Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloy
High compressive strength combined with excellent anti-corrosion property is an urgent demand for marine drilling platform. Here we achieve superior combination of mechanical property and corrosion resistance of the Fe _30 Cr _15 V _15 Ni _20 Al _20 eutectic high entropy alloy (EHEA) via solid solut...
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| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Materials Futures |
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| Online Access: | https://doi.org/10.1088/2752-5724/adf2c1 |
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| author | Mingze Wang Yongfeng Shen Nan Jia Wenying Xue Xinli Wang |
| author_facet | Mingze Wang Yongfeng Shen Nan Jia Wenying Xue Xinli Wang |
| author_sort | Mingze Wang |
| collection | DOAJ |
| description | High compressive strength combined with excellent anti-corrosion property is an urgent demand for marine drilling platform. Here we achieve superior combination of mechanical property and corrosion resistance of the Fe _30 Cr _15 V _15 Ni _20 Al _20 eutectic high entropy alloy (EHEA) via solid solution and aging treatments. Hierarchical precipitation of nanosized B2 (NiAl) and L2 _1 (Fe _2 CrV) phases occurs within the BCC matrix and B2 phases, respectively. Consequently, the alloy exhibits an ultrahigh compressive strength (yield strength of 2330 MPa and ultimate strength of 3050 MPa) and remarkable compressive strain of 28%. The exceptional strain hardening is achieved by sequentially triggering a synergic strain-hardening mechanisms including the first stage of precipitation hardening and the hardening jointly contributed by Lomer–Cottrell lock, as well as the misfit dislocations induced coherent interface in the second stage. Moreover, this alloy also demonstrates excellent corrosion resistance, evidenced by a low corrosion current density (6.42 × 10 ^−6 A cm ^−2 ) and stable passive film formation. These findings establish a novel microstructural design strategy for EHEAs to achieve mechanical-corrosion balance in marine environments. |
| format | Article |
| id | doaj-art-76e97e96f1ca47f2a8b7c4b6e073795b |
| institution | DOAJ |
| issn | 2752-5724 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Futures |
| spelling | doaj-art-76e97e96f1ca47f2a8b7c4b6e073795b2025-08-20T03:18:54ZengIOP PublishingMaterials Futures2752-57242025-01-014303500410.1088/2752-5724/adf2c1Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloyMingze Wang0Yongfeng Shen1https://orcid.org/0000-0001-5366-3906Nan Jia2Wenying Xue3Xinli Wang4Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University , Shenyang 110819, People’s Republic of ChinaKey Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University , Shenyang 110819, People’s Republic of ChinaKey Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University , Shenyang 110819, People’s Republic of ChinaState Key Laboratory of Digital Steel, Northeastern University , Shenyang 110819, People’s Republic of ChinaAnalytical and Testing Center, Northeastern University , Shenyang 110819, People’s Republic of ChinaHigh compressive strength combined with excellent anti-corrosion property is an urgent demand for marine drilling platform. Here we achieve superior combination of mechanical property and corrosion resistance of the Fe _30 Cr _15 V _15 Ni _20 Al _20 eutectic high entropy alloy (EHEA) via solid solution and aging treatments. Hierarchical precipitation of nanosized B2 (NiAl) and L2 _1 (Fe _2 CrV) phases occurs within the BCC matrix and B2 phases, respectively. Consequently, the alloy exhibits an ultrahigh compressive strength (yield strength of 2330 MPa and ultimate strength of 3050 MPa) and remarkable compressive strain of 28%. The exceptional strain hardening is achieved by sequentially triggering a synergic strain-hardening mechanisms including the first stage of precipitation hardening and the hardening jointly contributed by Lomer–Cottrell lock, as well as the misfit dislocations induced coherent interface in the second stage. Moreover, this alloy also demonstrates excellent corrosion resistance, evidenced by a low corrosion current density (6.42 × 10 ^−6 A cm ^−2 ) and stable passive film formation. These findings establish a novel microstructural design strategy for EHEAs to achieve mechanical-corrosion balance in marine environments.https://doi.org/10.1088/2752-5724/adf2c1eutectic high-entropy alloynano precipitatesmisfit dislocationmechanical propertycorrosion resistance |
| spellingShingle | Mingze Wang Yongfeng Shen Nan Jia Wenying Xue Xinli Wang Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloy Materials Futures eutectic high-entropy alloy nano precipitates misfit dislocation mechanical property corrosion resistance |
| title | Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloy |
| title_full | Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloy |
| title_fullStr | Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloy |
| title_full_unstemmed | Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloy |
| title_short | Multistage precipitation triggering 3 GPa compressive strength and superior corrosion resistance in a FeCrVNiAl alloy |
| title_sort | multistage precipitation triggering 3 gpa compressive strength and superior corrosion resistance in a fecrvnial alloy |
| topic | eutectic high-entropy alloy nano precipitates misfit dislocation mechanical property corrosion resistance |
| url | https://doi.org/10.1088/2752-5724/adf2c1 |
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