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

Authors :
Peng, Zhen
Li, Baowei
Luo, Zaibin
Chen, Xuefei
Tang, Yao
Yang, Guannan
Gong, Pan
Source :
Materials (1996-1944); Apr2023, Vol. 16 Issue 7, p2922, 13p
Publication Year :
2023

Abstract

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<subscript>0.5</subscript>Cu<subscript>x</subscript> (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<subscript>0.5</subscript> demonstrating the highest corrosion resistance (0.131 μA/cm<superscript>2</superscript>). Corrosion resistance decreased along with the content of copper because copper segregation accelerated local corrosion throughout the alloy. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
19961944
Volume :
16
Issue :
7
Database :
Complementary Index
Journal :
Materials (1996-1944)
Publication Type :
Academic Journal
Accession number :
163042650
Full Text :
https://doi.org/10.3390/ma16072922