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Investigation on the resistance spot-welded austenitic/ferritic stainless steel |
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| Authors: | Mohammad Hosein Bina Mostafa Jamali Morteza Shamanian Hamed Sabet |
| Affiliation: | 1. Department of Advanced Materials and New Energies, Iranian Research Organization for Science and Technology, Tehran, Iran 2. Department of Materials Engineering, Islamic Azad University-Karaj Branch, Karaj, Iran 3. Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran |
| Abstract: | In this work, the effect of weld current on joining capability of austenitic stainless steel (AISI 304) and ferritic stainless steel (AISI 430) sheets with application of resistance spot welding process was investigated. Macrostructure, microstructure, microhardness, tensile shear strength, and failure mode of welded materials were evaluated for different weld currents. The values of weld current were 2.5, 3.75, and 5 kA. It was found that when the weld current increased, the nugget size and the weld strength were increased. Two distinct failure modes including interfacial and pullout were observed during tensile shear test. Finally, an adequate weld current was obtained. |
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