Journal ArticleDOI
Improvement of resistance spot weldability for dual-phase (DP600) steels using servo gun
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TLDR
Wang et al. as discussed by the authors improved the weldability of dual-phase steel by adjusting the electrode force during spot welding process, and they showed that the width of weld lobe diagram can be nearly doubled.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2009-03-01. It has received 39 citations till now. The article focuses on the topics: Weldability & Spot welding.read more
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Resistance spot welding joints of AISI 316L austenitic stainless steel sheets: Phase transformations, mechanical properties and microstructure characterizations
TL;DR: In this article, the effect of welding current at constant welding time was considered on the weld properties such as weld nugget size, tensile-shear load bearing capacity of welded materials, failure modes, failure energy, ductility, and microstructure of weld nuggets as well.
Journal ArticleDOI
Analysis of stamping performances of dual phase steels: a multi-objective approach to reduce springback and thinning failure
TL;DR: In this article, the design of a U-channel stamping operation was investigated utilizing two different dual phase steel grades: DP 1000 and DP 600, and an explicit/forming-implicit/springback approach was utilized for the numerical simulations.
Journal ArticleDOI
The limit drawing ratio and formability prediction of advanced high strength dual-phase steels
TL;DR: In this article, the authors performed limiting drawing ratio (LDR) experiments to identify the maximum blank diameter of SPFC340, DP600, DP800 and DP1000 with onset crack.
Journal ArticleDOI
Modelling the effect of welding current on resistance spot welding of DP600 steel
TL;DR: In this paper, experiments were made for welding current variation between 6kA and 12kA, and the effect of welding current on micro-properties was very slight while nugget size was highly dependent on welding current.
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Resistance spot welding of dissimilar DP600 and DC54D steels
TL;DR: In this paper, the microstructure in the fusion zone (FZ) was determined to be full lath martensite because of the high cooling rate, and the tensile-shear strength of the welded spot experienced two stages of a notable increase and a subsequent decrease.
References
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Journal ArticleDOI
Characterization of electrical contact conditions in spot welding assemblies
TL;DR: In this article, the interfacial conditions encountered in electrodes and sheets assemblies used in resistance spot welding process are characterized, and the quick wear of the electrodes surfaces is also measured, depending on the type of sheets (coated or none coated).
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Numerical study on the effect of electrode force in small-scale resistance spot welding
Baohua Chang,Y. Zhou +1 more
TL;DR: In this paper, the effects of electrode force on the electrical, thermal and mechanical behavior of the welding process when using direct current have been studied numerically using the finite element method, and the variations of contact radius, current density distribution and temperature profile at the sheet/sheet and electrode/sheet interfaces, the threshold weld times and the maximum diameters of the weld nuggets under three different levels of electrode forces are investigated.
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Weld growth mechanism of resistance spot welds in zinc coated steel
TL;DR: In this article, the role of zinc coating in welding nugget development was investigated for three thickness joints of both uncoated low carbon and hot dip zinc (GI) coated steels.
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Forging force in resistance spot welding
TL;DR: In this paper, the intentional force increase during the process of resistance spot welding (RSW) was studied and it was found that the forging force as a way of influencing weld quality has rarely been studied.
Journal Article
A theoretical study on electrical and thermal response in resistance spot welding
Suck-Joo Na,S.-W. Park +1 more
TL;DR: In this paper, a simple model was suggested and used for calculating the electrical and thermal response of the resistance spot welding process to investigate the influence of contacting forces on the formation of weld nuggets.