Resistance Spot Welding of Dissimilar Alloys 1008 Low Carbon Steel- 1100 Aluminum Alloy

2021 ◽  
Vol 1039 ◽  
pp. 144-158
Author(s):  
Hiba Kareem Jabber ◽  
Eman Jabber Al-Shaibani
Keyword(s):  
Carbon Steel ◽  
Spot Welding ◽  
Shear Force ◽  
Low Carbon Steel ◽  
Welding Current ◽  
Low Carbon ◽  
Tensile Shear ◽  
Electrode Force ◽  
Dissimilar Alloys ◽  
Weld Time

The resistance spot welding is adopted to joint dissimilar alloys such as aluminum alloy 1100 , and low carbon steel alloy 1008 by using cover plate. This study aims to optimization the best conditions of dissimilar welding of Aluminum with low carbon steel by RSW, and improving the properties of joints by many method. three different variables were used for the welding process: welding current (5, 6 ,7 and 8 KA), weld time (0.5, 1 and 1.5 sec) and electrode force (13.2 and 15.5 N).The welding joints are ―examined by a scanning electron microscope SEM and a X-ray diffraction‖ for the purpose of discussing the causes of the improved characteristics. The results revealed that the best welding conditions were under welding current 7 KA , weld time 1 sec and electrode force 13.2 KN, where the joint possessed the maximum shear force (4.8KN) and after improvement the tensile shear force become (6.02 KN), in addition to presence of the intermetallic compounds at optimum condition , such as AlFe3,Al5Fe4 and Al13Fe4, in the joint layer between dissimilar metal improves of the tensile shear forces and hardness in fusion zone.

scholarly journals Optimization of Tensile-Shear Strength in the Dissimilar Joint of Zn-Coated Steel and Low Carbon Steel

2020 ◽  
Vol 3 (3) ◽  
pp. 115-125
Author(s):  
Sukarman Sukarman ◽  
Amri Abdulah ◽  
Jatira Jatira ◽  
Dede Ardi Rajab ◽  
Rohman Rohman ◽  
...  
Keyword(s):  
Shear Strength ◽  
Carbon Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Low Carbon Steel ◽  
Welding Current ◽  
Welding Time ◽  
Tensile Shear Strength ◽  
Low Carbon ◽  
Tensile Shear

The present study features analytical and experimental results of optimizing resistance spot welding performed using a pneumatic force system (PFS). The optimization was performed to join SECC-AF (JIS G 3313) galvanized steel material with SPCC-SD low carbon steel. The SECC-AF is an SPCC-SD (JIS G 3141) sheet plate coated with zinc (Zn) with a thickness of about 2.5 microns. The zinc coating on the metal surface causes its weldability to decrease. This study aims to obtain the highest tensile-shear strength test results from the combination of the specified resistance spot welding parameters. The research method used the Taguchi method using four variables and a combination of experimental levels. The experimental levels are 2-levels for the first parameter and 3-levels for other parameters. The Taguchi optimization experimental results achieved the highest tensile-shear strength at 5049.64 N. It properly worked at 22 squeeze time cycles, 25 kA of welding current, and 0.6-second welding time and 12 holding-time cycles. The S/N ratio analysis found that the welding current had the most significant effect, followed by welding time, squeeze time, and holding time. The delta S/N ratio values were 1.05, 0.67, 0.57 and 0.29, respectively.

scholarly journals Resistance spot welding of dissimilar alloys 1008 low carbon steel5052 aluminum alloy

2018 ◽  
Vol 8 (02) ◽  
Author(s):  
Mohammad Jameel Zedan ◽  
Qasim M. Doos
Keyword(s):  
Aluminum Alloy ◽  
Carbon Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Low Carbon Steel ◽  
Welding Current ◽  
Intermetallic Compound Layer ◽  
Low Carbon ◽  
Resistance Spot ◽  
Dissimilar Alloys

The resistance spot welding is adopted to joint dissimilar alloys such as aluminum alloy 5052, and low carbon steel alloy 1008. In this work, the electrodes force 2100-2700 N, the welding current 7.5-10.5 KA, and welding time 10-20 cycle have been used. The relationships between the three parameters have been studied. The maximum tensile shear load of the aluminum alloy 5052-low carbon steel 1008 joint has been found equal to 2860 N for weld nugget diameter of 9 mm. The intermetallic compound layer (IMC) with 2-8 μm thickness with tongue-like has been appeared adjacent to the 1008 low carbon steel side, whereas a needle-shaped IMC layer adjacent to the aluminum alloy 5052 side

Resistance Spot Welding of Unequal Thickness Low Carbon Steel Sheets

2009 ◽  
Vol 83-86 ◽  
pp. 1205-1211 ◽  
Author(s):  
Majid Pouranvari ◽  
Pirooz Marashi
Keyword(s):  
Carbon Steel ◽  
Spot Welding ◽  
Peak Load ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Tensile Shear ◽  
Spot Welds ◽  
Resistance Spot ◽  
Resistance Spot Welds ◽  
Dissimilar Thickness

Resistance spot welding is the dominant process for joining sheet metals in automotive industry. Even-thickness combinations are rarely used in practice; therefore, there is clearly a practical need for failure behaviour investigation of uneven-thickness resistance spot welds. The aim of this paper is to investigate and analyze the failure mode and failure mechanism of dissimilar thickness low carbon steel resistance spot welds during tensile-shear overload test. Microstructural investigations, microhardness tests and tensile-shear tests were conducted. Mechanical properties of the joint were described in terms of peak load, energy absorption and failure mode. It was concluded that weld nugget size and the strength of the thinner base metal are the controlling factors of the peak load and energy absorption of dissimilar thickness spot welds.

Dissimilar resistance spot welding of AISI 304 to AISI 409 stainless steels: mechanical properties and microstructural evolutions

2018 ◽  
Vol 115 (6) ◽  
pp. 610 ◽  
Author(s):  
Mehdi Safari ◽  
Hossein Mostaan ◽  
Abdoreza Ghaderi
Keyword(s):  
Stainless Steels ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Steel Sheet ◽  
Welding Current ◽  
Stainless Steel Sheet ◽  
Tensile Shear ◽  
Aisi 304 ◽  
Resistance Spot ◽  
Electrode Force

In this work, dissimilar resistance spot welding of austenitic stainless steel sheet (304 grade) and ferritic stainless steel sheet (409 grade) is studied experimentally. For this purpose, the effects of process parameters such as welding current, welding time and electrode force on tensile-shear strength of resistance spot welded joints are investigated with response surface methodology (RSM). Also, microstructural evolutions during resistance spot welding process of AISI 409 and AISI 304 stainless steels are evaluated by optical microscopy. It is concluded from results that the tensile-shear strength of spot welds is increased with increasing the welding current, welding time and electrode force. It is shown that widmanstatten ferrites have been grown in the weld metal of dissimilar resistance spot welds of AISI 304 and AISI 409 stainless steels.

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