A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloys
Two novel HEA compositions of [Nb¯-(FeCoNi)12]Cr3 (Nb¯ = Nb, V) were designed using a high-entropy alloying strategy by analyzing traditional IN718 superalloy based on a cluster-plus-glue-atom model. And their thin-wall-shaped bulks were prepared by laser additive manufacturing, with an emphasis on...
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| Format: | Article |
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Elsevier
2023-11-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523008791 |
| _version_ | 1797526238456184832 |
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| author | Jiawang Wu Yaxiong Guo Fangping Wang Xiaojuan Shang Jing Zhang Qibin Liu |
| author_facet | Jiawang Wu Yaxiong Guo Fangping Wang Xiaojuan Shang Jing Zhang Qibin Liu |
| author_sort | Jiawang Wu |
| collection | DOAJ |
| description | Two novel HEA compositions of [Nb¯-(FeCoNi)12]Cr3 (Nb¯ = Nb, V) were designed using a high-entropy alloying strategy by analyzing traditional IN718 superalloy based on a cluster-plus-glue-atom model. And their thin-wall-shaped bulks were prepared by laser additive manufacturing, with an emphasis on the effects of using V atoms to substitute for Nb atoms on their microstructures and mechanical properties. Also, the strengthening mechanism induced by D019 precipitates of as-aged V2Nb4 HEA was discussed. After using V to substitute for Nb, the contents of inter-dendritic C14-Laves phases are effectively inhibited. The ductility is significantly improved with a small sacrifice of strength (i.e., σb ∼ 851 MPa and δ ∼ 16.8 % for V2Nb4 HEA). After aging treatment, the main microstructure transforms from fine dendrites to recrystallized equiaxed grains. The intercrossed needle-shaped D019 precipitates with a volume fraction of 7.2 % are uniformly distributed in the FCC matrix, which hinders the dislocation slip. Thereto, the as-96-hr-aged V2Nb4 HEA exhibits the most excellent strength-ductility trade-off (e.g., σs ∼ 721.5 MPa, σb ∼ 979.5 MPa with a sufficient δ of 7.5 %). The above findings provide references for the development of LAM high-performance HEAs originating from traditional alloys. |
| first_indexed | 2024-03-10T09:26:23Z |
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| id | doaj.art-2907615e144547c9a004cda84c0ccdf0 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-10T09:26:23Z |
| publishDate | 2023-11-01 |
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| series | Materials & Design |
| spelling | doaj.art-2907615e144547c9a004cda84c0ccdf02023-11-22T04:46:35ZengElsevierMaterials & Design0264-12752023-11-01235112464A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloysJiawang Wu0Yaxiong Guo1Fangping Wang2Xiaojuan Shang3Jing Zhang4Qibin Liu5Department of Metallurgical Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, PR China; Key Laboratory of Advanced Manufacturing Technology, Ministry of Education, Guizhou University, Guiyang 550025, PR ChinaDepartment of Metallurgical Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, PR China; Key Laboratory of Advanced Manufacturing Technology, Ministry of Education, Guizhou University, Guiyang 550025, PR China; Corresponding author at: Department of Metallurgical Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, PR China.Department of Metallurgical Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, PR China; Guiyang Vocational and Technical College, Guiyang 550081, PR ChinaDepartment of Metallurgical Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, PR China; Guizhou Jiaotong Technical College, Guiyang 5514005, PR ChinaDepartment of Metallurgical Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, PR ChinaDepartment of Metallurgical Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, PR China; Key Laboratory of Advanced Manufacturing Technology, Ministry of Education, Guizhou University, Guiyang 550025, PR ChinaTwo novel HEA compositions of [Nb¯-(FeCoNi)12]Cr3 (Nb¯ = Nb, V) were designed using a high-entropy alloying strategy by analyzing traditional IN718 superalloy based on a cluster-plus-glue-atom model. And their thin-wall-shaped bulks were prepared by laser additive manufacturing, with an emphasis on the effects of using V atoms to substitute for Nb atoms on their microstructures and mechanical properties. Also, the strengthening mechanism induced by D019 precipitates of as-aged V2Nb4 HEA was discussed. After using V to substitute for Nb, the contents of inter-dendritic C14-Laves phases are effectively inhibited. The ductility is significantly improved with a small sacrifice of strength (i.e., σb ∼ 851 MPa and δ ∼ 16.8 % for V2Nb4 HEA). After aging treatment, the main microstructure transforms from fine dendrites to recrystallized equiaxed grains. The intercrossed needle-shaped D019 precipitates with a volume fraction of 7.2 % are uniformly distributed in the FCC matrix, which hinders the dislocation slip. Thereto, the as-96-hr-aged V2Nb4 HEA exhibits the most excellent strength-ductility trade-off (e.g., σs ∼ 721.5 MPa, σb ∼ 979.5 MPa with a sufficient δ of 7.5 %). The above findings provide references for the development of LAM high-performance HEAs originating from traditional alloys.http://www.sciencedirect.com/science/article/pii/S0264127523008791High-entropy alloyingLaser additive manufacturingTensile propertiesD019 precipitates |
| spellingShingle | Jiawang Wu Yaxiong Guo Fangping Wang Xiaojuan Shang Jing Zhang Qibin Liu A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloys Materials & Design High-entropy alloying Laser additive manufacturing Tensile properties D019 precipitates |
| title | A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloys |
| title_full | A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloys |
| title_fullStr | A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloys |
| title_full_unstemmed | A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloys |
| title_short | A D019 precipitate strengthened laser additively manufactured V and Nb bearing CoCrFeNi based high entropy alloys |
| title_sort | d019 precipitate strengthened laser additively manufactured v and nb bearing cocrfeni based high entropy alloys |
| topic | High-entropy alloying Laser additive manufacturing Tensile properties D019 precipitates |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523008791 |
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