High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler material
High-performance joining especially brazing has been highly expected in the manufacture or maintenance of single crystal blades. In this paper, a Ni-40Cr-10Ta (at.%) alloy was developed as filler material for single crystal superalloys. High-performance brazing of DD5 superalloy was achieved. The jo...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523009929 |
| _version_ | 1827375622158024704 |
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| author | Zhenqian Lang Taiyong Zou Zheng Ye Tao Wu Wanli Wang Jian Yang Jihua Huang |
| author_facet | Zhenqian Lang Taiyong Zou Zheng Ye Tao Wu Wanli Wang Jian Yang Jihua Huang |
| author_sort | Zhenqian Lang |
| collection | DOAJ |
| description | High-performance joining especially brazing has been highly expected in the manufacture or maintenance of single crystal blades. In this paper, a Ni-40Cr-10Ta (at.%) alloy was developed as filler material for single crystal superalloys. High-performance brazing of DD5 superalloy was achieved. The joints brazed at 1260 °C contained an isothermal solidification zone (ISZ) with “γ + γ′” structure and an athermal solidification zone (ASZ) composed of γ, γ', γ/γ′-eutectics, TaCr2 and TaC. Unlike the conventional filler materials with melting point depressants of B and Si, the Ni-Cr-Ta filler material was free of B and Si, and thus the resulting joints contained no B-rich and Si-rich compounds and eutectics with low melting points, which enhanced the brazed joint performance. The tensile strength at 980 ℃ of the heat-treated joints reached 654 MPa, which is 88.5 % that of the base metal. |
| first_indexed | 2024-03-08T11:54:41Z |
| format | Article |
| id | doaj.art-ad35cb7c5f734a22b9dda68b48c8b103 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-08T11:54:41Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-ad35cb7c5f734a22b9dda68b48c8b1032024-01-24T05:16:31ZengElsevierMaterials & Design0264-12752024-01-01237112576High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler materialZhenqian Lang0Taiyong Zou1Zheng Ye2Tao Wu3Wanli Wang4Jian Yang5Jihua Huang6School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaCorresponding authors.; School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaCorresponding authors.; School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaHigh-performance joining especially brazing has been highly expected in the manufacture or maintenance of single crystal blades. In this paper, a Ni-40Cr-10Ta (at.%) alloy was developed as filler material for single crystal superalloys. High-performance brazing of DD5 superalloy was achieved. The joints brazed at 1260 °C contained an isothermal solidification zone (ISZ) with “γ + γ′” structure and an athermal solidification zone (ASZ) composed of γ, γ', γ/γ′-eutectics, TaCr2 and TaC. Unlike the conventional filler materials with melting point depressants of B and Si, the Ni-Cr-Ta filler material was free of B and Si, and thus the resulting joints contained no B-rich and Si-rich compounds and eutectics with low melting points, which enhanced the brazed joint performance. The tensile strength at 980 ℃ of the heat-treated joints reached 654 MPa, which is 88.5 % that of the base metal.http://www.sciencedirect.com/science/article/pii/S0264127523009929Single crystal superalloyHigh-performance brazingMicrostructureProperties |
| spellingShingle | Zhenqian Lang Taiyong Zou Zheng Ye Tao Wu Wanli Wang Jian Yang Jihua Huang High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler material Materials & Design Single crystal superalloy High-performance brazing Microstructure Properties |
| title | High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler material |
| title_full | High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler material |
| title_fullStr | High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler material |
| title_full_unstemmed | High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler material |
| title_short | High-performance brazing of single crystal superalloys with Ni-Cr-Ta filler material |
| title_sort | high performance brazing of single crystal superalloys with ni cr ta filler material |
| topic | Single crystal superalloy High-performance brazing Microstructure Properties |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523009929 |
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