Electric resistance spot welding is a simple and fast process that is widely applied on stainless steel sheets. During this process, a high electric current flows between the electrodes through the pressure parts. By the Joule effect, a nugget of molten solder is formed between the welded parts. In this study, AISI 430 ferritic stainless steel sheets were spot welded by electrical resistance with different welding parameters. The effect of the welding current and the holding time during welding on the microstructure and the mechanical properties of the welded joints have been investigated. Tensile tests and micro hardness measurements were carried out to assess the mechanical properties and the breaking characteristics of the welded joints. The obtained results show that the nugget size, the tensile strength of the welded sheets and the micro hardness distribution depend on the welding parameters. The micro structural study allowed us to explain the transformations produced during welding.
Citation
Abdelghani Belhocine ,
Mourad MAAZOUZ ,
Hani BENGUESMIA ,
omar allaoui, , (2024-06-06), Microstructural and mechanical characterization of spot welds on AISI 430 ferritic stainless steel sheets, PRZEGLĄD ELEKTROTECHNICZNY,
Vol:100, Issue:6, pages:4, ISSN (https://portal.issn.org/)
