The effects of sacrificial coatings on hydrogen embrittlement and re-embrittlement of ultra high strength steels

Figueroa, Daniel Ruíz; Robinson, Michael J.

doi:10.1016/j.corsci.2007.11.023

Cited by 119 publications

(53 citation statements)

References 19 publications

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“…However, there have been inconsistent findings related to their effectiveness [54], mainly due to coating defects. Regardless of the materials used for the coating in use, there is an underlying argument that the coating may not be suitable for the operating conditions required for the component.…”

Section: Hydrogen Embrittlement Mitigation Strategies and Design Of Nmentioning

confidence: 99%

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

et al. 2018

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Hydrogen embrittlement is a complex phenomenon, involving several lengthand timescales, that affects a large class of metals. It can significantly reduce the ductility and load-bearing capacity and cause cracking and catastrophic brittle failures at stresses below the yield stress of susceptible materials. Despite a large research effort in attempting to understand the mechanisms of failure and in developing potential mitigating solutions, hydrogen embrittlement mechanisms are still not completely understood. There are controversial opinions in the literature regarding the underlying mechanisms and related experimental evidence supporting each of these theories. The aim of this paper is to provide a detailed review up to the current state of the art on the effect of hydrogen on the degradation of metals, with a particular focus on steels. Here, we describe the effect of hydrogen in steels from the atomistic to the continuum scale by reporting theoretical evidence supported by quantum calculation and modern experimental characterisation methods, macroscopic effects that influence the mechanical properties of steels and established damaging mechanisms for the embrittlement of steels. Furthermore, we give an insight into current approaches and new mitigation strategies used to design new steels resistant to hydrogen embrittlement.

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Section: Hydrogen Embrittlement Mitigation Strategies and Design Of Nmentioning

confidence: 99%

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

et al. 2018

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“…158) Retained austenite also reduces the overall diffusivity and permeability of hydrogen through the steel. 159,165) Following, 33) if ferrite can be completely surrounded by austenite, then the mobility of hydrogen through the structure should be greatly reduced. Nanostructured bainite forms the ideal test material for this concept given that the amount of retained austenite which is present as thin films is above the percolation threshold.…”

Section: Retained Austenite and Hydrogen Mobilitymentioning

confidence: 99%

Prevention of Hydrogen Embrittlement in Steels

2016

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The essential facts about the nature of the hydrogen embrittlement of steels have now been known for 140 years. It is diffusible hydrogen that is harmful to the toughness of iron. It follows, therefore, that the harmful influence of diffusible hydrogen can be mitigated by preventing its entry into steel or by rendering it immobile once it penetrates the material. This review deals with the methods that might be implemented to design steels and components that resist hydrogen embrittlement by reducing the intake of hydrogen or rendering it innocuous when it does penetrate the steel.

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“…The reason for this phenomenon is that the seawater salinity directly affect conductivity and oxygen of seawater, it will inevitably have an impact on material corrosion. With seawater salinity increasing, the conductivity of seawater increases and the oxygen content reduces, so there will be a maximum corrosion rate at a certain salinity [7][8] . As can be seen from the results of this test, with the increase of salinity, the corrosion rate of DH36 steel in seawater immersion zone first increases and then decreases, that reaches a maximum when the salt content is 3.6%, which results consistent with the previous macroscopic observation.…”

Section: Weight Lossmentioning

confidence: 99%

Effect of Salinity on Corrosion Behavior of DH36 Steel in Seawater Immersion Zone

Cheng¹,

Huang²

2017

dtetr

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ABSTRACT Aimed at the corrosion problem of DH36 steel in the seawater full immersion zone, corrosion environment of full immersion zone has been simulated with artificial seawater in laboratory. The corrosion behaviors of DH36 steel in the full immersion zone were investigated by using full immersion tests. The morphology of corrosion products was observed by SEM. Using regression analysis to establish the relationship between salinity and the corrosion of DH36 steel. The results showed that the corrosion of DH36 steel immersed in full immersion zone corroded seriously, the corrosion rate of DH36 steel firstly increased and then decreased with the increase of water salinity.

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The effects of sacrificial coatings on hydrogen embrittlement and re-embrittlement of ultra high strength steels

Cited by 119 publications

References 19 publications

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

Prevention of Hydrogen Embrittlement in Steels

Effect of Salinity on Corrosion Behavior of DH36 Steel in Seawater Immersion Zone

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