Influencia del acabado superficial en la permeación de hidrógeno del acero API 5L-X52

Réquiz, Roberto; Vera, Natalia; Camero, Sonia

doi:10.3989/revmetalm.2004.v40.i1.240

Cited by 6 publications

(5 citation statements)

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“…Atxaga et al (2009) have studied hydrogen input during the operation of acid pickling in washers that presented rupture. In accordance with that expressed by Réquiz et al (2004), they associate to an API 5L-X52 steel, an increased in the surface roughness due to the pickling of steel, with a less diffusion of hydrogen into the metal. Moreover, the same authors, Réquiz et al (2008), reported that in coated samples, by electrogalvanized and by immersion, the coating layer acts as a barrier for hydrogen damage.…”

Section: Introductionsupporting

confidence: 70%

“…According to metallographic observation, samples that were pickled at 38°C have a rougher surface than were those pickled at room temperature. Besides, Réquiz et al (2004) for a steel API 5L-X52, showed that samples with less rough surfaces promote H absorption, although there is less atomic H adsorbed on the metal surface. Thus they attributed the extent of roughness achieved in the pickling step to evaluate the influence on the coating quality, because if the roughness is increased, the grip of the base metal coating is greater and the probability of entry of hydrogen is lower.…”

Section: Resultsmentioning

confidence: 96%

“…Average thickness (µm) As also was described by Réquiz et al (2004), the higher roughness is greater grip of the coating to the base metal and the lower the probability of entry of hydrogen. Then it can be stayed that, under these conditions, Sample 1 (less rough) will present greater susceptibility to hydrogen damage as it offers a smaller surface for the process of H recombination, as previously was studied by Pérez Escobar et al (2014).…”

Section: Roughness (µM)mentioning

confidence: 91%

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Relationship between the Electrogalvanized Stages and the Income of Hydrogen in a Low Carbon Wire Steel

Delpupo

Inés

Candia

et al. 2015

Procedia Materials Science

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Hydrogenation of steel products in the electrochemical processes occurs to some extent in all stages of coating. The decisive contribution in the hydrogenation of steel is galvanized by itself, however, the influence of preliminary operations like degreasing and pickling also are considered as sources of hydrogen embrittlement. In the literature, numerous previous studies are aimed on the effect of deformation on the corrosion behavior of zinc coating, however limited to the specific treatment of corrosion properties leaving aside the possible hydrogen trapping. Embrittlement can occur when hydrogen is released during etching process, absorbed by the steel and being trapped at the grain boundaries, dislocations, interfaces inclusion / matrix, etc. Normally, at galvanizing temperatures, hydrogen is expelled from steel. But, in some cases as in electrogalvanizing, hydrogen is absorbed in the steel. This paper aims to assess the main variables in the pickling and electrogalvanizing in order to optimize the coating procedure which avoids the possible hydrogen entry into the steel. Besides, some thermal properties of the coatings obtained are discussed.

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Section: Introductionsupporting

confidence: 70%

Section: Resultsmentioning

confidence: 96%

Section: Roughness (µM)mentioning

confidence: 91%

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Relationship between the Electrogalvanized Stages and the Income of Hydrogen in a Low Carbon Wire Steel

Delpupo

Inés

Candia

et al. 2015

Procedia Materials Science

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“…On the other hand, the surface finish has a significant influence on the diffusion process. Depending on the topographical characteristics of the surface, atomic hydrogen could be favored [8,9].…”

Section: /31mentioning

confidence: 99%

Analysis of 3D Planar Laminations in a Welded Section of API 5L X52 Applying the Finite Element Method

et al. 2018

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Abstract:The mechanical behavior of API 5L X52 steel with planar type laminations was studied in the present work. Planar laminations were proposed in the base metal (BM), heat affected zone (HAZ) and welding bead (WB). Three-dimensional finite element (FE) models, kinematic hardening and mechanical properties for BM, HAZ, and WB were activated in the finite element program. The results showed that crack propagation corresponds to the direction of the main stress. For a crack length (2a) of 10.01 mm, crack propagation may occur at the right crack tip towards the outer wall of the BM. For 2a of 15.12 mm, crack propagation was located on the right crack tip and propagates to the inner wall. For 2a of 17.12 mm, crack propagation was observed at the left crack tip and propagates to the outer wall in the BM. The results achieved by FEM agree when compared with real laminations in API 5L pipelines.

