| Autor: |
Mohamed M.A. Elkhawildi, Ramadan I. Elsoeudy, Abobker M.O. Helmy, A. R. S. Essa |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
JES. Journal of Engineering Sciences. 47:148-156 |
| ISSN: |
2356-8550 |
| DOI: |
10.21608/jesaun.2019.115117 |
| Popis: |
The effects of semi-spherical pin on mechanical properties and microstructure of 7 mm thick friction stir welded dissimilar aluminum alloys AA7075 and AA5083 were investigated. Threee different pin profiles were used to weld three joints of dissimilar AA7075 and AA5083 Al alloys. Semi-spherical pin, cylindrical pin, and pin with round groove. The friction stir welding was performed at 700 rpm rotational speed and 25 mm/min welding speed. Defect-free FSW joint was obtained by using a simple tool with semi-spherical pin. Meanwhile, the crack-like defect is formed in the joints produced by the tools with cylindrical pin, and pin with round groove. The usage of FSW tool with semi-spherical pin (large frictional area of pin) produces a friction stir weld joint with higher tensile strength. When the tool with semi-spherical pin is applied, the grains size was smaller than that when using the other tools. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
