Analysis and Optimization of Process Parameters for Friction Stir Welding of Dissimilar Aluminum 6061 and Commercial Pure Titanium Metal
| dc.contributor.advisor | Henok Zewdu (Mr.) | |
| dc.contributor.author | Dawit Gebeyehu | |
| dc.date.accessioned | 2024-07-31T08:22:32Z | |
| dc.date.available | 2024-07-31T08:22:32Z | |
| dc.date.issued | 2024-06 | |
| dc.description.abstract | Friction stir welding (FSW) is a solid-state weld process were invented in 1991 that broadly used by industries and preferred rather than other weld process due to its capability to weld similar and dissimilar materials under high quality. FSW offers a number of advantages over other weld methods, including being automatic, suitable for most materials, able to be performed in any position, having minimal distortion, and not requiring filler or shielding gas., can be employed under water, and environmentally friendly. In this research, a joint between 6061 aluminium alloy and commercially pure titanium Gr-1 was butt welded by using friction stir welding. at a speed of rotation (1100, 1400, 1600) rpm , a transfer (welding) speed at (50, 60, 80) mm×min-1, a tool pin profile (cylindrical, square, conical), and a dwell time of (5, 10, 15) sec. welded material microstructure and mechanical properties were assessed using the tensile test, the hardness test, and optical microscopy (OM), respectively. Tensile testing, hardness testing, and optical microscopy (OM) were used, respectively; to assess the mechanical characteristics and interfacial microstructure. The numbers of welding experiments were determined using both of the Taguchi and Grey relation analysis approaches. The strength of friction welded dissimilar joints and effect of parameters were analysed using ANOVA (analysis of variance) on Minitab 20 software. After the materials are welded successfully, their tensile strength and hardness were evaluated at room temperature. According to the results, the cylindrical pin profile, 1100-rpm rotational speed, 80 mm/min transverse speed and 15 sec dwell time are the optimal conditions for combining these different joints. In the stir zone, strengthening precipitates were distributed finely and uniformly. | |
| dc.identifier.uri | https://etd.aau.edu.et/handle/123456789/3313 | |
| dc.language.iso | en_US | |
| dc.publisher | Addis Ababa University | |
| dc.subject | Friction Stir Welding (FSW) | |
| dc.subject | Dissimilar Materials | |
| dc.subject | Aluminium | |
| dc.subject | Titanium | |
| dc.subject | Butts Welding | |
| dc.subject | Taguchi Method | |
| dc.subject | Orthogonal Array Grey Analysis. | |
| dc.title | Analysis and Optimization of Process Parameters for Friction Stir Welding of Dissimilar Aluminum 6061 and Commercial Pure Titanium Metal | |
| dc.type | Thesis |