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“…I IN NT TR RO OD DU UC CC CI IÓ ÓN NDesde hace ya algunas décadas, está probada y asumida la influencia de algunos factores como la composición química, la microestructura, el historial térmi-co y mecánico [1] y la resistencia a tracción del material en el daño inducido por el hidrógeno. Sin embargo y a pesar de la importancia de estas variables, su estudio y evaluación no ha sido el objetivo principal de la mayor parte de la extensa bibliografía publicada acerca del hidrógeno y su influencia en el comportamiento de los materiales.…”

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Analysis of the hydrogen absorption and its influence on mechanical behaviour of five iron alloys

Albístur-Goñi¹,

Fernández-Carrasquilla²

2008

Rev. metal.

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1 1. . I IN NT TR RO OD DU UC CC CI IÓ ÓN NDesde hace ya algunas décadas, está probada y asumida la influencia de algunos factores como la composición química, la microestructura, el historial térmi-co y mecánico [1] y la resistencia a tracción del material en el daño inducido por el hidrógeno. Sin embargo y a pesar de la importancia de estas variables, su estudio y evaluación no ha sido el objetivo principal de la mayor parte de la extensa bibliografía publicada acerca del hidrógeno y su influencia en el comportamiento de los materiales. Entre los autores interesados en estos factores está A.W. Thompson [2][3][4][5][6][7][8] , quien se centra especialmente en el estudio de aceros con un contenido en carbono entre 0,26 % y 0,86 %, mediante ensayos de tracción y doblado, para hacer un análisis exhaustivo de la influencia del hidrógeno en los micromecanismos de fractura. En este caso, la variable A An ná ál li is si is s d de e l la a a ab bs so or rc ci ió ón n d de e h hi id dr ró óg ge en no o y y d de e s su u i in nf fl lu ue en nc ci ia a e en n e el l c co om mp po or rt ta am mi ie en nt to o m me ec cá án ni ic co o d de e c ci in nc co o a al le ea ac ci io on ne es s f fé ér rr re ea as s (A. Albístur-Goñi* y J. Fernández-Carrasquilla* R Re es su um me en n El objetivo de este trabajo es el estudio de la influencia del hidrógeno en el comportamiento mecánico de cinco aleaciones férreas con distinto contenido, estado y morfología de carbono (grafito libre; esferoidal y laminar y combinado como CFe 3 ). Los resultados experimentales extraídos de los ensayos de tracción llevados a cabo a diferentes velocidades de desplazamiento entre mordazas, flexión por choque sobre probeta Charpy, tenacidad de fractura y del aná-lisis fractográfico indican que el hidrógeno interno o disuelto, además de producir una importante pérdida de ductilidad, provoca un endurecimiento en los aceros y un ablandamiento en las fundiciones. Estos resultados también proporcionan una evidencia del importante papel que juega la velocidad de deformación en el mecanismo de daño inducido por hidrógeno. Asimismo, se ha utilizado espectroscopía óptica de descarga luminiscente (EODL) para evaluar la concentración de hidrógeno absorbido por las muestras en función del tiempo y de la profundidad. Se puede deducir del innovador uso de esta técnica no sólo que la difusividad del hidrógeno en las fundiciones dúctiles es mayor que en los aceros o que en la fundición gris, sino también que el hidrógeno interacciona con distintos lugares de atrapamiento. P Pa al la ab br ra as s c cl la av ve e Carga catódica. Hidrógeno. Propiedad mecánica. Espectroscopia óptica de descarga luminiscente. Aceros. Fundiciones.A An na al ly ys si is s o of f t th he e h hy yd dr ro o g ge en n a ab bs so or rp pt ti io on n a an nd d i it ts s i in nf fl lu ue en nc ce e o on n m me ec ch ha an ni ic ca al l b be eh ha av vi io ou ur r o of f f fi iv ve e i ir ro on n a al ll lo oy ys s A Ab bs st tr ra ac ct t A study of the influence of hydrogen on the mechanical behav...

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Influencia del acabado superficial en la permeación de hidrógeno del acero API 5L-X52

Cited by 6 publications

References 0 publications

Relationship between the Electrogalvanized Stages and the Income of Hydrogen in a Low Carbon Wire Steel

Relationship between the Electrogalvanized Stages and the Income of Hydrogen in a Low Carbon Wire Steel

Analysis of 3D Planar Laminations in a Welded Section of API 5L X52 Applying the Finite Element Method

Analysis of the hydrogen absorption and its influence on mechanical behaviour of five iron alloys

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