Realizing high strength and toughness of gradient high-entropy alloy coating by in-situ interface reaction of FeCoCrNi/FeCoCrAl

Guan, Yajie; Cui, Xiufang; Chen, Di; Su, Wei‐Ming; Zhao, Yao; Li, Jian; Jin, Guo

doi:10.1016/j.surfcoat.2023.129569

Cited by 26 publications

(1 citation statement)

References 69 publications

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“…For FeCoCrNiAl 1.0 , the number of slip systems of the BCC phase is relatively small, and the grain boundaries slip capacity is lower than that of the FCC phase. [53,54] The motion of the dislocation was more susceptible to locking and viscosity, which made the calculated contribution of dislocation strengthening and grain refinement strengthening of FeCoCrNiAl 1.0 with inevitable errors.…”

Section: Solid Solution Strengtheningmentioning

confidence: 99%

Strengthening Mechanisms in Bulk FeCoCrNiAl_x (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition

2023

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Herein, FeCoCrNiAl x (x = 0, 0.5, 1.0) high‐entropy alloys (HEAs) are fabricated by the laser melting deposition (LMD) technique. With the increase of Al content, the LMD‐ed microstructure transitions from a single face‐centered cubic (FCC) phase to a dual‐phase structure containing a small amount of body‐centered cubic (BCC) phase (5.3%), and the proportion of the final BCC phase increases significantly to 98.2%. In addition to the compression tests, four strengthening models are used to evaluate the theoretical strength of the three alloys. The addition of Al element as grain refiner can improve the ultimate compressive strength of HEAs; however, the yield strength and plasticity do not improve, as theoretically expected. The FCC phase with more slip systems leads to higher plasticity in the LMD‐ed FeCoCrNi HEA but results in lower yield strength. The LMD‐ed FeCoCrNiAl0.5 HEA exhibits the best combination of strength and plasticity. Therefore, to meet the required service requirements, the content of Al in the FeCoCrNiAl x HEA should be carefully controlled under the premise of considering the actual working conditions.

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Section: Solid Solution Strengtheningmentioning

confidence: 99%

Strengthening Mechanisms in Bulk FeCoCrNiAl_x (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition

2023

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Microstructure and Properties of AlCoCrFeNi2.1 Eutectic High-Entropy Alloy Coatings Fabricated by Extreme High-Speed and Conventional Laser Cladding

Wang,

Li,

et al. 2024

J Therm Spray Tech

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Effect of Gd2O3 Addition on High-Temperature Oxidation Performance of NiCoCrAlYTa Coatings

Liu,

Cui,

Jing

et al. 2024

J Therm Spray Tech

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Realizing high strength and toughness of gradient high-entropy alloy coating by in-situ interface reaction of FeCoCrNi/FeCoCrAl

Cited by 26 publications

References 69 publications

Strengthening Mechanisms in Bulk FeCoCrNiAl_x (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition

Strengthening Mechanisms in Bulk FeCoCrNiAl_x (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition

Microstructure and Properties of AlCoCrFeNi2.1 Eutectic High-Entropy Alloy Coatings Fabricated by Extreme High-Speed and Conventional Laser Cladding

Effect of Gd2O3 Addition on High-Temperature Oxidation Performance of NiCoCrAlYTa Coatings

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Realizing high strength and toughness of gradient high-entropy alloy coating by in-situ interface reaction of FeCoCrNi/FeCoCrAl

Cited by 26 publications

References 69 publications

Strengthening Mechanisms in Bulk FeCoCrNiAlx (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition

Strengthening Mechanisms in Bulk FeCoCrNiAlx (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition

Microstructure and Properties of AlCoCrFeNi2.1 Eutectic High-Entropy Alloy Coatings Fabricated by Extreme High-Speed and Conventional Laser Cladding

Effect of Gd2O3 Addition on High-Temperature Oxidation Performance of NiCoCrAlYTa Coatings

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Strengthening Mechanisms in Bulk FeCoCrNiAl_x (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition

Strengthening Mechanisms in Bulk FeCoCrNiAl_x (x=0, 0.5, 1.0) High‐Entropy Alloys Fabricated by Laser Melting Deposition