A Lightweight AlCrTiV(0.5)Cu(x) High-Entropy Alloy with Excellent Corrosion Resistance

Lightweight high-entropy alloys (HEAs) are a new class of low-density, high strength-to-weight ratio metallic structural material. Understanding their corrosion behavior is crucial for designing microstructures for their practical applications. This work investigates the electrochemical corrosion be...

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Detalles Bibliográficos
Autores principales: Peng, Zhen, Li, Baowei, Luo, Zaibin, Chen, Xuefei, Tang, Yao, Yang, Guannan, Gong, Pan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095625/
https://www.ncbi.nlm.nih.gov/pubmed/37049215
http://dx.doi.org/10.3390/ma16072922
Descripción
Sumario:Lightweight high-entropy alloys (HEAs) are a new class of low-density, high strength-to-weight ratio metallic structural material. Understanding their corrosion behavior is crucial for designing microstructures for their practical applications. This work investigates the electrochemical corrosion behavior of lightweight HEAs AlCrTiV(0.5)Cu(x) (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) in a 0.6 M NaCl solution. These HEAs were produced by vacuum arc melting. In contrast to 304L stainless steel, all of the alloys exhibited lower current density levels caused by self-corrosion, with AlCrTiV(0.5) demonstrating the highest corrosion resistance (0.131 μA/cm(2)). Corrosion resistance decreased along with the content of copper because copper segregation accelerated local corrosion throughout the alloy.

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