Effects of single and double pulses on microstructure and mechanical properties of weld joints during high-power double-wire GMAW

Wu, Kaiyuan; Ding, Nian; Yin, Tao; Min, Zeng; Liang, Zhuoyong

doi:10.1016/j.jmapro.2018.08.025

Cited by 41 publications

(34 citation statements)

References 23 publications

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“…The residual salt on the substrate was removed by cleaning with distilled water. Scanning Electron Microscope (SEM) with Energy dispersive spectroscopy (EDS) attachment (Make: ZEISS EVO 18) was used to identify the chemical compositions and surface morphology [28][29][30][31]. The x-ray Diffraction (XRD) analysis (BRUKER D8 Advance) provided the substrate phases due to oxidation and reduction reaction.…”

Section: Metallography Analysismentioning

confidence: 99%

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na₂SO₄, V₂O₅, and NaCl salt mixture at 900 °C

Munusamy

Manoharan

Arivazhagan

et al. 2022

Mater. Res. Express

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The high-temperature corrosion behavior of constant current gas tungsten arc (GTA) and pulsed current gas tungsten arc (PCGTA) welded Hastelloy X with different filler wires (C263 and ERNiCr-3) are studied for 50 cycles at 900 °C. Molten salt I (MS I) (75 % Na2SO4 + 25 % V2O5) and molten salt II (MS II) (75 % Na2SO4 + 20 % V2O5 + 5 % NaCl) were coated on the welded specimens. MS II coated substrate shows the highest weight gain than MS I with a parabolic constant for GTA ERNiCr-3 as 21.440 x 10-6 mg2/(cm4.s). Whereas PCGTA C263 welded sample with MS I, revealed parabolic constant (lowest) of 0.008 x 10-6 mg2/ (cm4.s). Based on the results, an increasing pattern of hot corrosion resistance of substrates is arranged as GTA ERNiCr-3 < GTA C263 < PCGTA C263 < PCGTA ERNiCr-3. PCGTA shows more refined grains, higher grain boundary volume, better corrosion resistance, and more protective phases like Cr2O3, NiO, NiCr2O4, CoCr2O4, Al2O3, NiFe2O4, NbO than GTA weldment. But phases such as Fe2O3, MoO3, and Cr2S3 (non-protective phases) decrease corrosion resistance due to acid fluxing of alloying elements that promote the oxide scale exfoliation, spallation, chipping, and cracking. This study observed that PCGTA with C263 filler in MS I and MS II environment provides good corrosion resistance at high temperatures.

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Section: Metallography Analysismentioning

confidence: 99%

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na₂SO₄, V₂O₅, and NaCl salt mixture at 900 °C

Munusamy

Manoharan

Arivazhagan

et al. 2022

Mater. Res. Express

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“…Finally, it was discovered that the double arc in the synchronous phase can maintain the stiffness, and produce less magnetic arc blow, fewer spatters, a finer fishscale ripple appearance and superior weld bead uniformity. Moreover, they conducted some comparative experiments between single pulsed and double pulsed double-wire tandem GMAW processes, respectively using low carbon steel [41] and aluminum alloy [42] as the base metals. Under these two modes, the relative experiments can obtain high quality weld beads with slight spatter, without humps and undercut.…”

Section: Improvement Of Process Control Of the Double-wire Gmaw Processmentioning

confidence: 99%

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Zhou

Yao

2019

IEEE Access

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Recently, double-wire gas metal arc welding (GMAW) process is more and more prevalently employed in industrial applications and attracted many academic researches. This paper reviewed the recent trends of researches and applications of this process. Three main aspects were included in this paper. The first was the operational process analysis of the process, and the reviewing work was divided into two catalogues: twin-wire GMAW process and tandem GMAW process, which were two main energy delivery and control formations of the process. This part focused on some negative phenomena, such as arc interruption, during the welding process and their effects on the products quality and process stability. Some works about using different current waveforms combinations and their effects on the welding process were discussed. Also, the works of numerical simulation for this process were mentioned in this part. The second part was about process stability monitoring, and corresponding works focused on establishing quantitative process stability estimation model. The last was the improvement of process control method, and the works mainly focused on the adjustment and modulation of the current waveforms, in order to eliminate negative phenomena, improve the process stability and obtain the products with high quality. Finally, some suggestions about future works were presented. This paper can provide references and enlightens for current academic researches or actual industrial applications in the double-wire GMAW process relative areas.INDEX TERMS Double-wire GMAW process, arc interruption, process stability, current waveform.

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“…Commonly known pulse parameters are the amplitude and the duration of the pulse and pause. These parameters further complicate the design process [16][17][18]. Nevertheless, applying special project methods such as the Taguchi algorithm can solve this task [19,20].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the pulsed arc welding parameters for wire arc additive manufacturing in austenitic steel applications

Zavdoveev

Pozniakov

Baudin

et al. 2022

Int J Adv Manuf Technol

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Industrial development continues to present challenges for manufacturers. One of them is additive manufacturing (AM) with metallic materials. One promising solution is wire arc additive manufacturing (WAAM). Currently, WAAM is a more promising tool for developers, firstly due to the simplicity of its realization and secondly for its cost-effectiveness. Building materials are represented by welding wires, so the deposition rate is favorable. A pulse power source is commonly used in this scheme of realization. Much less attention has been paid to the optimization of the power source working regime, i.e., welding mode. Indeed, the power determines the whole process of WAAM. Therefore, in the present work, an attempt has been made to perform a scientifically based design for the optimal welding mode. The austenitic welding wire was chosen to eliminate phase-transition effects in the solid state of the deposited metal. As a result of the investigation, the advantages of the designed welding mode for WAAM application are made clear. Successful efforts have been made to optimize welding modes for WAAM applications. This study is important for manufacturers as well as engineers and scientists.

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Effects of single and double pulses on microstructure and mechanical properties of weld joints during high-power double-wire GMAW

Cited by 41 publications

References 23 publications

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na₂SO₄, V₂O₅, and NaCl salt mixture at 900 °C

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na₂SO₄, V₂O₅, and NaCl salt mixture at 900 °C

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Optimization of the pulsed arc welding parameters for wire arc additive manufacturing in austenitic steel applications

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Effects of single and double pulses on microstructure and mechanical properties of weld joints during high-power double-wire GMAW

Cited by 41 publications

References 23 publications

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na2SO4, V2O5, and NaCl salt mixture at 900 °C

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na2SO4, V2O5, and NaCl salt mixture at 900 °C

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Optimization of the pulsed arc welding parameters for wire arc additive manufacturing in austenitic steel applications

Contact Info

Product

Resources

About

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na₂SO₄, V₂O₅, and NaCl salt mixture at 900 °C

Hot corrosion behaviour of constant and pulsed current welded Hastelloy X in Na₂SO₄, V₂O₅, and NaCl salt mixture at 900 °C