A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductility
There is a strong demand for metallic materials with exceptional comprehensive properties in various engineering applications. In this work, a novel cost-effective Fe62Ni15Cr13Si7Al3 (at%) medium entropy alloy (MEA) was designed. Through the utilization of cold-rolling and short-duration annealing t...
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424030242 |
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| author | Hongyan Wang Qiuyu Gao Zhimin Yang Chongxun Fang Yongfu Cai Juqiang Zhang Xin Zhao Ran Wei |
| author_facet | Hongyan Wang Qiuyu Gao Zhimin Yang Chongxun Fang Yongfu Cai Juqiang Zhang Xin Zhao Ran Wei |
| author_sort | Hongyan Wang |
| collection | DOAJ |
| description | There is a strong demand for metallic materials with exceptional comprehensive properties in various engineering applications. In this work, a novel cost-effective Fe62Ni15Cr13Si7Al3 (at%) medium entropy alloy (MEA) was designed. Through the utilization of cold-rolling and short-duration annealing techniques, we successfully achieved a partially recrystallized microstructure in the MEA, primarily consisting of nearly single face-centered cubic (FCC) microstructure with NiAl-rich B2 nano-precipitates. The MEA demonstrates exceptional high tensile yield strengths (>1 GPa) at both room and cryogenic temperatures. Furthermore, it exhibits an impressive ultimate tensile strength of ∼1.8 GPa and high uniform ductility of ∼45% at 77 K. Particularly, the MEA exhibits the ultra-high specific yield strength (200 MPa cm3/g) at 77 K, compared to previously reported medium/high entropy alloys (M/HEAs). Through microstructure analysis and molecular dynamic simulation, it has been determined that the outstanding cryogenic strength-ductility synergy can be attributed to multiple deformation mechanisms, including Lüders deformation, deformation nanotwins, stacking faults, B2 nano-precipitates, Lomer-Cottrell locks, back stress strengthening, and deformation-induced martensitic transformation. These findings offer an exciting opportunity for designing cost-effective M/HEAs with superior properties surpassing those of conventional alloys. |
| format | Article |
| id | doaj-art-dd7ec6d7ec8e426596f47a853ca9d5e8 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-dd7ec6d7ec8e426596f47a853ca9d5e82025-02-02T05:27:38ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013526462655A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductilityHongyan Wang0Qiuyu Gao1Zhimin Yang2Chongxun Fang3Yongfu Cai4Juqiang Zhang5Xin Zhao6Ran Wei7Henan Key Laboratory of Aeronautical Materials and Application Technology, School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, 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, China; Corresponding author.Henan Key Laboratory of Aeronautical Materials and Application Technology, School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, ChinaHenan Key Laboratory of Aeronautical Materials and Application Technology, School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China; Corresponding author.There is a strong demand for metallic materials with exceptional comprehensive properties in various engineering applications. In this work, a novel cost-effective Fe62Ni15Cr13Si7Al3 (at%) medium entropy alloy (MEA) was designed. Through the utilization of cold-rolling and short-duration annealing techniques, we successfully achieved a partially recrystallized microstructure in the MEA, primarily consisting of nearly single face-centered cubic (FCC) microstructure with NiAl-rich B2 nano-precipitates. The MEA demonstrates exceptional high tensile yield strengths (>1 GPa) at both room and cryogenic temperatures. Furthermore, it exhibits an impressive ultimate tensile strength of ∼1.8 GPa and high uniform ductility of ∼45% at 77 K. Particularly, the MEA exhibits the ultra-high specific yield strength (200 MPa cm3/g) at 77 K, compared to previously reported medium/high entropy alloys (M/HEAs). Through microstructure analysis and molecular dynamic simulation, it has been determined that the outstanding cryogenic strength-ductility synergy can be attributed to multiple deformation mechanisms, including Lüders deformation, deformation nanotwins, stacking faults, B2 nano-precipitates, Lomer-Cottrell locks, back stress strengthening, and deformation-induced martensitic transformation. These findings offer an exciting opportunity for designing cost-effective M/HEAs with superior properties surpassing those of conventional alloys.http://www.sciencedirect.com/science/article/pii/S2238785424030242Medium entropy alloyMechanical propertiesTransformation-induced plasticityPrecipitationMolecular dynamics |
| spellingShingle | Hongyan Wang Qiuyu Gao Zhimin Yang Chongxun Fang Yongfu Cai Juqiang Zhang Xin Zhao Ran Wei A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductility Journal of Materials Research and Technology Medium entropy alloy Mechanical properties Transformation-induced plasticity Precipitation Molecular dynamics |
| title | A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductility |
| title_full | A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductility |
| title_fullStr | A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductility |
| title_full_unstemmed | A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductility |
| title_short | A novel cost-effective heterostructured Fe-based medium-entropy alloy with high cryogenic strength and ductility |
| title_sort | novel cost effective heterostructured fe based medium entropy alloy with high cryogenic strength and ductility |
| topic | Medium entropy alloy Mechanical properties Transformation-induced plasticity Precipitation Molecular dynamics |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424030242 |
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