Microstructure and properties of AlCoCrFeNi2.1 eutectic high entropy alloy manufactured by selective laser melting

Chen, Yu; Zhou, Guangming; Cheng, Yuanguang; Hu, Fuchao; Jiang, Tianfan; Sun, Tao; Shen, Yifu; Zhou, Yiming; Li, Junping

doi:10.1016/j.optlastec.2023.109396

Cited by 5 publications

(1 citation statement)

References 40 publications

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“…Since 2004, bulk high entropy alloy (HEA) materials have attracted much more attention as a novel class of advanced structural materials, and the research for the related preparation methods and phase structures has matured considerably [1]. The common high-entropy effects on thermodynamics [2], sluggish diffusion on kinetics [3], severe lattice distortion on structures [4], and cocktail effects on properties [5], promise these HEA materials excellent mechanical performance, good friction and wear performance, high-temperature resistance, irradiation resistance, and corrosion resistance [6][7][8][9][10], etc. However, quite many metal shell materials applied in high-end electronic products show poor self-cleaning properties due to the hydrophilicity and lipophilicity of metals themselves, which limits wide application.…”

Section: Introductionmentioning

confidence: 99%

Investigation of micro and nanostructure on porous high-entropy alloy surface influences its hydrophobicity

Wang,

Zhang,

Zou

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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The micro and nanostructures of materials have an important effect on the wettability of materials' surfaces. For AlCoCrFeNi 2.1 and AlCoCrFe Ni High-entropy alloy, the special porous micro and nanostructure can be fabricated by electrochemical dealloying in 5 wt.% sulfuric acid solution aiming to improve the hydrophobicity of the material surface. The surface crystal structure of the prepared porous HEAs was characterized by X-ray diffraction, the micromorphologies were characterized by a Scanning electron microscope, and the static water contact angles were measured by a contact angle goniometer. The results showed that AlCoCrFeNi 2.1 HEA showed nanoscale pores and smooth surfaces, while AlCoCrFeNi HEA showed microscale pores but rough surfaces generated from nanoscale short rod-like particles. AlCoCrFeNi 2.1 HEA showed FCC (Fe-, Cr-and Ni-rich) and BCC (Al-and Ni-rich) dual phase structures and AlCoCrFeNi HEA showed BCC (Al-and Ni-rich) and B2 (Fe-and Cr-rich) phase structure. The prepared porous AlCoCrFeNi HEA possessed quite good hydrophobicity than that of AlCoCrFeNi 2.1 HEA, and this can be explained as the result of the "lotus effect" formed by the aggregation of nanoscale short rod-like particles.

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Section: Introductionmentioning

confidence: 99%

Investigation of micro and nanostructure on porous high-entropy alloy surface influences its hydrophobicity

Wang,

Zhang,

Zou

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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Grain Morphology and Mechanical Properties Tailoring of Inconel 625 Alloy Fabricated by Laser Powder Bed Fusion

Zhou,

Peng,

et al. 2024

Adv Eng Mater

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The controlling strategies of grain morphology and mechanical properties of Inconel 625 alloy by laser powder bed fusion were investigated, and beyond that, the effects of phase composition, grain morphology and crystallographic texture on mechanical properties were also studied. The phase evolution was insensitive to the scanning strategies and all of the samples were composed of γ‐Ni phase. The (001) texture orientation tended to increase with the scanning rotation angle and the sample IV fabricated by scanning strategies of 90° shows the highest (001) texture. Different grain morphologies can be tailored by controlling the direction of heat flow between continuous layers via changing scanning strategies. The proportion of large elongated columnar crystals gradually decreases while the proportion of the equiaxed grains gradually increases as the scanning strategies change from 0°→90→ 67°→45°. The rotation angle increases from 0° to 45°, the ultimate tensile strength and yield strength increase from 1267±12MPa to 1304±5MPa and 760±10MPa to 801±5MPa, respectively, which is attributed to the different stress states presented in the columnar crystals and the equiaxed crystals.This article is protected by copyright. All rights reserved.

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Numerical and experimental study of RHEAs surface morphology and defect in selective laser melting

Li,

Chen,

et al. 2024

International Journal of Refractory Metals and Hard Materials

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Microstructure and properties of AlCoCrFeNi2.1 eutectic high entropy alloy manufactured by selective laser melting

Cited by 5 publications

References 40 publications

Investigation of micro and nanostructure on porous high-entropy alloy surface influences its hydrophobicity

Investigation of micro and nanostructure on porous high-entropy alloy surface influences its hydrophobicity

Grain Morphology and Mechanical Properties Tailoring of Inconel 625 Alloy Fabricated by Laser Powder Bed Fusion

Numerical and experimental study of RHEAs surface morphology and defect in selective laser melting

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