Husain Mehdi

1. Often, engineering parts fail because their surfaces cannot withstand external forces or environmental factors. Certain degradation processes, such as corrosion, erosion (solid and slurry), cavi...

1. The emerging demand for high-strength and lightweight materials has developed a significant focus in manufacturing and modern engineering. Al and Mg alloys have gained significant attention owin...

1. Aluminium alloy is used in rail transportation, automobile manufacturing, automotive and aerospace industries, and other fields due to its high strength, light weight, excellent corrosion resist...

The 5052 aluminum alloy’s outstanding mechanical properties and weldability have made it exceedingly common in a variety of industrial applications. However, shallow penetration issues and coarser grain structure are common with conventional tungsten inert gas (TIG) welding. This work investigates the effects of low-frequency vibration assistance during TIG welding on the impact strength and microstructure of AA5052 weldments in order to overcome these constraints. A dedicated low-frequency vibration-assisted TIG welding (LFV-TIGW) arrangement was established to assess the impact of vibration assistance. 5 mm-thick butt-welded AA5052 plates were utilized in this study and welded at 150, 200, and 250 A welding current with vibrational frequencies ranging from 0 Hz to 100 Hz. To attain the maximum impact strength, the Taguchi optimization technique and response surface methodology (RSM) were applied to optimize the process parameters (vibration frequency, vibration duration, and heat input). Through statistical analysis, signal-to-noise ratio (SNR) and ANOVA, vibration frequency was found to be an important factor influencing the strength and durability of the welded connection. The results reveal that, with a heat input of 169 A, a vibration frequency of 100 Hz, and a vibration duration of 74 s, the optimal impact strength of 8.10 J was experimentally attained, nearly matching the predicted impact strength value of 8.69 J. SEM investigation has confirmed the microstructure refinement brought on by mechanical excitations.