, Juan Carlos; Zambrano, Jenny; Rayón, E.; Yáñez, A.; Amigó, V.

doi:10.1016/j.surfcoat.2018.01.073

Cited by 48 publications

(11 citation statements)

References 45 publications

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“…Energies 2022, 15,1914 16 of 45 eters is of utmost importance in obtaining a high-quality continuous coating and preventing common material defects, including cracks, pores and lack of fusion [143]. As mentioned earlier (Figure 1), the coating/substrate adhesion is one of the major characteristics of a suitable coating, which fulfils the function of protecting against tribological failures at high temperatures.…”

Section: Laser Claddingmentioning

confidence: 98%

“…Specifically, the coaxial laser-cladding process has been successfully tested to manufacture dense coatings by using a special nozzle head, which provides the overlapped individual laser tracks [142]. It is worth noting that controlling the process parameters is of utmost importance in obtaining a high-quality continuous coating and preventing common material defects, including cracks, pores and lack of fusion [143]. As mentioned earlier (Figure 1), the coating/substrate adhesion is one of the major characteristics of a suitable coating, which fulfils the function of protecting against tribological failures at high temperatures.…”

Section: Laser Claddingmentioning

confidence: 99%

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A Review on the Enhancement of Mechanical and Tribological Properties of MCrAlY Coatings Reinforced by Dispersed Micro and Nanoparticles

2022

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The application of metal-matrix composite coatings for protecting and improving the service life of sliding components has demonstrated to have the potential of meeting the requirements of a diverse range of engineering industries. Recently, a significant body of research has been devoted to studying the mechanical and tribological performance of dispersion-strengthened MCrAlY coatings. These coatings belong to a class of emerging wear-resistant materials, offering improved properties and being considered as promising candidates for the protection of engineering structural materials exposed to tribological damage, especially at elevated temperature regimes. This paper attempts to comprehensively review the different reinforcements used in the processing of MCrAlY-based alloys and how they influence the mechanical and tribological properties of the corresponding coatings. Furthermore, the major fabrication techniques together with their benefits and challenges are also reviewed. Discussion on the failure mechanisms of these coatings as well as the main determining factors are also included. In addition, a comprehensive survey of studies and investigations in recent times are summarized and elaborated to further substantiate the review.

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Section: Laser Claddingmentioning

confidence: 98%

Section: Laser Claddingmentioning

confidence: 99%

A Review on the Enhancement of Mechanical and Tribological Properties of MCrAlY Coatings Reinforced by Dispersed Micro and Nanoparticles

2022

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“…O autor [27] comprovou que as zonas ricas em Y são distribuídas aleatoriamente, mas sempre em torno dos contornos dos grãos ou em torno de pequenas porosidades na camada quando estudou rotas de processamento a laser de NiCoCrAlY sobre AISI 304. E outros autores [28] também identificam óxidos de ítrio na superfície de NiCrAlY ao estudar ciclos de oxidação do Hastelloy X com revestimento de NiCrAlY via laser.…”

Section: Agradecimentosunclassified

Caracterização microestrutural da camada de NiCrAlY sobre Ti-6Al-4V processado por laser de Yb:fibra

Takahashi¹,

Assis²,

Riva³

et al. 2022

Tecnol. Metal. Mater. Min.

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Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. a ResumoO processamento de materiais com laser é uma alternativa para formação de camadas densas e livres de porosidades, como exige a aplicação da camada metálica em TBC (Thermal Barrier Coating). O TBC é um sistema de camadas de materiais que promove proteção térmica e contra oxidação e corrosão em ligas metálicas, como a liga de titânio (grau 5). Este trabalho tem por objetivo o estudo da microestrutura formada entre a camada metálica de NiCrAlY e a liga Ti-6Al-4V por processamento com laser de Yb:fibra. A camada metálica foi pré depositada na forma de pó e submetida ao laser, cujos parâmetros de velocidade de varredura do feixe variou em 25, 50 e 100 mm/s com potência de 200 W e feixe do laser focalizado com diâmetro de 0,50 mm com sobreposição de 50%, a cada trilha. A avaliação dos parâmetros de laser foi composta pela análise de microscopia eletrônica de varredura, análise de difração de raios X, análise de EDS do perfil transversal da amostra. Os resultados mostraram que houve aderência entre a camada de NiCrAlY e o substrato com baixa diluição química na interface. Com o aumento da velocidade de varredura do feixe de laser, camadas metálicas mais finas foram formadas.

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“…They found that a high dilution can lead to a high HAZ. Pereira et al [16] observed that during laser cladding of NiCoCrBSi on stainless steel, a very low dilution zone (metallurgical method) at about 2 μm is enough to obtain a perfect bonding without affecting the substrate mechanical properties (no cracking behavior observed). Many authors [17][18] presented an EDS analysis to measure the dilution between two materials and its components' chemical evolution.…”

Section: Introductionmentioning

confidence: 99%

Formation of a joint between deposited and base metals during laser cladding of a nickel-based powder onto a copper-based alloy

Bourahima¹,

Baudin²,

Rege³

et al. 2022

The Paton Welding J.

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Laser metal deposition (LMD) is an alternative method to other cladding techniques such as Plasma Transfer Arc (PTA) or blowtorch for surface treatment in the glass industry. It aims to produce dense, high-quality coatings on a non-planar surface without affecting its thermal and mechanical properties. In this study, Ni-based coatings were coated onto Cu-Ni-Al substrate using a 3 JET nozzle technique. During laser cladding, good metallurgical bonding is necessary to ensure the further surfacing process technique. A microstructural analysis was conducted, and the mechanical properties were then evaluated with microhardness analysis to link process parameters to coating bonding quality. A calculation of the power attenuation attempts to explain the impact of the powder distribution on the bonding. This work revealed that a chemical dilution zone exists between coating and substrate and is necessary for perfect metallurgical bonding. The heterogeneous bonding, observed through the section, along the curved interface coating/substrate, has been linked to the Gaussian distribution of the powder that attenuates the input power. The attenuated power was measured all along the interface.

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Mechanical and microstructural characterization of MCrAlY coatings produced by laser cladding: The influence of the Ni, Co and Al content

Cited by 48 publications

References 45 publications

A Review on the Enhancement of Mechanical and Tribological Properties of MCrAlY Coatings Reinforced by Dispersed Micro and Nanoparticles

A Review on the Enhancement of Mechanical and Tribological Properties of MCrAlY Coatings Reinforced by Dispersed Micro and Nanoparticles

Caracterização microestrutural da camada de NiCrAlY sobre Ti-6Al-4V processado por laser de Yb:fibra

Formation of a joint between deposited and base metals during laser cladding of a nickel-based powder onto a copper-based alloy

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