A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></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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MDPI AG
2023-04-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/7/2922 |
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| author | Zhen Peng Baowei Li Zaibin Luo Xuefei Chen Yao Tang Guannan Yang Pan Gong |
| author_facet | Zhen Peng Baowei Li Zaibin Luo Xuefei Chen Yao Tang Guannan Yang Pan Gong |
| author_sort | Zhen Peng |
| collection | DOAJ |
| 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</sub>Cu<i><sub>x</sub></i> (<i>x</i> = 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</sub> demonstrating the highest corrosion resistance (0.131 μA/cm<sup>2</sup>). Corrosion resistance decreased along with the content of copper because copper segregation accelerated local corrosion throughout the alloy. |
| first_indexed | 2024-03-11T05:30:54Z |
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| id | doaj.art-9422774063d7468585314c651d7eb8b0 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T05:30:54Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-9422774063d7468585314c651d7eb8b02023-11-17T17:07:07ZengMDPI AGMaterials1996-19442023-04-01167292210.3390/ma16072922A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></i> High-Entropy Alloy with Excellent Corrosion ResistanceZhen Peng0Baowei Li1Zaibin Luo2Xuefei Chen3Yao Tang4Guannan Yang5Pan Gong6School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaChina Steel Development Research Institute, No.95 Longfusi Street, Dongcheng District, Beijing 100009, ChinaState Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, ChinaLightweight 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</sub>Cu<i><sub>x</sub></i> (<i>x</i> = 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</sub> demonstrating the highest corrosion resistance (0.131 μA/cm<sup>2</sup>). Corrosion resistance decreased along with the content of copper because copper segregation accelerated local corrosion throughout the alloy.https://www.mdpi.com/1996-1944/16/7/2922corrosion resistancehigh entropy alloysmicrostructurelightweight |
| spellingShingle | Zhen Peng Baowei Li Zaibin Luo Xuefei Chen Yao Tang Guannan Yang Pan Gong A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></i> High-Entropy Alloy with Excellent Corrosion Resistance Materials corrosion resistance high entropy alloys microstructure lightweight |
| title | A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></i> High-Entropy Alloy with Excellent Corrosion Resistance |
| title_full | A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></i> High-Entropy Alloy with Excellent Corrosion Resistance |
| title_fullStr | A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></i> High-Entropy Alloy with Excellent Corrosion Resistance |
| title_full_unstemmed | A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></i> High-Entropy Alloy with Excellent Corrosion Resistance |
| title_short | A Lightweight AlCrTiV<sub>0.5</sub>Cu<i><sub>x</sub></i> High-Entropy Alloy with Excellent Corrosion Resistance |
| title_sort | lightweight alcrtiv sub 0 5 sub cu i sub x sub i high entropy alloy with excellent corrosion resistance |
| topic | corrosion resistance high entropy alloys microstructure lightweight |
| url | https://www.mdpi.com/1996-1944/16/7/2922 |
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