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Superior bonding of Al/Mg interface by introducing nanocrystals via high-entropy alloy coating and ultrasonic vibration

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Publicado en:Materials Research Letters vol. 13, no. 2 (Feb 2025), p. 131
Autor principal: Xu, Yuancai
Otros Autores: Jiang, Wenming, Li, Qingqing, Yu, Linghui, Yu, Xiaopeng, Peng, Ziwei, Fan, Zitian
Publicado:
Taylor & Francis Ltd.
Materias:
Magnesium
Nanocrystals
Shear strength
Cooling rate
Interdiffusion
Cavitation
Ultrasonic vibration
High entropy alloys
Bimetals
Aluminum
Mechanical properties
Solid solutions
Materials science
Intermetallic compounds
Alloys
Entropy
Interfaces
Crack propagation
Acceso en línea:Citation/Abstract
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Resumen:A novel FeCoNiCrCu high-entropy alloy (HEA) coating and ultrasonic vibration composite treatment method were developed to prepare the Al/Mg bimetal to enhance the Al/Mg interface. Elemental interdiffusion at the Al/HEA interface led to the formation of AlxFeCoNiCrCu. The HEA/Mg interface melted due to friction heat and cavitation effect by ultrasonic vibration and then cooled at an extremely high cooling rate to form nanocrystals. The presence of the nanocrystals hindered dislocation movement, resulting in difficulty in crack propagation, significantly improving the shear strength of the Al/Mg bimetal, which increased from 34.52 MPa without treatment to 77.86 MPa, increasing by 125.55%.
ISSN:2166-3831
DOI:10.1080/21663831.2024.2427337
Fuente:Research Library