Dissimilar spot welding joints of AZ31-443 ferritic stainless steel with cover plate

In this study, AISI 430 ferritic stainless steel sheet with 0.6 mm thickness was joined by resistance spot welding using different electrode materials. The effects of electrode materials and welding parameters on the mechanical properties of welded samples are defined in terms of peak load. The hardness and tensile shear load bearing capacity of welded joint was determined and the microstructure of welded samples was also evaluated. The most suitable welding parameters for each electrode material were determined.

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Study on Microstructure and Fracture Morphology of 2205 Duplex Stainless Steel Resistance Spot Welds

Materials Science Forum ◽

10.4028/www.scientific.net/msf.804.289 ◽

2014 ◽

Vol 804 ◽

pp. 289-292 ◽

Cited By ~ 1

Author(s):

Xu Chang ◽

Jie Liu ◽

Guang Wei Fan ◽

Ren Long Tao

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Duplex Stainless Steel ◽

Spot Welding ◽

Welding Time ◽

2205 Duplex Stainless Steel ◽

Joint Fracture ◽

Welding Joints ◽

Microstructures And Mechanical Properties ◽

Welding Pressure

Fracture morphologies, microstructures and mechanical properties of the spot welded joints on 2205 duplex stainless steel (2205DSS) were studied by using three-phase inverter resistance welding machine with the welding currents of 6.4kA, 7.4kA, 9.5kA and 11.6kA, the welding pressures of 0.5MPa, 0.6MPa and 0.7MPa, and the welding time of 200ms. The results show that the macroscopic fracture fashion of 2205DSS spot welding joints are mainly button fracture and joint fracture, and the microstructures and mechanical properties of 2205DSS spot welding joints have the best performance with the welding current of 9.5kA, the welding time of 200ms and the welding pressure of 0.6MPa.

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Artificial neural networks for pitting potential prediction of resistance spot welding joints of AISI 304 austenitic stainless steel

Corrosion Science ◽

10.1016/j.corsci.2010.03.013 ◽

2010 ◽

Vol 52 (7) ◽

pp. 2397-2402 ◽

Cited By ~ 22

Author(s):

Óscar Martín ◽

Pilar De Tiedra ◽

Manuel López

Keyword(s):

Neural Networks ◽

Stainless Steel ◽

Artificial Neural Networks ◽

Austenitic Stainless Steel ◽

Resistance Spot Welding ◽

Spot Welding ◽

Pitting Potential ◽

Aisi 304 ◽

304 Austenitic Stainless Steel ◽

Welding Joints

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Investigation of Microstructure and Mechanical Properties of Resistance Spot Welded Dissimilar Joints Between Ferritic Stainless Steel and Weathering Steel

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.766-767.770 ◽

2015 ◽

Vol 766-767 ◽

pp. 770-779 ◽

Cited By ~ 1

Author(s):

A Subrammanian ◽

D.B. Jabaraj ◽

V.K. Bupesh Raja

Keyword(s):

Stainless Steel ◽

Fusion Zone ◽

Ferritic Stainless Steel ◽

Spot Welding ◽

Peak Load ◽

Weathering Steel ◽

Tensile Shear ◽

Dissimilar Joints ◽

Resistance Spot ◽

Mode Of Failure

Resistance spot welding is widely used in automobile and rail car manufacturing industries. In this research work, resistance spot welded dissimilar joints of ferritic stainless steel and weathering steel sheets is investigated for mechanical and metallurgical properties. Ferritic stainless steel AISI 409M and weathering steel corten A (ASTM A 242) of 2mm thickness were used in this work. Spot welding was done at different current values, keeping other parameters such as electrode force, electrode tip diameter and weld time as constant. Test specimens were subjected to tensile shear test and micro hardness test to assess the mechanical properties of the weld joints. The influence of welding current on nugget growth, fusion zone hardness, peak load, and failure energy and failure mode during tensile shear test, was investigated at various current ratings. The results showed that, with increasing value of current, peak load increased correspondingly. Nugget shape was found to be near symmetrical. Nugget diameter was found to be increasing with increase in current, in expulsion free welds. Interfacial mode of failure was noticed at low current values, whereas, at higher current values, pull out mode of failure was observed. Presence of martensite was observed in the fusion zone. Micro hardness values at fusion zone were found to be more than that of both heat affected zones and base metals.

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