A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast state
In this paper, a novel as-cast CrFeNiAl0.35Si0.1Ti0.1 high entropy alloy (HEA) with micron-to-nano hierarchical heterostructure was designed, and its microstructure, mechanical properties and corrosion resistance have been systematically investigated. It is found that, this novel HEA exhibits well-d...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424024451 |
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| author | Shuai Hu Junyang Zheng Guangzeng Zhang Jiakai Xing Ran Wei Tan Wang Shaojie Wu Yongfu Cai Shaokang Guan Fushan Li Chen Chen |
| author_facet | Shuai Hu Junyang Zheng Guangzeng Zhang Jiakai Xing Ran Wei Tan Wang Shaojie Wu Yongfu Cai Shaokang Guan Fushan Li Chen Chen |
| author_sort | Shuai Hu |
| collection | DOAJ |
| description | In this paper, a novel as-cast CrFeNiAl0.35Si0.1Ti0.1 high entropy alloy (HEA) with micron-to-nano hierarchical heterostructure was designed, and its microstructure, mechanical properties and corrosion resistance have been systematically investigated. It is found that, this novel HEA exhibits well-dispersed L21 phase with various sizes from micron-scale to nano-scale in the BCC matrix, while nano-sized BCC lamellas could also emerge in the L21 phase with large diameter. Moreover, this HEA exhibits not only excellent corrosion resistance in 3.5 wt% NaCl solution that close to super-stainless steels, but also high mechanical properties combining yield strength of 1712 ± 56 MPa, compressive plasticity of 21.2% ± 0.5% and hardness of ∼560 Hv. Such outstanding comprehensive properties for this HEA are possibly resulted from the complex hierarchical BCC-L21-BCC heterostructure with stable passive film and low diversity in work function between different phases. This work provides a novel route in the development of high-performance corrosion-resistant HEAs for structural and coating applications. |
| format | Article |
| id | doaj-art-33a727d223c44575b3fe8b1cdf70ab47 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-33a727d223c44575b3fe8b1cdf70ab472025-08-20T02:35:26ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01335052506310.1016/j.jmrt.2024.10.174A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast stateShuai Hu0Junyang Zheng1Guangzeng Zhang2Jiakai Xing3Ran Wei4Tan Wang5Shaojie Wu6Yongfu Cai7Shaokang Guan8Fushan Li9Chen Chen10School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaCorresponding author.; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaCorresponding author.; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaIn this paper, a novel as-cast CrFeNiAl0.35Si0.1Ti0.1 high entropy alloy (HEA) with micron-to-nano hierarchical heterostructure was designed, and its microstructure, mechanical properties and corrosion resistance have been systematically investigated. It is found that, this novel HEA exhibits well-dispersed L21 phase with various sizes from micron-scale to nano-scale in the BCC matrix, while nano-sized BCC lamellas could also emerge in the L21 phase with large diameter. Moreover, this HEA exhibits not only excellent corrosion resistance in 3.5 wt% NaCl solution that close to super-stainless steels, but also high mechanical properties combining yield strength of 1712 ± 56 MPa, compressive plasticity of 21.2% ± 0.5% and hardness of ∼560 Hv. Such outstanding comprehensive properties for this HEA are possibly resulted from the complex hierarchical BCC-L21-BCC heterostructure with stable passive film and low diversity in work function between different phases. This work provides a novel route in the development of high-performance corrosion-resistant HEAs for structural and coating applications.http://www.sciencedirect.com/science/article/pii/S2238785424024451High entropy alloyMicrostructureMechanical propertiesCorrosion resistanceWork function |
| spellingShingle | Shuai Hu Junyang Zheng Guangzeng Zhang Jiakai Xing Ran Wei Tan Wang Shaojie Wu Yongfu Cai Shaokang Guan Fushan Li Chen Chen A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast state Journal of Materials Research and Technology High entropy alloy Microstructure Mechanical properties Corrosion resistance Work function |
| title | A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast state |
| title_full | A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast state |
| title_fullStr | A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast state |
| title_full_unstemmed | A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast state |
| title_short | A novel BCC-L21-BCC hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as-cast state |
| title_sort | novel bcc l21 bcc hierarchical heterostructure high entropy alloy with excellent corrosion resistance and mechanical properties in as cast state |
| topic | High entropy alloy Microstructure Mechanical properties Corrosion resistance Work function |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424024451 |
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