Microstructure and shearing strength of stainless steel/low carbon steel joints produced by resistance spot welding

Wang, Bingxu; Qiu, Feng; Chen, Lei; Zhou, Qunchao; Dong, Bai‐Xin; Yang, Hong-Chang; Yang, Jing; Feng, Zhihai; Tyrer, Na; Barber, Gary C.; Hu, Ming

doi:10.1016/j.jmrt.2022.08.041

Cited by 13 publications

(4 citation statements)

References 32 publications

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“…Naturally, correlations get better and better, the narrower the sheet thickness and material range e.g., Rajarajan et al [33] predicted very accurately the STS, CTS, HV nugget values of RSWed DP800 steel sheets. Good estimations can be made with numerical [34][35][36][37][38] and finite element (FEM) simulations [39][40][41][42][43], machine learning [44], and artificial neural networks [45][46][47][48]. These methods can be a very useful and accurate tools to optimize and predict weld properties (STS and CTS as well), but they are primarily applicable to a specific narrow application area, not to a wide range of material strength classes and combinations.…”

Section: Other Possibilities Of Strength Predictionmentioning

confidence: 99%

See 1 more Smart Citation

Global Approach on the Shear and Cross Tension Strength of Resistance Spot Welded Thin Steel Sheets

Májlinger,

Katula,

Varbai

2023

Period. Polytech. Mech. Eng.

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Several correlations from the professional literature describing the shear and cross tension strength (STS and CTS) of resistance spot welded (RSWed) thin steel sheets were investigated. Some of them need chemical composition or weld nuggets strength hardness as input parameters, making them hardly applicable in the planning stage of the joints. Using STS and CTS data collected from over 250 papers, selected correlations were tested, whether they are applicable to predict the STS and CTS of the RSWed joints at the planning stage to help designers plan their static-loaded welds strength. Most correlations had limitations in the applicable base materials' tensile strength range. Therefore, new equations for STS and CTS are proposed, which can be used to plan in the 300–18900 MPa base metals tensile strength range for similar and dissimilar RSWed joints of thin steel sheets.

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Section: Other Possibilities Of Strength Predictionmentioning

confidence: 99%

“…Fig. 1 Graphical representation of the literature data of the STS values is shown in similar[12-17, 25, 29, 31-35, 38, 39, 45, 49-239] and dissimilar[23,29,31,32,34,38,40,47,50,61,63,67,74,99,102,107,116,118,120,121,134,138,144,162,163,170,205,214,223,231,233, RSWed joints. For the dissimilar joints, the weaker side is depictured according to Eq.…”

mentioning

confidence: 99%

Global Approach on the Shear and Cross Tension Strength of Resistance Spot Welded Thin Steel Sheets

Májlinger,

Katula,

Varbai

2023

Period. Polytech. Mech. Eng.

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“…In the base metal area, a coarse pearlite microstructure was visible, consisting of layers of black cementite and white ferrite, in the HAZ region there was a structural change to a fine pearlite microstructure, and in the weld nugget area, a fine pearlite microstructure was visible. As the welding current increases, the weld nugget area was dominated by the bainite microstructure, this occurs due to the different heat inputs for each variation of the welding parameters [9]. The bainite structure was formed through the heat treatment process of steel which was heated to reach the austenite temperature and cooled at high speed moderate [16].…”

Section: Shear Tensile Testingmentioning

confidence: 99%

“…It takes sufficient heat input to form a good nugget structure so as to produce maximum joint strength. The welding pressure time must be adjusted in order to get the results of the weld joint and good tensile strength [9].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Spot Welding Parameters for Dissimilar Material Mild Steel and Galvanizes Steel on Nugget Size and Mechanical Strength

Hayat,

Al Muslim,

Aminy

2022

EPI-IJE

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The objective of this research was to analyze the effect of spot welding parameters on the size of the weld nugget and the maximum shear strength on dissimilar material mild steel and galvanized steel. The Taguchi and ANOVA methods were used to determine the welding parameters’ contribution to joint quality. Experimental design using Minitab-19 software with Taguchi method of 3 level 3 factor with L27 runs. Specimen size and dimensions were made using ASTM D1002 standard, with a plate thickness of 0.8 mm. Taguchi analysis S/N ratio data mean for weld nugget diameter with three levels of current used, 4 kA, 6 kA, and 8kA, shows the most influential on the diameter of the weld nugget was at 8 kA. The three levels of welding time used, 2s, 4s, and 6s, show the most influential on the diameter of the nugget the weld was at the third level for 6 seconds. It found that there was no significant difference in the size nugget at the three electrode pressure levels of 30 Ppsi, 40 Psi, and 50 Psi. Based on the tensile test and Taguchi analysis, the lowest shear strength was found in a weld nugget size of 3.15 mm at a welding current of 4 kA, a welding time of 2 seconds, an electrode pressure of 30 Psi, with a shear tensile strength of 300.19 N. Along with an increase in the size weld nugget correlated to an increase of shear strength. The highest shear tensile strength was found in the nugget size of 4.16 mm, with a welding current of 8 kA, welding time of 2 seconds, electrode pressure of 50 Psi, with a shear tensile strength of 3383.43 N. From the ANOVA, it found that the three factors of spot welding parameters were used, the most influential parameter in the formation of weld nuggets was welding current with a contribution of 84.86% then followed by welding time with a contribution of 14.86% and electrodes force with a contribution of 0.13%. Then from the three factors of spot welding parameters that were used the most influential parameter on the maximum shear tensile strength was the welding current with a contribution of 95.86 % then followed by welding time with a contribution of 0.52% and electrodes force with a contribution of 0.05%.

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Multi-objective Optimization of Resistance Spot Welding Parameters of BH340 Steel Using Kriging and NSGA-III

Johnson,

Madhavadas,

Asati

et al. 2023

Trans Indian Inst Met

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Microstructure and shearing strength of stainless steel/low carbon steel joints produced by resistance spot welding

Cited by 13 publications

References 32 publications

Global Approach on the Shear and Cross Tension Strength of Resistance Spot Welded Thin Steel Sheets

Global Approach on the Shear and Cross Tension Strength of Resistance Spot Welded Thin Steel Sheets

The Effect of Spot Welding Parameters for Dissimilar Material Mild Steel and Galvanizes Steel on Nugget Size and Mechanical Strength

Multi-objective Optimization of Resistance Spot Welding Parameters of BH340 Steel Using Kriging and NSGA-III

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