The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components
Diffusion bonding experiments followed by tensile testing were conducted on cylindrical pairs of AA6061–AA1050 aluminum alloys. The influence of bonding time, atmosphere and surface roughness on the resulting interface strength was studied. Metallurgical characterization was performed to study the q...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/2/769 |
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| author | Michael Ben-Haroush Brigit Mittelman Roni Shneck Elad Priel |
| author_facet | Michael Ben-Haroush Brigit Mittelman Roni Shneck Elad Priel |
| author_sort | Michael Ben-Haroush |
| collection | DOAJ |
| description | Diffusion bonding experiments followed by tensile testing were conducted on cylindrical pairs of AA6061–AA1050 aluminum alloys. The influence of bonding time, atmosphere and surface roughness on the resulting interface strength was studied. Metallurgical characterization was performed to study the quality of the bonded interface for different process conditions, and also to investigate the process of oxide formation on the specimen surface. Finite element analysis of the bonding experiments was used to study the thermo-mechanical fields during the bonding process. Using a cohesive zone approach for modelling the bonded interface, the bond strength for the different process parameters was quantified. The results demonstrate that high bond strength can be obtained even for specimens bonded in an air furnace, provided the surface roughness is low. When the surface roughness increases, specimens bonded in air show a reduction in interface strength, which is not observed for specimens bonded in vacuum. Inspection of the bonded interface suggests that this reduction in interface strength can be attributed to oxidation and pockets of air trapped between the asperities of the contact surface, which hinder diffusion and plastic flow. |
| first_indexed | 2024-03-09T11:48:29Z |
| format | Article |
| id | doaj.art-7852d302048849b9aa1388bb27a6da5d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:48:29Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-7852d302048849b9aa1388bb27a6da5d2023-11-30T23:17:55ZengMDPI AGMaterials1996-19442023-01-0116276910.3390/ma16020769The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded ComponentsMichael Ben-Haroush0Brigit Mittelman1Roni Shneck2Elad Priel3Department of Materials, Nuclear Research Center Negev (NRCN), Be’er-Sheva 84190, IsraelDepartment of Materials, Nuclear Research Center Negev (NRCN), Be’er-Sheva 84190, IsraelDepartment of Materials Engineering, Ben-Gurion University of the Negev, Be’er-Sheva 84105, IsraelDepartment of Materials, Nuclear Research Center Negev (NRCN), Be’er-Sheva 84190, IsraelDiffusion bonding experiments followed by tensile testing were conducted on cylindrical pairs of AA6061–AA1050 aluminum alloys. The influence of bonding time, atmosphere and surface roughness on the resulting interface strength was studied. Metallurgical characterization was performed to study the quality of the bonded interface for different process conditions, and also to investigate the process of oxide formation on the specimen surface. Finite element analysis of the bonding experiments was used to study the thermo-mechanical fields during the bonding process. Using a cohesive zone approach for modelling the bonded interface, the bond strength for the different process parameters was quantified. The results demonstrate that high bond strength can be obtained even for specimens bonded in an air furnace, provided the surface roughness is low. When the surface roughness increases, specimens bonded in air show a reduction in interface strength, which is not observed for specimens bonded in vacuum. Inspection of the bonded interface suggests that this reduction in interface strength can be attributed to oxidation and pockets of air trapped between the asperities of the contact surface, which hinder diffusion and plastic flow.https://www.mdpi.com/1996-1944/16/2/769solid-state diffusion bondingbonding strengthAl alloysoxide filmFE |
| spellingShingle | Michael Ben-Haroush Brigit Mittelman Roni Shneck Elad Priel The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components Materials solid-state diffusion bonding bonding strength Al alloys oxide film FE |
| title | The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components |
| title_full | The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components |
| title_fullStr | The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components |
| title_full_unstemmed | The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components |
| title_short | The Influence of Time, Atmosphere and Surface Roughness on the Interface Strength and Microstructure of AA6061–AA1050 Diffusion Bonded Components |
| title_sort | influence of time atmosphere and surface roughness on the interface strength and microstructure of aa6061 aa1050 diffusion bonded components |
| topic | solid-state diffusion bonding bonding strength Al alloys oxide film FE |
| url | https://www.mdpi.com/1996-1944/16/2/769 |
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