Failure analysis of dissimilar thickness resistance spot welded joints in dual-phase steels during tensile shear test

2014 ◽  
Vol 55 ◽  
pp. 366-372 ◽  
Author(s):  
Hongqiang Zhang ◽  
Xiaoming Qiu ◽  
Fei Xing ◽  
Jie Bai ◽  
Jianhe Chen
Keyword(s):  
Failure Analysis ◽  
Welded Joints ◽  
Shear Test ◽  
Dual Phase ◽  
Tensile Shear ◽  
Dual Phase Steels ◽  
Resistance Spot ◽  
Dissimilar Thickness ◽  
Spot Welded

Mechanical property and microstructure of resistance spot welded twinning induced plasticity-dual phase steels joint

2013 ◽  
Vol 18 (6) ◽  
pp. 485-491 ◽  
Author(s):  
V Rajinikanth ◽  
K Mukherjee ◽  
S Ghosh Chowdhury ◽  
A Schiebahn ◽  
A Harms ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Resistance Spot ◽  
Spot Welded

Effect of Initial Gap on Tensile Strength of Resistance Spot Welded Joints

2010 ◽  
Vol 154-155 ◽  
pp. 325-328
Author(s):  
Hai Jun Yang ◽  
Yan Song Zhang ◽  
Jie Shen ◽  
Xin Min Lai
Keyword(s):  
Tensile Strength ◽  
Shear Strength ◽  
Welded Joints ◽  
Fe Model ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Nugget Formation ◽  
Spot Welded

It has been proved that the initial gap has obvious influence on nugget formation, but little works focused on the effect of initial gap on the tensile strength of resistance spot welded (RSW) joints. In this paper, a 3D FE model was built for solving this question. The results show that, even though there are some fluctuations of weld diameter and tensile strength of RSW joints with initial gap, the tensile strength and weld diameter of welded joints with initial gap are still larger than that of welded joints without gap, which confirm that the influence of initial gap on tensile shear strength is little significant. The computation results agree well with experiment.

Resistance spot welding macro characteristics of the dissimilar thickness dual phase steels

2014 ◽  
Vol 63 ◽  
pp. 151-158 ◽  
Author(s):  
Hongqiang Zhang ◽  
Xiaoming Qiu ◽  
Yang Bai ◽  
Fei Xing ◽  
Haiyan Yu ◽  
...  
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Resistance Spot ◽  
Dissimilar Thickness

scholarly journals Effects of Al-Si Coating on Static and Dynamic Strength of Spot-Welded Hot-Stamping Steel Joints

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 976
Author(s):  
Ali Afzal ◽  
Mohsen Hamedi ◽  
Chris Valentin Nielsen
Keyword(s):  
Tensile Strength ◽  
Welded Joints ◽  
Dynamic Force ◽  
Dynamic Tests ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Pull Out ◽  
Static And Dynamic Tests ◽  
Hot Stamped Steel ◽  
Spot Welded

Al-Si is the most popular coating used to prevent oxidation on the surfaces of hot-stamped steel sheets during the heating process. However, like other coatings, it affects the strength of the spot welds in joining the hot-stamped steel parts. In this study, the effects of Al-Si coating on the tensile strength of the resistance spot-welded joints in hot-stamped steel are discussed. Two types of 1.8 mm hot-stamped steel, in uncoated and Al-Si coated forms, were resistance spot-welded, and the tensile shear behavior of the welded joints was studied in both static and dynamic tests. To do this, a special fixture for impact tensile shear tests was designed and fabricated. In the case of the Al-Si coated steel, the presence of the molten Al-Si over the fusion zone, especially its aggregation in the edge of the weld nugget, caused a decrease in the maximum tensile load capacity and a failure of energy absorption in static and dynamic tests, respectively. Additionally, it increased the probability of changing its failure mode from pull out to interfacial fracture in the dynamic test. This study shows that the tensile strength behavior of the welded joints for the Al-Si coated hot-stamped steel is lower than the uncoated steel during static, and especially dynamic, force.

Effect of Welding Cycle on the Fatigue Behaviour of Resistance Spot Welded Dual Phase Steels

2008 ◽  
Vol 52 (11-12) ◽  
pp. 30-41 ◽  
Author(s):  
F. Rossillon ◽  
A. Galtier ◽  
J. L. Robert ◽  
M. Duchet ◽  
A. Lens ◽  
...  
Keyword(s):  
Fatigue Behaviour ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Resistance Spot ◽  
Welding Cycle ◽  
Spot Welded
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