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Solid-state bonding of superplastic aluminum alloy 7475 sheet
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Vastava, R. B. Byun, T. D. S. |
| Copyright Year | 1985 |
| Description | Experimental works were carried out to study the feasibility of solid state bonding of superplastic aluminum 7475 sheet. Amount of deformation, bonding time, surface cleaning method and intermediate layer were the process parameters investigated. Other parameters, held constant by the superplastic forming condition which is required to obtain a concurrent solid state bonding, are bonding temperature, bonding pressure and atmosphere. Bond integrity was evaluated through metallographic examination, X-ray line scan analysis, SEM fractographic analysis and lap shear tests. The early results of the development program indicated that sound solid state bonding was accomplished for this high strength 7475 alloy with significant amounts of deformation. A thin intermediate layer of the soft 5052 aluminum alloy aided in achieving a solid state bonding by reducing the required amount of plastic deformation at the interface. Bond strength was substantially increased by a post bond heat treatment. |
| File Size | 944067 |
| Page Count | 21 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860001777 |
| Archival Resource Key | ark:/13960/t95769d70 |
| Language | English |
| Publisher Date | 1985-09-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Superplasticity Tables Data Solid State Pressure Welding Superplastic Forming Metal Bonding Aluminum Metal Sheets Quality Control X Ray Analysis Electron Microscopy Zinc Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
