Home Kovove Materialy-Metallic Materials 2019 Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 6, pp.397–405

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Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 6, pp.397–405

Title: Investigations on small-scaled welded structures of austenitic stainless steel
Author: U. Reisgen, K. Willms, J. Schäfer, M. Turker, J. Hegger, M. Classen, M. Feldmann, M. Kopp

Abstract: The present study describes the process characteristics of the Cold-Metal-Transfer (CMT) Pin-Welding by welding structures on austenitic stainless steel (AISI 304) and characterizes the corresponding mechanical properties. Pin-Welding technology enables the possibility of welding small-scaled structures out of the welding wire. The mechanical properties and microstructures of the welded structures were investigated on different pin formations. Experimental samples extracted from the welded structure were subjected to tensile and hardness tests and microstructural examinations. Tensile test results were obtained lower than the welding wire owing to the process heat input, but both presented similar proportional results. The structures hardness formed out of wire diameter of 0.8 mm and 1.2 mm was obtained in an interval between 200–250 HV. Because the base metal has nearly similar hardness values, the whole structure exhibits a stable hardness distribution after the welding process.

Keywords: welding, joining, austenitic steels, stainless steels, mechanical properties
Published online: 20-Nov-2019
Year: 2019, Volume: 57, Issue: 6 Page From: 397, Page To: 405

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