Details

Autor(en) / Beteiligte

• Yuan, Tao
• Kang, Shaoqian
• Jiang, Xiaoqing
• Zhao, Pengjing

Titel

Exit-hole repairing in 7475 aluminium alloy welded joints based on refill friction stir processing

Ist Teil von

• Science and technology of welding and joining, 2023-11, Vol.ahead-of-print (ahead-of-print), p.1-10

Ort / Verlag

London, England: Taylor & Francis

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Taylor & Francis

Beschreibungen/Notizen

• In this study, the refill friction stir processing (RFSP) method was utilised to repair a exit-hole defect located at the end of the friction stir welding (FSW) joints in 7475 aluminium alloy plate. The morphology, macroscopic defects, and mechanical properties of the repaired joints were investigated. The results demonstrate that the exit-hole was successfully refilled after RFSP. Material flow caused the refill voids, annular grooves, and un-stirred material defects. The maximum strength reached 415 Mpa, equal to 105% of the base defect-free weld. The mechanical properties of repaired joint were largely influenced by the stir zone (SZ) boundary and un-stirred material defects.