Abstract
The use of thermoplastics is vastly popular in advanced industrial and aerospace sectors due to unique mechanical properties. The solid-state friction stir welding is seen as one of a kind of the significant joining strategies to overcome heat incited fusion welding deficiencies. This friction stirred solid-state welding method can be effectively used to join poor thermal conductive materials. This work presents the practicability of friction stir butt-welded nylon-6 sheet using cylindrical profile tool pin. Tool rotational speed and tool traverse speed are the key factors which affect the weld strength and micro-hardness variation along the weld centerline. At 1800 rpm, tool rotational speed and 20 mm/min tool traverse speed the highest joint efficiency was found to be 41%. The weld joint strength was discovered poor at low tool rotational speed and high traverse speed; however, both the process variables were significant over joint quality. The maximum number of failures during tensile test was found advancing side of the weld zone. The stress-elongation outline specified a brittle failure in the heat-affected weld interface welds. The joint efficiency has, however, been found to be reduced significantly due to predominant material gather up from advancing to retreating side along with significant hardness variation from stirred weld zone to heat-affected zone as per hardness deviation graph.
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Acknowledgments
The welding experiments and post-weld measurement works have been carried out with the assistance and facilities at Friction Stir Welding Laboratory and Metrology Laboratory, IIT-Kharagpur.
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Sahu, S.K., Pal, K., Das, S., Tripathy, A. (2021). Study on Mechanical Behavior of Friction Stir Welded Nylon-6 Sheets. In: Narasimham, G.S.V.L., Babu, A.V., Reddy, S.S., Dhanasekaran, R. (eds) Recent Trends in Mechanical Engineering . Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-7557-0_13
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DOI: https://doi.org/10.1007/978-981-15-7557-0_13
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