Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistance
In this study, a Co-30Ni-10Al-6Ta-10Cr alloy was designed based on CALPHAD (Calculation of Phase Diagrams) method targeting high γ′ phase fraction and solvus, and optimal thermal processing window. Experimental results concurred with the calculations and validated Cr as a γ phase-forming element in...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524000455 |
| _version_ | 1797301629955866624 |
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| author | Cuiping Wang Haojun Zhuo Debin Zheng Xiang Yu Xiaodong Chen Yuechao Chen Xin Chen Jinbin Zhang Jiajia Han Xingjun Liu |
| author_facet | Cuiping Wang Haojun Zhuo Debin Zheng Xiang Yu Xiaodong Chen Yuechao Chen Xin Chen Jinbin Zhang Jiajia Han Xingjun Liu |
| author_sort | Cuiping Wang |
| collection | DOAJ |
| description | In this study, a Co-30Ni-10Al-6Ta-10Cr alloy was designed based on CALPHAD (Calculation of Phase Diagrams) method targeting high γ′ phase fraction and solvus, and optimal thermal processing window. Experimental results concurred with the calculations and validated Cr as a γ phase-forming element in Co-Ni-Al-Ta-based alloys. The incorporation of Cr in the alloy helps mitigate lattice misfit, coarsening rate, and alloy density, while enhancing microstructural stability. A certain amount of Cr led to the development of a superalloy with both high mechanical performance γ′ solvus and low density. Moreover, the oxidation resistance of the Co-Ni-Al-Ta-based high-temperature alloy can be substantially elevated by the introduction of Cr. At 1000 °C, the Co-30Ni-10Al-6Ta-10Cr alloy displayed comparatively low oxidation weight gain, which signifies its excellent oxidation resistance. This is mainly attributed to the formation of continuous (Co,Ni)(Al,Cr)2O4 spinel oxide layers during prolonged oxidation. |
| first_indexed | 2024-03-07T23:25:20Z |
| format | Article |
| id | doaj.art-fb7915d3be954e5a81457ccafb5ad07d |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-07T23:25:20Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-fb7915d3be954e5a81457ccafb5ad07d2024-02-21T05:24:01ZengElsevierMaterials & Design0264-12752024-02-01238112673Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistanceCuiping Wang0Haojun Zhuo1Debin Zheng2Xiang Yu3Xiaodong Chen4Yuechao Chen5Xin Chen6Jinbin Zhang7Jiajia Han8Xingjun Liu9College of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Institute of Materials Genome and Big Data, Harbin Institute of Technology, Shenzhen 518055, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR ChinaCollege of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR China; Corresponding authors at: College of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China.College of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China; Xiamen Key Laboratory of High Performance Metals and Materials, Xiamen University, Xiamen University, Xiamen 361005, PR China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, PR China; Institute of Materials Genome and Big Data, Harbin Institute of Technology, Shenzhen 518055, PR China; Corresponding authors at: College of Materials and Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen 361005, PR China.In this study, a Co-30Ni-10Al-6Ta-10Cr alloy was designed based on CALPHAD (Calculation of Phase Diagrams) method targeting high γ′ phase fraction and solvus, and optimal thermal processing window. Experimental results concurred with the calculations and validated Cr as a γ phase-forming element in Co-Ni-Al-Ta-based alloys. The incorporation of Cr in the alloy helps mitigate lattice misfit, coarsening rate, and alloy density, while enhancing microstructural stability. A certain amount of Cr led to the development of a superalloy with both high mechanical performance γ′ solvus and low density. Moreover, the oxidation resistance of the Co-Ni-Al-Ta-based high-temperature alloy can be substantially elevated by the introduction of Cr. At 1000 °C, the Co-30Ni-10Al-6Ta-10Cr alloy displayed comparatively low oxidation weight gain, which signifies its excellent oxidation resistance. This is mainly attributed to the formation of continuous (Co,Ni)(Al,Cr)2O4 spinel oxide layers during prolonged oxidation.http://www.sciencedirect.com/science/article/pii/S0264127524000455Co-based superalloyγ′/γ MicrostructureOxidation resistanceMechanical properties |
| spellingShingle | Cuiping Wang Haojun Zhuo Debin Zheng Xiang Yu Xiaodong Chen Yuechao Chen Xin Chen Jinbin Zhang Jiajia Han Xingjun Liu Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistance Materials & Design Co-based superalloy γ′/γ Microstructure Oxidation resistance Mechanical properties |
| title | Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistance |
| title_full | Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistance |
| title_fullStr | Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistance |
| title_full_unstemmed | Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistance |
| title_short | Development of a low-density Co-Ni-Al-Ta-Cr superalloy with high mechanical performance and superior oxidation resistance |
| title_sort | development of a low density co ni al ta cr superalloy with high mechanical performance and superior oxidation resistance |
| topic | Co-based superalloy γ′/γ Microstructure Oxidation resistance Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524000455 |
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