Interface behaviours and mechanical properties of filling friction stir weld joining AA 2219

• DOI: 10.1179/1362171811y.0000000100
• Publication Date: 2012-02-27T22:37:12Z
• Authors: Y X Huang; B Han; S X Lv; J C Feng; H J Liu; J S Leng; Y Li
• Keywords: Keyhole; Friction Stir Welding; Elongation; Interface (matter); Bonding strength

In the present work, 7·8 mm thick AA 2219 rolled plates were successfully joined without keyholes using semiconsumable tools by filling friction stir welding (FFSW). The shoulder further effect was performed to enhance mechanical stir, and properties enhanced effectively. results showed that bonding interface of bit keyhole is defect free. softened region on advanced side weakest part FFSW joint rather than keyhole. average ultimate tensile strength elongation are 172 MPa 11·2%, equal 90 82% base weld defects respectively. Excellent joints have been exhibited.