Abstract
To improve the fracture toughness, “Post weld heat treatment” (PWHT) processes came into existence, but it is time-consuming, more cost, and laborious. To substitute the PWHT, Mechanical excitations are transferred throughout welding progression to enhance the weldment grain formation and fracture toughness. The vibrations are transferred to the molten state of the weld pool before it gets solidified during flux shielded manual arc welding technique (SMAW). The novel vibratory technique is introduced to vibrate the specimens mechanically and impact strength is investigated experimentally. The effect of experimental input process parameters on impact strength was compared with the conventional welding process. Results revealed the Impact strength with excitations is increased by 17% when it is compared with conventional arc welded specimen’s impact strength and the major influencing factor for improved flexural strength is a voltage at 190 V of vibrating-motor, and 18 V of D.C—Motor coupled to electrode. The microstructures of the vibratory weld joints are studied in-depth and compared with conventional prepared SMAW welded joints. Uniform and refined grain structures are identified on welded joints prepared with vibrations.
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Venkata Suresh, B., Shireesha, Y., Srinivasa Rao, P. (2023). Influence of Mechanical Vibrations on Impact Strength of 1018 Mild Steel Butt-Weld-Joints. In: Deepak, B., Bahubalendruni, M.R., Parhi, D., Biswal, B.B. (eds) Recent Trends in Product Design and Intelligent Manufacturing Systems. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-4606-6_58
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DOI: https://doi.org/10.1007/978-981-19-4606-6_58
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