Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloy
The robust and reliable joining of carbon/carbon (C/C) composites and metals has important application value in the aerospace field. However, the low interface bonding strength when joining the two dissimilar materials remains a persistent problem and leads to low joint strength. In this work, a nov...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522007237 |
| _version_ | 1811254944419807232 |
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| author | Zhihang Hou Wanli Wang Duohuan Niu Zheng Ye Jian Yang Shuhai Chen Jihua Huang |
| author_facet | Zhihang Hou Wanli Wang Duohuan Niu Zheng Ye Jian Yang Shuhai Chen Jihua Huang |
| author_sort | Zhihang Hou |
| collection | DOAJ |
| description | The robust and reliable joining of carbon/carbon (C/C) composites and metals has important application value in the aerospace field. However, the low interface bonding strength when joining the two dissimilar materials remains a persistent problem and leads to low joint strength. In this work, a novel interface strengthened brazing process has been developed for joining a C/C composite and a nickel-based superalloy (GH3044). Before joining, high-strength molybdenum (Mo) fibers are planted on the surface of the C/C composite, then the fiber-treated C/C composite is brazed to the GH3044 superalloy using a BNi-2 filler. The results show that a sound joint with robust Mo fibers crossing the interface between the C/C substrate and the brazing layer is obtained. Owing to the pinning effect of the Mo fibers, the joining interface area is increased and cracking is effectively prevented. As a result, the bonded joint exhibits excellent mechanical properties. The maximum shear strength of the joint was measured to be 60 MPa, which is 2.14-times that of the joint without fiber-planting. The maximum three-point bending strength of the joint was measured at 31 MPa, which is 2.58-times that of the joint without fiber-planting. |
| first_indexed | 2024-04-12T17:15:21Z |
| format | Article |
| id | doaj.art-ca84e4540597401594b2a5fdfdef1c0f |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-12T17:15:21Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-ca84e4540597401594b2a5fdfdef1c0f2022-12-22T03:23:40ZengElsevierMaterials & Design0264-12752022-10-01222111101Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloyZhihang Hou0Wanli Wang1Duohuan Niu2Zheng Ye3Jian Yang4Shuhai Chen5Jihua Huang6School 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, 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, ChinaThe robust and reliable joining of carbon/carbon (C/C) composites and metals has important application value in the aerospace field. However, the low interface bonding strength when joining the two dissimilar materials remains a persistent problem and leads to low joint strength. In this work, a novel interface strengthened brazing process has been developed for joining a C/C composite and a nickel-based superalloy (GH3044). Before joining, high-strength molybdenum (Mo) fibers are planted on the surface of the C/C composite, then the fiber-treated C/C composite is brazed to the GH3044 superalloy using a BNi-2 filler. The results show that a sound joint with robust Mo fibers crossing the interface between the C/C substrate and the brazing layer is obtained. Owing to the pinning effect of the Mo fibers, the joining interface area is increased and cracking is effectively prevented. As a result, the bonded joint exhibits excellent mechanical properties. The maximum shear strength of the joint was measured to be 60 MPa, which is 2.14-times that of the joint without fiber-planting. The maximum three-point bending strength of the joint was measured at 31 MPa, which is 2.58-times that of the joint without fiber-planting.http://www.sciencedirect.com/science/article/pii/S0264127522007237C/C compositeGH3044 superalloyBrazingMo fiberPinning effect |
| spellingShingle | Zhihang Hou Wanli Wang Duohuan Niu Zheng Ye Jian Yang Shuhai Chen Jihua Huang Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloy Materials & Design C/C composite GH3044 superalloy Brazing Mo fiber Pinning effect |
| title | Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloy |
| title_full | Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloy |
| title_fullStr | Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloy |
| title_full_unstemmed | Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloy |
| title_short | Molybdenum-fiber strengthened brazing of carbon/carbon composite and nickel-based superalloy |
| title_sort | molybdenum fiber strengthened brazing of carbon carbon composite and nickel based superalloy |
| topic | C/C composite GH3044 superalloy Brazing Mo fiber Pinning effect |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522007237 |
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