Microstructure and properties of laser-clad high entropy alloy coating on Inconel 718 alloy

Article Materials Science, Ceramics

High-temperature mechanical properties and oxidation resistance of SiCf/SiC ceramic matrix composites with multi-layer environmental barrier coatings for turbine applications

Qing Hu et al.

Summary: This study fabricated multi-layer environmental barrier coatings (EBCs) for SiCf/SiC using atmospheric plasma spraying (APS), which significantly improved its fatigue properties at high temperatures, attracting great attention.

CERAMICS INTERNATIONAL (2021)

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Article Materials Science, Multidisciplinary

Evolution in microstructure, wear, corrosion, and tribocorrosion behavior of Mo-containing high-entropy alloy coatings fabricated by laser cladding

Yu Fu et al.

Summary: The exploration of non-equimolar high-entropy alloy coating provides a broader space for the development of high-performance coatings. The addition of Mo significantly increased the hardness and wear resistance, with CoCr2FeNiMo0.3 coating showing excellent performance in acidic NaCl solution. The tribocorrosion mechanism of the Mo-containing coating involved a combination of abrasion, adhesion wear, and corrosion.

CORROSION SCIENCE (2021)

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Article Materials Science, Multidisciplinary

Microstructure and dislocation density of AlCoCrFeNiSix high entropy alloy coatings by laser cladding

Hao Liu et al.

Summary: The addition of Si element enhances the microhardness of AlCoCrFeNiSix high-entropy alloy coatings, mainly through solid-solution strengthening, precipitation strengthening, and dislocation strengthening.

MATERIALS LETTERS (2021)

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Article Materials Science, Multidisciplinary

Microstructure and Mechanical Properties of Nickel-Based Coatings Fabricated through Laser Additive Manufacturing

Shaoxiang Qian et al.

Summary: In this study, single-layer and three-layer nickel-based coatings were fabricated on 316L SS by laser additive manufacturing. The results show that the three-layer coating exhibits the best wear resistance, attributed to the presence of solid solution phase gamma-(Fe, Ni) and hard phases of Ni17Si3, Cr5B3, Ni3B, as well as the fine surface structure.

METALS (2021)

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Article Materials Science, Coatings & Films

Microstructure and properties of CoCrFeNiMo0.2 high-entropy alloy enhanced by high-current pulsed electron beam

Peng Lyu et al.

Summary: In this study, a new surface modification technique using high-current pulsed electron beam (HCPEB) was applied to CoCrFeNiMo0.2 high-entropy alloys, resulting in significantly improved properties such as microhardness and wear resistance.

SURFACE & COATINGS TECHNOLOGY (2021)

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Article Chemistry, Physical

Microstructure and wear properties of laser-clad NiCo alloy coating on Inconel 718 alloy

Tao Wang et al.

Summary: A NiCo coating was successfully prepared on the Inconel 718 substrate by pulsed laser cladding, with higher hardness and better wear resistance compared to the substrate. The compressive residual stress on the coating's surface prevents crack generation and improves fatigue strength.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Engineering, Mechanical

A novel intermediate temperature self-lubricating CoCrCu1-xFeNix high entropy alloy fabricated by direct laser cladding

Ahmad Ostovari Moghaddam et al.

Summary: A self-lubricating high entropy alloy (HEA) coating was in-situ prepared by laser cladding, with the segregation of nearly pure copper providing a protective oxide layer during dry sliding conditions. This study demonstrates the potential for using laser cladding as a high throughput process to rapidly fabricate self-lubricating HEA coatings by combining the intrinsic features of HEAs and additive manufacturing.

TRIBOLOGY INTERNATIONAL (2021)

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Article Engineering, Mechanical

Probing the failure mechanisms and microstructure evolution of a high-pressure turbine blade coated with AlSiY

Jun Zhang et al.

Summary: The investigation revealed that thermal fatigue cracks occurred and propagated on the trailing edge of the blade during the test run, with further propagation during the fatigue test. Brittle and hard phases precipitated in the inter-diffusion zone, leading to thermal fatigue cracks initiation.

ENGINEERING FAILURE ANALYSIS (2021)

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Article Materials Science, Coatings & Films

Microstructure and high-temperature properties of laser cladded AlCoCrFeNiTi0.5 high-entropy coating on Ti 6Al-4V alloy

Xian Zeng et al.

Summary: In this study, an AlCoCrFeNiTi0.5 high-entropy alloy (HEA) coating was successfully deposited on a Ti-6Al-4V alloy through laser cladding, showing excellent high-temperature oxidation resistance and wear performance. The coating exhibited a complex microstructure, high hardness, low oxidation rate, and minimal wear volume loss.

SURFACE & COATINGS TECHNOLOGY (2021)

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Article Materials Science, Coatings & Films

Microstructure and high temperature erosion behavior of laser cladded CoCrFeNiSi high entropy alloy coating

Shiyi Zhang et al.

Summary: In this study, a CoCrFeNiSi high entropy alloy (HEA) coating was successfully prepared on 304 stainless steel surface by laser cladding, without pores or slag defects. The HEA coating exhibited higher microhardness and lower erosion rates compared to a Co-based alloy coating, showing superior performance in high temperature erosion and oxidation resistance.

SURFACE & COATINGS TECHNOLOGY (2021)

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Review Engineering, Manufacturing

A review on laser cladding of high-entropy alloys, their recent trends and potential applications

Zia Ullah Arif et al.

Summary: High-Entropy Alloys (HEAs) have attracted significant attention in the field of material science and engineering, with their promising applications in coatings for challenging conditions. Laser cladding technology has been explored for improving the performance of HEA materials, leading to the development of Laser-Cladded High-Entropy Alloy Coatings (LC-HEACs). This article reviews the current trends and research gaps in LC-HEACs, highlighting the influence of process parameters and techniques to enhance the quality of the coatings.

JOURNAL OF MANUFACTURING PROCESSES (2021)

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Article Chemistry, Physical