Peak load and energy absorption of DP600 advanced steel resistance spot welds

Jaber, Hassanen; Pouranvari, M.; Salim, Raid K.; Hashim, Fadhil A.; Marashi, S. P. H.

doi:10.1080/03019233.2016.1229880

Cited by 29 publications

(15 citation statements)

References 20 publications

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“…Microhardness and microstructural characteristics of the resistance spot weld joint are the key factors affecting their failure mechanism . Therefore, hardness variation across the joint is explained based on the microstructure development.…”

Section: Resultsmentioning

confidence: 99%

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Effect of multi pulse current treatment on microstructure and microhardness of resistance spot welded dual phase steel DP590

Soomro

Pedapati

2020

Materialwissenschaft Werkst

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In this paper, microhardness and microstructural characteristics of dual phase DP590 steel resistance spot weld joint under two different welding conditions (i. e. single pulse and multi pulse) were studied. It was observed that applying multi pulse currents resulted in quasi-equiaxed grains of tempered martensite in fusion zone (FZ) of the weldment. The refinement of microstructure in fusion zone using multi pulse current treatment resulted in reduced hardness of the weld joint.Keywords: Resistance spot welding / multi pulse current / microhardness / microstructure / dual phase steelEffect of multi pulse current treatment on spot welded DP590 steel Materialwiss. Werkstofftech. 2020, 51, 699-705

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Section: Resultsmentioning

confidence: 99%

“…It has been reported that hardenability of the intercritical austenite is higher compared to initial hardenability of the steel due to carbon partitioning during intercritical annealing. Austenite can transform into ferrite, pearlite, martensite, and bainite depending on the cooling rate and hardenability of steel .…”

Section: Resultsmentioning

confidence: 99%

Effect of multi pulse current treatment on microstructure and microhardness of resistance spot welded dual phase steel DP590

Soomro

Pedapati

2020

Materialwissenschaft Werkst

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“…Three samples are prepared for each run and out of these, two are used for the tensile shear test and one for metallurgical examination. Spot welded joint has more tendency to fail in the IF mode for the tensile shear test compared to other tests such as peel test and cross tension test [6,32]. Furthermore, it is observed that if spot weld joint fails in the pull-out failure (PF) mode during the tensile shear test, then it will also show failure behaviour with the PF mode during the peel test as well as the cross tension test [7]; therefore, the tensile shear test is carried out to investigate the mechanical performance of spot welded joint.…”

Section: Methodsmentioning

confidence: 99%

Influence of electrode tip diameter on metallurgical and mechanical aspects of spot welded duplex stainless steel

Калыанкар

Chudasama

2020

High Temperature Materials and Processes

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In this article, the influence of electrode tip diameter is investigated for spot welded duplex stainless steel (DSS). Electrode tip diameter and welding current are considered as the major influencing parameters and their values are varied within the feasible range, suitable for 0.8 mm thick sheet, whereas other important parameters such as welding time and electrode force are kept constant. DSS with the chosen thickness range is now becoming a useful material in automotive body-in-white applications and in future it will become one of the key materials replacing the existing materials and hence research outcome of the present work may be beneficial from application view point. In this work, the spot welding quality is inspected through metallurgical aspects (microstructure and microhardness), physical aspects (nugget diameter and electrode indentation), mechanical performance (tensile shear strength [TSS]) and failure mode. The obtained result shows that smaller electrode tip diameter limits nugget diameter due to expulsion phenomena and increases electrode indentation due to higher current intensity. TSS decreases with increase in electrode tip diameter for the same welding current but maximum TSS obtained for particular electrode tip diameter increases with increase in electrode tip diameter up to a specific limit and then it remains constant.

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“…Jaber et al have found that the greater electrical current used than optimal might displace the location of the pressing force in 221 welding. There is presented a dependency of the electrical current and the displacement effect but it is limited for a specified work case given in the paper [6].…”

Section: Introductionmentioning

confidence: 99%

Effective temperature based algorithm for achieving constant quality resistance seam weld

2021

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The resistance seam welding is a welding technique that is often used for the creation of the leak-tight welds. It is a technique where the weld is created as a set of overlapping weld nuggets between the cylindrical welding electrodes. The creation of the weld nuggets is depending on many external and internal parameters. Some of the external parameters are pressing force, welding electrodes, electrical current and time, while the internal parameters are electrical resistance, resistivity, and temperature. The main issue with the resistance seam welding is to properly set up internal and external parameters, create a weld nugget of a certain quality, reconfigure the parameters, relocate, and create another weld nugget of the same quality. The modern welding machines must have monitoring systems capable to make decisions and recalibration of the parameters. These systems are very complex and expensive, and as such, non-affordable for many small enterprises. This paper is presenting an effective, temperature-based algorithm for selecting the optimal welding parameters before the welding begins. The algorithm bases on the data from the experimental welding and numeric simulation of the welding process. The verification of the algorithm is done after testing the quality of the welds.

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Peak load and energy absorption of DP600 advanced steel resistance spot welds

Cited by 29 publications

References 20 publications

Effect of multi pulse current treatment on microstructure and microhardness of resistance spot welded dual phase steel DP590

Effect of multi pulse current treatment on microstructure and microhardness of resistance spot welded dual phase steel DP590

Influence of electrode tip diameter on metallurgical and mechanical aspects of spot welded duplex stainless steel

Effective temperature based algorithm for achieving constant quality resistance seam weld

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