Thermodynamic considerations of pore formation and hydrostatic pressure during underwater wet welding

Puchol, Rafael Quintana; Perdomo-González, Lorenzo; Scott, Alejandro Duffus; Bracarense, Alexandre Queiróz; Pessoa, Ezequiel Caires Pereira

doi:10.1080/09507110903568984

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…Therefore, it was feasible for the reaction direction and product of the welding pool to be qualitatively studied. [19][20][21][22][23] . By setting the welding pool as the system, the surrounding atmosphere and base metal were considered the environment.…”

Section: Phase Constitutionmentioning

confidence: 99%

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Zhuang

Jun

et al. 2017

Mater. Trans.

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The effects of the addition of small amounts of Ti on the phase constitution, microstructure, and wear resistance of Fe-B-C hypereutectic overlays produced using powder-wire composite arc welding were investigated. The Fe-B-C hypereutectic overlay phase consisted of TiB 2 and TiC in addition to Fe and Fe 2 B with the addition of Ti. The addition of Ti inhibited growth of the Fe 2 B and Fe 3 (C,B) phases. When the Ti content reached 0.918 mass%, the daisy-like Fe 3 (C,B) phases disappeared, and precipitation of dispersed TiB 2 and TiC began, which improved the wear resistance. Overlays without macroscopic cracks could be obtained. The wear mode of the Fe-B-C hypereutectic overlay changed from a mixture of microcutting and microfracture wear to microcutting wear.

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Section: Phase Constitutionmentioning

confidence: 99%

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Zhuang

Jun

et al. 2017

Mater. Trans.

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Porosity and Microstructure of Underwater Wet FCAW of Duplex Stainless Steel

Shi

Yi³

et al. 2017

Metallogr. Microstruct. Anal.

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Methodology for Measurement of Residual Stress in Welded Joints by the Technique of Pulse-Echo Ultrasound

et al. 2014

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Recently they have discovered a large number of oil wells, however these are found in deeper waters. So it is necessary to develop a repair's methodology and inspection for this type of system to prove its operation. This research was focused to establish a methodology for evaluating residual stress generated from the application of solder in a subsea environment, in order to establish whether there is a relationship between residual stress and the depth of the sea. For this purpose was used underwater electrodes (UW -CS- 1) and an API 5L X65 steel to the development of underwater welds, which was welded at 10 and 15 meters depth by a diver welder on site. The measurement of residual stress is developed using non-destructive techniques, the first one was ultrasound technique (UT) which was the technique proposed by viability to being applied in site and as a second option, was applied X-ray diffraction (XRD), with the objective to validate the results obtained by ultrasound technician. The results showed a similar behavior between both non-destructive techniques. In this study was observed the tendency to increase the level of residual stress with increasing the work depth.

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Thermodynamic considerations of pore formation and hydrostatic pressure during underwater wet welding

Cited by 3 publications

References 2 publications

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Porosity and Microstructure of Underwater Wet FCAW of Duplex Stainless Steel

Methodology for Measurement of Residual Stress in Welded Joints by the Technique of Pulse-Echo Ultrasound

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