Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 joint
Nickel-based superalloy (GH4169) and Si3N4 ceramics were connected by AgCuTi composite active filler and high purity W foil which acts as interlayer. The effects of temperature on the microstructure evolution and mechanical properties of GH4169/ Si3N4 brazed joint were systematically studied. The re...
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| Format: | Article |
| Language: | zho |
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Journal of Aeronautical Materials
2022-12-01
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| Series: | Journal of Aeronautical Materials |
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| Online Access: | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000035 |
| _version_ | 1798014057587933184 |
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| author | XUE Yang ZHU Dongdong TAO Feng DONG Duo WANG Xiaohong MA Tengfei |
| author_facet | XUE Yang ZHU Dongdong TAO Feng DONG Duo WANG Xiaohong MA Tengfei |
| author_sort | XUE Yang |
| collection | DOAJ |
| description | Nickel-based superalloy (GH4169) and Si3N4 ceramics were connected by AgCuTi composite active filler and high purity W foil which acts as interlayer. The effects of temperature on the microstructure evolution and mechanical properties of GH4169/ Si3N4 brazed joint were systematically studied. The results show that the effective connection of GH4169/Si3N4 brazed joint can be realized by using AgCuTi+W composite filler. The microstructure of the joint is GH4169/TiNi3+TiCu+TiCu2+Ag(s, s)+Cu(s, s)+W+TiN+Ti5Si3/Si3N4. When the brazing temperature is low, the Ti element in liquid filler diffuses to less of the ceramic interface with the filler, and no obvious reaction layer is formed； when the brazed temperature increases to 880 ℃, Ti is enriched on the ceramic side, forming a thickness of 2 μm TiN and Ti5Si3 reaction layer. At this time, the shear strength of the joint is the highest, reaching 190.9 MPa. With the increase in brazing temperature, the content of Ti-Cu compound，which is a brittle compound, increases and the mechanical properties of the joint are greatly reduced. The fracture results show that during the shear process, the crack initiates in the interlayer, and then diffuses into the Si3N4 ceramic matrix， and finally breaks on the side of Si3N4 ceramic. |
| first_indexed | 2024-04-11T15:12:29Z |
| format | Article |
| id | doaj.art-39c6dc5b1df2426d83a54fe9f5c6c9a6 |
| institution | Directory Open Access Journal |
| issn | 1005-5053 |
| language | zho |
| last_indexed | 2024-04-11T15:12:29Z |
| publishDate | 2022-12-01 |
| publisher | Journal of Aeronautical Materials |
| record_format | Article |
| series | Journal of Aeronautical Materials |
| spelling | doaj.art-39c6dc5b1df2426d83a54fe9f5c6c9a62022-12-22T04:16:36ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50532022-12-01426485610.11868/j.issn.1005-5053.2022.0000352022-0035Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 jointXUE Yang0ZHU Dongdong1TAO Feng2DONG Duo3WANG Xiaohong4MA Tengfei5School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, ChinaCollege of Mechanical Engineering, Quzhou University, Quzhou 324000, Zhejiang, ChinaSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, ChinaCollege of Mechanical Engineering, Quzhou University, Quzhou 324000, Zhejiang, ChinaCollege of Mechanical Engineering, Quzhou University, Quzhou 324000, Zhejiang, ChinaCollege of Mechanical Engineering, Quzhou University, Quzhou 324000, Zhejiang, ChinaNickel-based superalloy (GH4169) and Si3N4 ceramics were connected by AgCuTi composite active filler and high purity W foil which acts as interlayer. The effects of temperature on the microstructure evolution and mechanical properties of GH4169/ Si3N4 brazed joint were systematically studied. The results show that the effective connection of GH4169/Si3N4 brazed joint can be realized by using AgCuTi+W composite filler. The microstructure of the joint is GH4169/TiNi3+TiCu+TiCu2+Ag(s, s)+Cu(s, s)+W+TiN+Ti5Si3/Si3N4. When the brazing temperature is low, the Ti element in liquid filler diffuses to less of the ceramic interface with the filler, and no obvious reaction layer is formed； when the brazed temperature increases to 880 ℃, Ti is enriched on the ceramic side, forming a thickness of 2 μm TiN and Ti5Si3 reaction layer. At this time, the shear strength of the joint is the highest, reaching 190.9 MPa. With the increase in brazing temperature, the content of Ti-Cu compound，which is a brittle compound, increases and the mechanical properties of the joint are greatly reduced. The fracture results show that during the shear process, the crack initiates in the interlayer, and then diffuses into the Si3N4 ceramic matrix， and finally breaks on the side of Si3N4 ceramic.http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000035nickel-base superalloysi3n4 ceramicsbrazingmicrostructuremechanical property |
| spellingShingle | XUE Yang ZHU Dongdong TAO Feng DONG Duo WANG Xiaohong MA Tengfei Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 joint Journal of Aeronautical Materials nickel-base superalloy si3n4 ceramics brazing microstructure mechanical property |
| title | Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 joint |
| title_full | Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 joint |
| title_fullStr | Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 joint |
| title_full_unstemmed | Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 joint |
| title_short | Effect of brazing temperature on microstructure and mechanical properties of GH4169/AgCuTi+W/Si3N4 joint |
| title_sort | effect of brazing temperature on microstructure and mechanical properties of gh4169 agcuti w si3n4 joint |
| topic | nickel-base superalloy si3n4 ceramics brazing microstructure mechanical property |
| url | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000035 |
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