A Lightweight AlCrTiV[sub.0.5]CuIx/I High-Entropy Alloy with Excellent Corrosion Resistance

A Lightweight AlCrTiV[sub.0.5]CuIx/I 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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Veröffentlicht in:Materials 2023-04, Vol.16 (7)
Hauptverfasser: Peng, Zhen, Li, Baowei, Luo, Zaibin, Chen, Xuefei, Tang, Yao, Yang, Guannan, Gong, Pan
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Alloys
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Specialty metals industry
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container_end_page
container_issue 7
container_start_page
container_title Materials
container_volume 16
creator Peng, Zhen
Li, Baowei
Luo, Zaibin
Chen, Xuefei
Tang, Yao
Yang, Guannan
Gong, Pan
description 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[sub.0.5]Cux (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[sub.0.5] demonstrating the highest corrosion resistance (0.131 μA/cm[sup.2]). Corrosion resistance decreased along with the content of copper because copper segregation accelerated local corrosion throughout the alloy.
doi_str_mv 10.3390/ma16072922
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subjects Alloys
Corrosion and anti-corrosives
Specialty metals industry
title A Lightweight AlCrTiV[sub.0.5]CuIx/I High-Entropy Alloy with Excellent Corrosion Resistance
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