The paper aims to investigate the weldability of similar overlapped joints of stainless steel (SS-AISI 304) and copper (Cu-ETP) with thicknesses of 2 and 1 mm in the form of sheet metal. The main criterion was the design of electron beam welding parameters, while several samples were made, varying the welding current in the range of 80–10 mA, welding speed (30–40 mm/s) and beam offset. The samples thus prepared were further analysed by macro and microstructure, the microhardness was measured, and the mechanical properties of the joints were determined, namely the shear strength test. The influence of individual parameters on the weld geometry was monitored. The joints are characterised by the heterogeneity of the weld metal with a large mixing of Cu and SS and the formation of partial porosity. The microhardness of the weld metal was measured in the range 131 - 156 HV0.1. Shear strength was measured and calculated at a range of 552 - 639 MPa. The analysis of the created joints was performed, taking into account the overall quality of welded joints in order to achieve joints without defects and with acceptable mechanical properties.
Electron Beam Welding of Overlapped Joints Copper - Stainless Steel
Lect.Notes Mechanical Engineering
Vehicle and Automotive Engineering ; 2022 ; MISKOLC, Hungary September 08, 2022 - September 09, 2022
10.09.2022
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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