Effect of tool pin eccentricity on mechanical properties and microstructure of friction stir welded 5754 aluminum alloy | ||||
| Port-Said Engineering Research Journal | ||||
| Article 11, Volume 19, Issue 1, March 2015, Page 108-113 PDF (481.92 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/pserj.2015.36789 | ||||
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| Authors | ||||
| Ahmed Eessa1; Mohamed zeky2; Mohamed Yousif3; Ahmed El-Nikhaily4 | ||||
| 1Dept of Mech, Fac. of Ind. Education, Suez, Suez Univ., Egypt. | ||||
| 22Dept of Metallurgical & Material Eng., Fac. of Petro. & Mining Eng., Suez, Suez Univ., Egypt | ||||
| 3Dept of Mech, Fac. of Ind. Education, Suez, Suez Univ., Egypt. EM: | ||||
| 4Mechanical Department (Production), Faculty of Industrial Education, Suez University | ||||
| Abstract | ||||
| The effect of smooth tool pin eccentricity on mechanical properties and microstructure of 5 mm thick friction stir welded aluminum alloy AA5754-H24 was investigated. Three different tools were used in friction stir welding (FSW), cylindrical tool pin without eccentricity (T0), two cylindrical tool pin with eccentricity of 0.2 mm and, 0.8 mm (T2, T8) were used to weld AA5754-H24 aluminum alloy. The FSW was performed using tool rotation speed of 600 rpm and different welding speeds of 100, 200, 300, and 500 mm/min. After FSW the joints were investigated using tensile testing, hardness testing and optical microscopy. The use of FSW tool pin eccentricity 0.2 mm produces a friction stir weld joint with higher mechanical properties and finer precipitates. The tensile strength increases with increasing welding speed with maximum at 500 mm/min. However, the case is reversed in case of FSW tool pin eccentricity of 0.8 mm, the tensile strength decreases with increasing welding speed | ||||
| Keywords | ||||
| Friction Stir Welding; Tool design; Tool pin eccentricity; Mechanical Properties; Microstructure | ||||
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