Effect of electron beam melt superheating treatment on DZ125 alloy
Electron beam melt superheating treatment (EBMST) is firstly proposed to prepare DZ125 alloy, which opens up a new way to further explore and improve the properties of superalloys. The effects of melt superheating treatment at ultra-high temperature on the composition, microstructure and purity of s...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423009110 |
| _version_ | 1797798753236680704 |
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| author | Yi Li Yi Tan Dinggang Wang Xiaogang You Ziang Chen Rusheng Bai Jianbing Qiang |
| author_facet | Yi Li Yi Tan Dinggang Wang Xiaogang You Ziang Chen Rusheng Bai Jianbing Qiang |
| author_sort | Yi Li |
| collection | DOAJ |
| description | Electron beam melt superheating treatment (EBMST) is firstly proposed to prepare DZ125 alloy, which opens up a new way to further explore and improve the properties of superalloys. The effects of melt superheating treatment at ultra-high temperature on the composition, microstructure and purity of superalloy were studied. As the melt superheating power increases, the mass loss rate of the alloy increases gradually. A theoretical model for controlling alloy composition was established. The secondary dendrite spacing, the area fraction of the eutectic structure and the size of γ′ phases decrease first and then increase with the increase of the melt superheating power. The sizes of γ′ phases at dendritic core and interdendritic regions have the minimum values of 0.12 μm and 0.16 μm, respectively. As the melt superheating power increases, the segregation coefficients of Co and W increase first and then decrease, while that of Ti and Mo decrease first and then increase. The best purification effect is achieved at 14 kW, where the content of O and N are 1.8 ppmw and 1.2 ppmw, respectively. It means that 78% O and 80% N are removed from the raw materials. |
| first_indexed | 2024-03-13T04:09:36Z |
| format | Article |
| id | doaj.art-a596264b780d4b9e839b88cf8a048e42 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:09:36Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a596264b780d4b9e839b88cf8a048e422023-06-21T06:57:11ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012460886106Effect of electron beam melt superheating treatment on DZ125 alloyYi Li0Yi Tan1Dinggang Wang2Xiaogang You3Ziang Chen4Rusheng Bai5Jianbing Qiang6School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; Key Laboratory for Energy Beam Metallurgy and Advanced Materials Preparation of Liaoning Province, Dalian 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; Key Laboratory for Energy Beam Metallurgy and Advanced Materials Preparation of Liaoning Province, Dalian 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China; Corresponding author.Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; Key Laboratory for Energy Beam Metallurgy and Advanced Materials Preparation of Liaoning Province, Dalian 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China; Beijing Institute of Aeronautical Materials, Beijing 100095, China; Zhongyuan Critical Metals Laboratory, Zhengzhou University, Science Road 100, Zhengzhou, Henan, 450001, P. R. ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; Key Laboratory for Energy Beam Metallurgy and Advanced Materials Preparation of Liaoning Province, Dalian 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; Key Laboratory for Energy Beam Metallurgy and Advanced Materials Preparation of Liaoning Province, Dalian 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, ChinaElectron beam melt superheating treatment (EBMST) is firstly proposed to prepare DZ125 alloy, which opens up a new way to further explore and improve the properties of superalloys. The effects of melt superheating treatment at ultra-high temperature on the composition, microstructure and purity of superalloy were studied. As the melt superheating power increases, the mass loss rate of the alloy increases gradually. A theoretical model for controlling alloy composition was established. The secondary dendrite spacing, the area fraction of the eutectic structure and the size of γ′ phases decrease first and then increase with the increase of the melt superheating power. The sizes of γ′ phases at dendritic core and interdendritic regions have the minimum values of 0.12 μm and 0.16 μm, respectively. As the melt superheating power increases, the segregation coefficients of Co and W increase first and then decrease, while that of Ti and Mo decrease first and then increase. The best purification effect is achieved at 14 kW, where the content of O and N are 1.8 ppmw and 1.2 ppmw, respectively. It means that 78% O and 80% N are removed from the raw materials.http://www.sciencedirect.com/science/article/pii/S2238785423009110Nickel base superalloyCompositionMicrostructureImpurityElectron beamMelt superheating treatment |
| spellingShingle | Yi Li Yi Tan Dinggang Wang Xiaogang You Ziang Chen Rusheng Bai Jianbing Qiang Effect of electron beam melt superheating treatment on DZ125 alloy Journal of Materials Research and Technology Nickel base superalloy Composition Microstructure Impurity Electron beam Melt superheating treatment |
| title | Effect of electron beam melt superheating treatment on DZ125 alloy |
| title_full | Effect of electron beam melt superheating treatment on DZ125 alloy |
| title_fullStr | Effect of electron beam melt superheating treatment on DZ125 alloy |
| title_full_unstemmed | Effect of electron beam melt superheating treatment on DZ125 alloy |
| title_short | Effect of electron beam melt superheating treatment on DZ125 alloy |
| title_sort | effect of electron beam melt superheating treatment on dz125 alloy |
| topic | Nickel base superalloy Composition Microstructure Impurity Electron beam Melt superheating treatment |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423009110 |
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