Mechanical Properties and Microstructures on Dissimilar Metal Joints of Stainless Steel 301 and Aluminum Alloy 1100 by Micro-Resistance Spot Welding

PurposeResistance spot welding (RSW) is an essential process in the automobile sector to join the components. The steel is the principal material utilized in car generation because of its high obstruction against erosion, toughness, ease of support and its recuperation potential. Due to this, it was planned to study the mechanical properties, hardness and microstructure characteristics of RSW of Stainless steel 304.Design/methodology/approachIn the present research, RSW of 304 stainless steel plates with 1 mm thickness and effect of current intensity, welding time, electrode pressure and holding time on nugget diameter, tensile strength microhardness and microstructure of the joints was investigated. The specimens were prepared according to the dimensions of 30 × 100 mm with 30 mm overlaps joint through the RSW machine. The tensile test of the specimen was carried out on a universal testing machine and microhardness of specimens measured using Vickers’s hardness tester. Taguchi L16 orthogonal array was used to scrutinize the significant parameters for each output.FindingsIt has been observed that the tensile strength of the specimen is affected by the current intensity and nugget diameter, and the weld time has a significant effect on the tensile strength. Microhardness is highly influenced by electrode pressure and holding time, as the increase in both these parameters resulted in the increase of microhardness. This is due to rapid cooling, which is done by the cooling water flowing through the copper electrodes.Originality/valueThis study was carried out using a copper electrode with a flat face with selected parameters and response factors. The study can be useful for researchers working on optimization of welding parameters on stainless steel.

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Properties of Resistance Spot Welded Joint between Mild Steel and Aluminum Alloy with an Interlayer of AlCu28

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.675-677.15 ◽

2014 ◽

Vol 675-677 ◽

pp. 15-18 ◽

Cited By ~ 1

Author(s):

Long Long Hou ◽

Ran Feng Qiu ◽

Hong Xin Shi ◽

Jun Qing Guo

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Mild Steel ◽

Resistance Spot Welding ◽

Spot Welding ◽

Welded Joint ◽

Welding Parameters ◽

Shear Load ◽

Tensile Shear ◽

Resistance Spot

Aluminum alloy A6061 and mild steel Q235 was welded using resistance spot welding with an interlayer of AlCu28. The mechanical properties of the joint were investigated; the effects of various welding parameters on nugget diameter and tensile shear load of the joints were systematically discussed. The results reveal that it is effective to weld aluminum alloy and mild steel using resistance spot welding with an interlayer of AlCu28.

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Resistance Spot Welding between Titanium and Stainless Steel with an Aluminum Alloy Insert

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.291-294.964 ◽

2011 ◽

Vol 291-294 ◽

pp. 964-967 ◽

Cited By ~ 4

Author(s):

Yi Min Tu ◽

Ran Feng Qiu ◽

Hong Xin Shi ◽

Xin Zhang ◽

Ke Ke Zhang

Keyword(s):

Stainless Steel ◽

Aluminum Alloy ◽

Resistance Spot Welding ◽

Spot Welding ◽

Pure Titanium ◽

Welding Current ◽

Interfacial Microstructure ◽

Commercially Pure Titanium ◽

Resistance Spot ◽

Commercially Pure

The resistance spot welding between commercially pure titanium and stainless steel was achieved using an aluminum alloy insert. The interfacial microstructure and mechanical properties of the joint were investigated. The maximum tensile shear load of 5.38 kN was obtained from the Ti/SUS304 joint welded at the welding current of 10 KA. The results reveal that the property of the Ti/SUS304 joint can be improved by using an aluminum alloy insert between Ti and SUS304 sheet.

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