Combined effect of resistance spot welding and precipitation hardening on tensile shear load bearing capacity of A286 superalloy

2017 ◽  
Vol 688 ◽  
pp. 309-314 ◽  
Author(s):  
Óscar Martín ◽  
Pilar De Tiedra ◽  
Manuel San-Juan
Keyword(s):  
Bearing Capacity ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Precipitation Hardening ◽  
Combined Effect ◽  
Shear Load ◽  
Tensile Shear ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Resistance Spot

scholarly journals Optimization of resistance spot welding parameters for microalloyed steel sheets

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Ján Viňáš ◽  
Ľuboš Kaščák ◽  
Miroslav Greš
Keyword(s):  
Bearing Capacity ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Microalloyed Steel ◽  
Welding Time ◽  
Spot Welds ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Resistance Spot ◽  
Steel Sheets

Abstract The paper presents the results of resistance spot welding of hot-dip galvanized microalloyed steel sheets used in car body production. The spot welds were made with various welding currents and welding time values, but with a constant pressing force of welding electrodes. The welding current and welding time are the dominant characteristics in spot welding that affect the quality of spot welds, as well as their dimensions and load-bearing capacity. The load-bearing capacity of welded joints was evaluated by tensile test according to STN 05 1122 standard and dimensions and inner defects were evaluated by metallographic analysis by light optical microscope. Thewelding parameters of investigated microalloyed steel sheets were optimized for resistance spot welding on the pneumatic welding machine BPK 20.

Clinching of Dual-Phase Steels as an Alternative to Resistance Spot Welding

2018 ◽  
Vol 919 ◽  
pp. 68-77
Author(s):  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Janka Majerníková ◽  
René Kubík
Keyword(s):  
Bearing Capacity ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Dual Phase ◽  
Load Bearing Capacity ◽  
Dual Phase Steels ◽  
Load Bearing ◽  
Car Body ◽  
Resistance Spot ◽  
Body Production

Resistance spot welding is the dominant method for joining the materials in the car body production. Progressive materials are being developed to improve the car’s fuel consumption and the safety of passengers as well. Advanced high strength dual-phase steels are such materials. Despite of the dominancy of resistance spot welding in car body production, innovative methods are being developed to reduce the joining time, process costs and improve the load-bearing capacity of a particular joint. Mechanical clinching is such process. The research focused on the evaluation of the possibility of clinching as an alternative method to the resistance spot welding. Experimental samples were prepared from dual-phase steel sheets DP600. The samples were tested by uniaxial tensile test, microhardness test and metallographic observations. Both joining methods have advantages and disadvantages which could destine them for specific utilization. Clinching joining is a progressive, fast and low-cost technique, but the joint’s load-bearing capacity is lower when compared to resistance spot weld.

scholarly journals RSW Junctions of Advanced Automotive Sheet Steel by Using Different Electrode Pressures

2018 ◽  
Vol 8 (5) ◽  
pp. 3492-3495
Author(s):  
A. Alzahougi ◽  
M. Elitas ◽  
B. Demir
Keyword(s):  
Mechanical Properties ◽  
Bearing Capacity ◽  
Sheet Steel ◽  
Shear Load ◽  
Tensile Shear ◽  
Load Bearing Capacity ◽  
Maximum Displacement ◽  
Load Bearing ◽  
Current Value ◽  
Welding Processes

Based on this study, the effects of the different types of welding currents and electrode pressures on the tensile shear properties of the resistance spot welding (RSW) which are the joints of the commercial DP600 sheet steel are now been investigated. In addition to the fact that the electrode pressure is not much of a popular piece or topic of discussion in the literature, the expression of the mechanical properties of these commercial materials (most importantly in the DP and in the high strength steels). These factors that are known to be affecting the strength of the material are dispute. In the tensile shear tests of this welded joints; the tensile shear force and the maximum displacement were utilized to characterize the performance of the welding processes. The nugget diameter has been measured to create a clear definition of the RSW physical properties. The experimental results show that the tensile shear load bearing capacity is bond to increase as the electrode pressure increases based on a value in both the welding currents and the decrease at the higher values. The low current value at low and at the highest electrode pressures; during the high current value which could be at the middle of the electrode pressure values it can exhibit the superior mechanical properties. The effect of this electrode pressure on the tensile shear load bearing capacity is bond to increase as the welding current increases as well. This, also been assessed and examined based on the low carbon content.

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

2014 ◽  
Vol 675-677 ◽  
pp. 15-18 ◽  
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.

