Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler Metal
Vacuum brazing of TiAl intermetallic alloy to Si<sub>3</sub>N<sub>4</sub> ceramics was performed using Ag-28Cu (wt.%) filler alloy. The brazing joints obtained at different brazing temperatures were studied in this work. The microstructure and the shear strength were analyzed...
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MDPI AG
2018-11-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/8/11/896 |
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| author | Duo Dong Dongdong Zhu Ye Wang Gang Wang Peng Wu Qing He |
| author_facet | Duo Dong Dongdong Zhu Ye Wang Gang Wang Peng Wu Qing He |
| author_sort | Duo Dong |
| collection | DOAJ |
| description | Vacuum brazing of TiAl intermetallic alloy to Si<sub>3</sub>N<sub>4</sub> ceramics was performed using Ag-28Cu (wt.%) filler alloy. The brazing joints obtained at different brazing temperatures were studied in this work. The microstructure and the shear strength were analyzed in detail. The results show that the brazed joints could be divided into three regions: AlCu<sub>2</sub>Ti reaction layer near the Ti-48Al-2Cr-2Nb alloy, a typical Ag-Cu eutectic structure and a thin continuous TiN + Ti<sub>5</sub>Si<sub>3</sub> reaction layer near the Si<sub>3</sub>N<sub>4</sub> ceramics. The microstructure varied as the brazing temperature was increased from 1153 K/15 min to 1193 K/15 min. The shear strength of the joints first increased as the brazing temperature increased from 1153 K to 1173 K, and then decreased. The maximum shear strength reached 105.5 MPa at 1173 K/15 min and the mechanism was discussed. |
| first_indexed | 2024-12-12T16:27:42Z |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-12T16:27:42Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-034ccd6700b44e40912e933333c3b0082022-12-22T00:18:51ZengMDPI AGMetals2075-47012018-11-0181189610.3390/met8110896met8110896Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler MetalDuo Dong0Dongdong Zhu1Ye Wang2Gang Wang3Peng Wu4Qing He5Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, ChinaKey Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150001, ChinaSchool of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu 241000, ChinaSchool of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu 241000, ChinaKey Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, ChinaVacuum brazing of TiAl intermetallic alloy to Si<sub>3</sub>N<sub>4</sub> ceramics was performed using Ag-28Cu (wt.%) filler alloy. The brazing joints obtained at different brazing temperatures were studied in this work. The microstructure and the shear strength were analyzed in detail. The results show that the brazed joints could be divided into three regions: AlCu<sub>2</sub>Ti reaction layer near the Ti-48Al-2Cr-2Nb alloy, a typical Ag-Cu eutectic structure and a thin continuous TiN + Ti<sub>5</sub>Si<sub>3</sub> reaction layer near the Si<sub>3</sub>N<sub>4</sub> ceramics. The microstructure varied as the brazing temperature was increased from 1153 K/15 min to 1193 K/15 min. The shear strength of the joints first increased as the brazing temperature increased from 1153 K to 1173 K, and then decreased. The maximum shear strength reached 105.5 MPa at 1173 K/15 min and the mechanism was discussed.https://www.mdpi.com/2075-4701/8/11/896TiAl alloyAg-CubrazingmicrostructureSi<sub>3</sub>N<sub>4</sub> |
| spellingShingle | Duo Dong Dongdong Zhu Ye Wang Gang Wang Peng Wu Qing He Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler Metal Metals TiAl alloy Ag-Cu brazing microstructure Si<sub>3</sub>N<sub>4</sub> |
| title | Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler Metal |
| title_full | Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler Metal |
| title_fullStr | Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler Metal |
| title_full_unstemmed | Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler Metal |
| title_short | Microstructure and Shear Strength of Brazing TiAl/Si<sub>3</sub>N<sub>4</sub> Joints with Ag-Cu Binary Alloy as Filler Metal |
| title_sort | microstructure and shear strength of brazing tial si sub 3 sub n sub 4 sub joints with ag cu binary alloy as filler metal |
| topic | TiAl alloy Ag-Cu brazing microstructure Si<sub>3</sub>N<sub>4</sub> |
| url | https://www.mdpi.com/2075-4701/8/11/896 |
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