| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solid-State Diffusion Bonding of Metals and Alloys
|
| Presentation Title |
Diffusion Bonding of an AA7075 Aluminium Alloy |
| Author(s) |
Yan Huang |
| On-Site Speaker (Planned) |
Yan Huang |
| Abstract Scope |
An AA7075 aluminium alloy was diffusion bonded in both as hot-rolled and superplastic states, using a specific surface treatment method and bonds having base metal strength and microstructure have been achieved. The starting microstructures were found to have strong impact on the bonding process and the bond quality. In-situ high temperature optical microscopy and EBSD studies showed that the elimination of the initial bond interface was realized by the migration of unstable interfacial triple junctions in the superplastic state with an equiaxed fine grain structure, whereas, in the hot-rolled material, the controlling process for the formation of the metallurgical bond was found to be the recrystallization initiated from the bond region. The results of bond strength tests and microstructural examinations are presented in the paper and the effect of the starting microstructures on bonding mechanisms and kinetics is discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Aluminum, Characterization |