Hydrogen embrittlement in power plant steels

Dayal, R. K.; Parvathavarthini, N.

doi:10.1007/bf02706442

Cited by 78 publications

(26 citation statements)

References 24 publications

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“…This is due to a very specific and complex relationship between the hydrodynamic processes in an evaporator and the boiler water treatment regimes, as well as the design and operating characteristics of a particular boiler unit [1][2][3]. In practice, it is observed that different types of damages to industrial components of fossil fuel power plant have been associated with the presence and localization of hydrogen in metals [2][3][4][5]. Due to the complexity of the processes (or 20G, equivalent to AISI 1020) and were exposed to the operating parameters, pressure: P=15,5MPa and temperature: t=350°C.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen damage of steels: A case study and hydrogen embrittlement model

Djukic

Zeravcic

Bakić

et al. 2015

Engineering Failure Analysis

266

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Section: Introductionmentioning

confidence: 99%

Hydrogen damage of steels: A case study and hydrogen embrittlement model

Djukic

Zeravcic

Bakić

et al. 2015

Engineering Failure Analysis

266

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“…hydrogen embrittlement may be an issue in power generation plants [28,29] during their cooling below 150…”

Section: Introductionmentioning

confidence: 99%

Hydrogen pre-charging effects on the notch tensile properties and fracture behaviour of heat-affected zones of thermally aged welds between T24 and T92 creep-resistant steels

Falat¹,

Čiripová²,

Homolová³

et al. 2016

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The effects of thermal exposure at 600• C and subsequent electrolytic hydrogen charging at ambient temperature were studied in terms of their influence on notch-tensile properties and fracture behaviour of individual heat-affected zones (HAZ) of Ni-based transition weldments between T24 and T92 creep-resistant steels. The experimental welded joints were prepared by gas tungsten arc welding using "Inconel-type" filler metal Nirod 600. Post-weld heat treatment (PWHT) was carried out at 720• C for 2 h, followed by passive cooling within tempering furnace. Subsequent long-term ageing of two series of prepared T24/T92 dissimilar welds at 600• C for 1000 and 5000 h, respectively, led to gradual changes in both T24 and T92 HAZ microstructures, which were mainly related to their additional tempering accompanied by the coarsening of original precipitates as well as newly-formed secondary phases. The observed thermally-induced microstructural changes together with subsequently applied hydrogen charging effects resulted in complex variations in tensile properties and fracture behaviour of individual HAZ regions related to the pre-existing differences in their initial tempering grade due to the used PWHT procedure. K e y w o r d s : creep-resistant steels, dissimilar welding, isothermal ageing, hydrogen embrittlement, mechanical properties, fracture mechanisms

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“…Figure 10: Proposed reaction pathway for decomposition of hydrocarbon oil within tribocontacts [16,21] It should also be noted that some of the generated hydrogen diffuses into the rubbing counterpart. However, hydrogen atoms are prone to diffuse towards tensile stress fields [34,35]. Therefore, more hydrogen diffuses into the membrane when its surface is loaded and hydrogen transportation into the subsurface material is enhanced under compressive stresses [32].…”

Section: The Source Of Hydrogen In a Lubricated Tribocontactmentioning

confidence: 99%

Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact

Esfahani

Morina

Han³

et al. 2017

Tribology International

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Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact, Tribiology International, http://dx.doi.org/10. 1016/j.triboint.2017.01.019 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Hydrogen embrittlement in power plant steels

Cited by 78 publications

References 24 publications

Hydrogen damage of steels: A case study and hydrogen embrittlement model

Hydrogen damage of steels: A case study and hydrogen embrittlement model

Hydrogen pre-charging effects on the notch tensile properties and fracture behaviour of heat-affected zones of thermally aged welds between T24 and T92 creep-resistant steels

Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact

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