Abstract
The present work is an investigation towards making the spot welding joint reliable by improving the quality of a welded joint for a commercially available low carbon steel of BIS 513:2008 standard. The focus is to analyze the microstructure of spot welded low carbon steel using tungsten carbide powder. Tensile shear strength was employed to check the failure of such joints. The verification was done through the experimentation using optimized combination of levels for parameters. Tensile tests were performed using instron type UTM machines to give accurate results. Finally, an attempt was made to outline modes of failure for different sets of experiment and preventing them to strength the welded joint making them reliable. The investigation proved the nature of failure in relation with the microstructure of welded component during the loaded condition.
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