Evaluation of high-frequency induction heat sintering and conventional sintering in AlxCoCrFeMnNi high-entropy alloys

Ruiz-Esparza-Rodríguez, M.A., Garay-Reyes, C.G., Mendoza-Duarte, J.M., Estrada-Guel, I., Hernández-Rivera, J.L., Cruz-Rivera, J.J., Gutiérrez-Castañeda, E., Gonzalez Sanchez, Sergio, Garay-Tapia, A.M. and Martínez-Sánchez, R. (2022) Evaluation of high-frequency induction heat sintering and conventional sintering in AlxCoCrFeMnNi high-entropy alloys. Journal of Alloys and Compounds, 910. p. 164780. ISSN 0925-8388

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Official URL: https://doi.org/10.1016/j.jallcom.2022.164780


AlxCoCrFeMnNi high-entropy alloys with different aluminum concentrations (x = 0.5, 1, and 1.5 at%) were synthesized by mechanical alloying followed by consolidation using two different sintering methods, conventional (CS) and high-frequency induction heat + conventional (HFIHS + CS). The results show the presence of FCC, BCC, and B2ordered phases in all systems, regardless of the sintering method. The BCC phase exhibits morphological changes (cuboidal-type and plate-like) associated with the two sintering methods involving different diffusion rates and affecting the hardness values. The M23C6 carbide is identified in systems sintered by the CS method; meanwhile, the M7C3 carbide is identified in the HFIHS + CS method. Finally, the HFIHS + CS method results in a higher level of densification (~95%) than the CS method (~80%).

Item Type: Article
Additional Information: Funding information: The scholarship under grant No. 715550 provided by CONACYT, México is duly recognized. Authors gratefully thank K. Campos- Venegas, R. A. Ochoa-Gamboa, and C. E. Ornelas-Gutierrez for their valuable technical support throughout the study. In addition, the authors gratefully financial support (No.23022) provided by Centro de Iinvestigación en Materiales Avanzados, SC, México.
Uncontrolled Keywords: High-entropy alloy, High-frequency induction heat sintering, Aluminum, Coarsening, Precipitation
Subjects: F200 Materials Science
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: John Coen
Date Deposited: 19 Apr 2022 13:47
Last Modified: 08 Apr 2023 08:00
URI: https://nrl.northumbria.ac.uk/id/eprint/48915

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