Sulfide Stress Cracking Susceptibility of Welded X-60 and X-65 Pipeline Steels

Natividad, C.; Salazar, Μ.; Contreras, A.; Albiter, A.; Pérez, R.

doi:10.5006/1.3278275

Cited by 12 publications

(12 citation statements)

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“…As a result, there is an increasing incidence of different types of corrosion in these regions 15,[19][20][21][22][23][24] . In the present work, weight loss tests, scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) were applied to measure the effects of different H 2 S concentrations and pH (3 and 5) on the corrosion process and corrosion product films that were formed on API 5L X80 steel (base metal (BM) and its welded joint (WJ)).…”

Section: Introductionmentioning

confidence: 99%

Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution

2015

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Section: Introductionmentioning

confidence: 99%

Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution

2015

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“…En este sentido, las tensiones inducidas en el proceso de soldadura juegan un papel determinante en el surgimiento de fenómenos de corrosión localizada y fragilización inducida por el hidrógeno [1] .…”

Section: I In Nt Tr Ro Od Du Uc Cc Ci Ió óN Nunclassified

“…Fueron evaluadas todas las partes de la unión soldada, antes y después del ensayo realizado en el ambiente corrosivo y, de esta forma, fue posible constatar el incremento del nivel de hidrógeno residual, aspecto que era esperado y atribuido a la difusión de este elemento hacia el interior de la junta [1] .…”

Section: R Re Es Su Ul Lt Ta Ad Do Os S Y Y a An Ná áL LI Is Si unclassified

Susceptibilidad a grietas inducidas por hidrógeno en ambiente corrosivo de H<sub>2</sub>S de juntas soldadas de acero API 5L-X80

2009

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S Su us sc ce ep pt ti ib bi il li id da ad d a a g gr ri ie et ta as s i in nd du uc ci id da as s p po or r h hi id dr ró óg ge en no o e en n a am mb bi ie en nt te e c co or rr ro os si iv vo o d de e H H 2 2 S S d de e j ju un nt ta as s s so ol ld da ad da as s d de e a ac ce er ro o A AP PI I 5 5L L--X X8 80 0 ( (• •) ) J. Hilton*, H.C. Fals** y R.E. Trevisan* R Re es su um me en n En este trabajo fue realizado un estudio sobre la susceptibilidad al agrietamiento inducido por el hidrógeno de uniones soldadas de aceros API -X80, expuestas a un ambiente saturado en ácido sulfhídrico (H 2 S). Fue empleado el ensayo G-BOP modificado. El proceso de alambre tubular, con dos metales de aporte, E71-T1 y E71-T8K6, fue usado, manteniendo constante los parámetros del proceso de soldadura. Las probetas fueron soldadas a temperatura ambiente y también tras precalentamiento a 100 o C. Los bloques soldados del ensayo G-BOP modificado fueron expuestos a un ambiente saturado en H 2 S, según recomienda la norma NACE TM0284. Los cordones de soldadura fueron caracterizados microestructuralmente y realizados análisis de hidrógeno residual en las probetas. Se observaron y calcularon las áreas de las superficies de fractura de las grietas inducidas por el hidrógeno y se analizaron los modos de fractura ocurridos. Se constató que el precalentamiento a 100 o C fue suficiente para evitar el agrietamiento. También fue encontrado que el alambre tubular E71-T8K6 fue más susceptible a este tipo de agrietamiento, y el modo mixto de fractura, típico de este fenómeno, fue predominante. P Pa al la ab br ra as s c cl la av ve eSoldadura; Grietas inducidas por hidrógeno; H 2 S; Alambre tubular; Ensayo G-BOP.S Su us sc ce ep pt ti ib bi il li it ty y t to o h hy yd dr ro og ge en n--i in nd du uc ce ed d c cr ra ac ck ki in ng g i in n H H 2 2 S S c co or rr ro os si io on n e en nv vi ir ro on nm me en nt t o of f A AP PI I 5 5L L--X X8 80 0 w we el ld d m me et ta al l A Ab bs st tr ra ac ct tThe susceptibility to hydrogen-induced cracking in H 2 S environment of welded API X80 steel was studied. The flux cored arc welding (FCAW) process was employed with E71-T1 and E71-T8K6 wires. The welding parameters were kept constant, but the samples were welded using different preheat temperatures (room temperature and 100ºC). The gapped bead-on-plate (G-BOP) test was used. The specimens of modified G-BOP tests were exposed to an environment saturated in H 2 S, as recommended by the NACE TM0284 standard. The weld beads were characterized by optical microscopy and the level of residual hydrogen in the samples was measured. The fracture surface areas of hydrogen-induced cracking were calculated and the fracture mode was discussed. It was found that the preheating temperature of 100 o C was enough to avoid cracking, even in the presence of H 2 S. It was also found that the E71-T8K6 wire was more susceptible to cracking, and the typical mixed-mode fracture was predominant in all samples K Ke ey yw wo or rd ds s Welding; Hydrogen induced cracking; H 2 S;...

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“…It has been shown that substances present in crude oil, such as water, carbon dioxide (CO 2 ) and hydrogen sulphide (H 2 S), can cause frequent failures in the zones of welded joints of oil pipelines and gas pipelines. On this subject, the stresses induced during the welding process play a determining role in the occurrence of localized corrosion phenomena and fragilization induced by hydrogen 1 .…”

Section: Introductionmentioning

confidence: 99%

Susceptibility to hydrogen-induced cracking in H₂S corrosion environment of API 5L-X80 welding metal

Hilton

Fals

Trevisan

2011

Welding International

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The susceptibility to hydrogen-induced cracking in hydrogen sulphide (H 2 S) environment of welded API X80 steel was studied. The flux-cored arc welding process was employed with E71-T1 and E71-T8K6 wires. The welding parameters were kept constant, but the samples were welded using different preheat temperatures (room temperature and 1008C). The gapped bead-on-plate (G-BOP) test was used. The specimens of modified G-BOP tests were exposed to an environment saturated with H 2 S, as recommended by the NACE TM0284 standard. The weld beads were characterized by optical microscopy and the level of residual hydrogen in the samples was measured. The fracture surface areas of hydrogen-induced cracking were calculated and the fracture mode was discussed. It was found that the preheating temperature of 1008C was enough to avoid cracking, even in the presence of H 2 S. It was also found that the E71-T8K6 wire was more susceptible to cracking, and the typical mixed-mode fracture was predominant in all samples.

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Sulfide Stress Cracking Susceptibility of Welded X-60 and X-65 Pipeline Steels

Cited by 12 publications

References 0 publications

Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution

Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution

Susceptibilidad a grietas inducidas por hidrógeno en ambiente corrosivo de H<sub>2</sub>S de juntas soldadas de acero API 5L-X80

Susceptibility to hydrogen-induced cracking in H₂S corrosion environment of API 5L-X80 welding metal

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Sulfide Stress Cracking Susceptibility of Welded X-60 and X-65 Pipeline Steels

Cited by 12 publications

References 0 publications

Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution

Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution

Susceptibilidad a grietas inducidas por hidrógeno en ambiente corrosivo de H<sub>2</sub>S de juntas soldadas de acero API 5L-X80

Susceptibility to hydrogen-induced cracking in H2S corrosion environment of API 5L-X80 welding metal

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Susceptibility to hydrogen-induced cracking in H₂S corrosion environment of API 5L-X80 welding metal