Effect of Y2O3 addition on the microstructure and mechanical properties of an Al1.8CoCrCu0.5FeNi BCC HEA

Reverte, Eduardo; Keller, Clément; Calvo-Dahlborg, M.; Alcalá, G.; Campos, Mónica; Cornide, J.

doi:10.1016/j.jallcom.2023.170647

Cited by 14 publications

(4 citation statements)

References 70 publications

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“…It indicates a solid solution effect where elements undergo dissolution after mechanical alloying, leading to a finer and more homogeneous microstructure. On the contrary, yttria has a relatively high structural stability at elevated temperatures [25] and is commonly used as dispersion strengthening for alloy design. Figure 4 shows the AlCoCrFeNi2.1 coatings with the addition of Y2O3 subjected to the different milling durations.…”

Section: Sem/eds Observation Of the Coatingsmentioning

confidence: 99%

“…It is believed that there is a good affinity between Al and yttria, forming Al-Y-O by the atomic interaction and diffusion through ball milling and sintering processes. The volume fraction and average particle size of different phases in On the contrary, yttria has a relatively high structural stability at elevated temperatures [25] and is commonly used as dispersion strengthening for alloy design. Figure 4 shows the AlCoCrFeNi 2.1 coatings with the addition of Y 2 O 3 subjected to the different milling durations.…”

Section: Sem/eds Observation Of the Coatings After Annealingmentioning

confidence: 99%

“…It can be assumed that the surface of the milling balls undergoes severe plastic deformation during mechanical alloying, providing high energy at the interface between the substrate and the coating. In this case, there is a favorable affinity between Al and yttria [25,27], and thereby, the presence of Y 2 O 3 could act as nunation sites for the formation of Al-Y-O oxide phases. However, after 16 h of milling, see Figure 6c, the coating has no Cr-rich phase formation in comparison with the Y 2 O 3 -free annealed coating, see Figure 5c.…”

Section: Sem/eds Observation Of the Coatings After Annealingmentioning

confidence: 99%

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Investigations of Oxide Dispersoids and Annealing on Characteristics of AlCoCrFeNi2.1 Coatings and Bulks Prepared by Mechanical Alloying

Chen,

Huang

2024

Coatings

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Eutectic high-entropy alloy (EHEA) has an outstanding combination of high strength and excellent ductility due to its dual-phase structure. In this study, AlCoCrFeNi2.1 coatings on stainless steel substrates and bulk AlCoCrFeNi2.1 alloys were prepared by mechanical alloying (MA). The results show that EHEA coatings with a dual-phase microstructure of BCC-AlNi/FCC-CoCrFe were obtained. A long milling duration promotes a uniform microstructure and homogeneous distribution of composition in the EHEA coatings, increasing hardness. Furthermore, annealing treatment encourages the formation of Cr-rich phases and Al-rich oxides, which affect the mechanical properties of coatings and bulk materials. Additionally, the presence of oxide dispersoids can cause the embrittlement of materials due to the formation of Al-Y-O oxide pores, resulting in the degradation of the mechanical properties of materials.

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Section: Sem/eds Observation Of the Coatingsmentioning

confidence: 99%

Section: Sem/eds Observation Of the Coatings After Annealingmentioning

confidence: 99%

Section: Sem/eds Observation Of the Coatings After Annealingmentioning

confidence: 99%

See 1 more Smart Citation

Investigations of Oxide Dispersoids and Annealing on Characteristics of AlCoCrFeNi2.1 Coatings and Bulks Prepared by Mechanical Alloying

Chen,

Huang

2024

Coatings

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show abstract

“…Due to this, traditional alloy design struggles to break free from the shackles of single-element design. The emergence of HEA, a new material system, breaks this classic alloy design pattern, opening up a new direction for alloy design in materials science [89][90][91][92][93][94][95].…”

Section: High-entropy Alloysmentioning

confidence: 99%

A Review of the Laser Cladding of Metal-Based Alloys, Ceramic-Reinforced Composites, Amorphous Alloys, and High-Entropy Alloys on Aluminum Alloys

Zhao,

Shi,

Wang

et al. 2023

Lubricants

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As one of the lightest structural metals, the application breadth of aluminum alloys is, to some extent, constrained by their relatively low wear resistance and hardness. However, laser cladding technology, with its low dilution rate, compact structure, excellent coating-to-substrate bonding, and environmental advantages, can significantly enhance the surface hardness and wear resistance of aluminum alloys, thus proving to be an effective surface modification strategy. This review focuses on the topic of surface laser cladding materials for aluminum alloys, detailing the application background, process, microstructure, hardness, wear resistance, and corrosion resistance of six types of coatings, namely Al-based, Ni-based, Fe-based, ceramic-based, amorphous glass, and high-entropy alloys. Each coating type’s characteristics are summarized, providing theoretical references for designing and selecting laser cladding coatings for aluminum alloy surfaces. Furthermore, a prediction and outlook for the future development of laser cladding on the surface of aluminum alloys is also presented.

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High entropy alloy bonded cemented carbides: Composition, processing, microstructure, properties and applications

Fan,

Sun,

Zhao

et al. 2024

Ceramics International

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Effect of Y2O3 addition on the microstructure and mechanical properties of an Al1.8CoCrCu0.5FeNi BCC HEA

Cited by 14 publications

References 70 publications

Investigations of Oxide Dispersoids and Annealing on Characteristics of AlCoCrFeNi2.1 Coatings and Bulks Prepared by Mechanical Alloying

Investigations of Oxide Dispersoids and Annealing on Characteristics of AlCoCrFeNi2.1 Coatings and Bulks Prepared by Mechanical Alloying

A Review of the Laser Cladding of Metal-Based Alloys, Ceramic-Reinforced Composites, Amorphous Alloys, and High-Entropy Alloys on Aluminum Alloys

High entropy alloy bonded cemented carbides: Composition, processing, microstructure, properties and applications

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