Optimization of Parameters and Research on Joint Microstructure of Resistance Spot Welding for 316 Stainless Steel

2013 ◽  
Vol 652-654 ◽  
pp. 2326-2329 ◽  
Author(s):  
Hui Liu ◽  
Xue Dong Xu ◽  
Xiao Qing Zhang
Keyword(s):  
Stainless Steel ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Current ◽  
Shear Load ◽  
Welding Time ◽  
Tensile Shear ◽  
316 Stainless Steel ◽  
Resistance Spot ◽  
Electrode Force

The experimental investigations on resistance spot welding are presented for 316 stainless steel. The influence of spot welding parameters (welding time, electrode force and welding current) on the tensile shear load and the diameter of nugget have been researched, based on an orthogonal test and analysis method. The results show that welding current has significant influence on the tensile shear load and diameter of nugget, and then is electrode force, welding time in turn. The optimum parameters are as follows: welding time is 5 cycles, electrode force is 3.5KN and welding current is 5.5KA. And the maximum tensile shear force of joint is up to 13.55KN.

Properties of Light Metal Joint Welded by Thermal Compensation Resistance Spot Welding

2011 ◽  
Vol 230-232 ◽  
pp. 1084-1088
Author(s):  
Yi Min Tu ◽  
Ran Feng Qiu ◽  
Hong Xin Shi ◽  
Hua Yu ◽  
Ke Ke Zhang
Keyword(s):  
Aluminum Alloy ◽  
Magnesium Alloy ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Light Metal ◽  
Welding Parameters ◽  
Shear Load ◽  
Thermal Compensation ◽  
Tensile Shear ◽  
Resistance Spot

A new technique of thermal compensation resistance spot welding was used to weld light metal such as aluminum alloy sheet and magnesium alloy. The effects of welding parameters on the tensile shear strength of joint and nugget diameter were investigated. The tensile shear load and nugget of the joint increased with the increasing of welding time, whereas that of the joint decreased with the increasing of electrode force. The joint with the maximum tensile shear load of approximately 5 kN was obtained at the condition of 12 kA and 11 kA welding current for aluminum alloy and magnesium alloy, respectively. The results reveal that the thermal compensation resistance spot welding is a feasible method to weld aluminum alloy and magnesium alloy..

scholarly journals The Effects of the Welding Parameters on Tensile Properties of RSW Junctions of DP1000 Sheet Steel

2018 ◽  
Vol 8 (4) ◽  
pp. 3116-3120 ◽  
Author(s):  
M. Elitas ◽  
B. Demir
Keyword(s):  
Bearing Capacity ◽  
Sheet Steel ◽  
Welding Parameters ◽  
Shear Load ◽  
Tensile Shear ◽  
Load Bearing Capacity ◽  
Shear Properties ◽  
Load Bearing ◽  
Negative Effect ◽  
Weld Current

In this study, the maximum tensile shear load bearing capacity of the resistance spot welded DP1000 steel was measured and the tensile shear properties of the joints were evaluated. The effects of different welding parameters on microstructure, microhardness and tensile shear properties were investigated. Weld processes were performed by using 5kA and 7kA weld currents and 2-6bar electrode pressures. The microstructure of the welded materials was evaluated and the hardness profiles were determined. Experimental results showed that increasing electrode pressure and weld current increased the tensile shear load bearing capacity. It was also observed that the expulsion had a negative effect on the tensile shear load bearing capacity.

Resistance Spot Welding in Non-Combustible Magnesium Alloy

2020 ◽  
Author(s):  
Xuanyi Shao ◽  
Yukio Miyashita ◽  
Duriyathep Panwised ◽  
Rattana Borrisutthekul
Keyword(s):  
Magnesium Alloy ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Shear Test ◽  
Dissimilar Materials ◽  
Maximum Load ◽  
Tensile Shear ◽  
Similar Material ◽  
Resistance Spot ◽  
Surface Polishing

Abstract Resistance spot welding (RSW) was applied to non-combustible magnesium alloy, AX41 (Mg-4%Al-1%Ca) to investigate its weldability. The similar material joint of AX41 and dissimilar materials joint between AX41 and aluminum alloy, AA6061 were welded. Tensile shear test was carried out to evaluate joining strength in the similar and dissimilar materials RSW joints. In case of similar material joints, the maximum load obtained with tensile shear test in AX41 similar material joint was higher than that obtained in AA6061 similar material joint. Moreover, higher maximum load was obtained in a similar material joint without surface polishing compared to joint welded with surface polishing in AX41. In case of the dissimilar materials joint, the maximum load obtained was almost comparable with AX41 similar material joint, however scatter in joint strength was large. Weldability of the dissimilar materials joint became poor by applying surface polishing.

Sign in / Sign up

Export Citation Format

Share Document