Hydrogen embrittlement of microalloyed rail steels

Moon, A. P.; Balasubramaniam, R.; Panda, Biswabandan

doi:10.1016/j.msea.2010.02.013

Cited by 25 publications

(18 citation statements)

References 8 publications

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“…The reduction of area is sensitive to hydrogen, and is often used to evaluate the sensitivity of hydrogen embrittlement, as is calculated from: 14) . …”

Section: Effects Of Al Content On the Hydrogen Embrittlement Charactementioning

confidence: 99%

“…Embrittlement of the Mn-Al Bainitic Steels Chemical composition, microstructural features and strength of the material, as well as environmental conditions, have effects on hydrogen embrittlement characteristics, 10,14) but the effect of microstructure is the most important. 13) Therefore, the microstructures of the investigated steels shown in Fig.…”

Section: Effects Of Microstructure On the Hydrogenmentioning

confidence: 99%

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Hydrogen Embrittlement of a Manganese–aluminum High-strength Bainitic Steel for Railway Crossings

Chen

et al. 2011

ISIJ Int.

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The hydrogen embrittlement characteristics of a Mn-Al bainitic steel for railway crossings were studied by means of the slow strain rate test (SSRT), the delayed fracture test and X-ray diffraction (XRD) analysis. The binding energies and hydrogen diffusion barriers of an iron unit cell were tested separately with Al, Si and H, and were evaluated by the first principle calculation. The results showed that the hydrogen embrittlement decreased greatly with increased Al content. Microstructure examinations indicated that the content of retained austenite increased with increased Al content, which was as irreversible hydrogen traps and was not sensitive to hydrogen embrittlement. It is found that the characteristics of hydrogen embrittlement identified by SSRT and the delayed fracture test were different. From the first principle calculation, the binding energy of the iron lattice containing aluminum decreased less as compared to those of the cell containing silicon, but the diffusion barriers increased significantly.

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“…The reduction of area is sensitive to hydrogen, and is often used to evaluate the sensitivity of hydrogen embrittlement, as is calculated from: 14) . …”

Section: Effects Of Al Content On the Hydrogen Embrittlement Charactementioning

confidence: 99%

Section: Effects Of Microstructure On the Hydrogenmentioning

confidence: 99%

Hydrogen Embrittlement of a Manganese–aluminum High-strength Bainitic Steel for Railway Crossings

Chen

et al. 2011

ISIJ Int.

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“…In another study, V. Rault et al [8]investigated corrosion behavior of heavily deformed pearlitic and brass-coated. It was observed that plastic deformation had asmall influence on cathodic reactions (oxygenreduction reaction) while plastic deformationhad asignificant influence on anodic dissolution for both the pearlitic steel and the brass-coated steel.In one study about hydrogen embrittlement [9]. The results showed that the degree of embrittlement was higher in C-Mn rail steel compared to microalloyed rail steels.In another study belonging to A.P.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Corrosion Behaviors of Pearlitic Rails Generally Used in Railway Tracks

Turan¹

2017

ETJ

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This study aims to compare corrosion behaviors of four different quality rails which are generally preferred in railways. Potentiodynamic corrosion test and immersion test were performed for R260, R260Mn, R260 Grooved and R350HT quality rails. Microstructures of specimens were characterized by Scanning Electron Microscope (SEM) before and after corrosion tests. With this study, effects of chemical composition, rail geometry and heat treatment on corrosion performances of rails were investigated. Results show that R260Mn quality rail exhibits best corrosion performance among the rails. The Same trend could be observed by immersion test.

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“…The level of mechanical properties degradation is the basic criterion for material destruction. Slow Strain Rate Test (SSRT) with obtained narrowing changes as its result is particularly informative, or, to a slightly lesser degree, the length changes [1,2]. Structural criteria are also used in assessing the hydrogen degradation level.…”

Section: Introductionmentioning

confidence: 99%

Effects of hydrogen-charging on the properties of S235JR steel

Pietkun-Greber

2017

E3S Web Conf.

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Abstract. The paper presents the test results of the S235JR steel susceptibility to damage under the influence of hydrogen. The test of mechanical properties was performed on the basis of a static stretch test of non-hydrogenated samples and after cathodic polarization. Electrochemical measurements for the assessment of corrosion resistance of non-hydrogenated and hydrogenated steels were carried out using open circuit potential measurement and registering of potentiodynamic polarization curves in a three-electrode measuring system. Hydrogenation was carried out for between 3 and 24 hours in a solution of 0.1 N sulfuric acid (VI) with the addition of 2 mg/dm 3 of arsenic oxide (III) at an electric current density of 10 mA/cm 2 . The hydrogen content in the steel before and after saturation with hydrogen was determined using the analyzer. Fracture samples after tensile test were observed using scanning electron microscope. The results of the research showed that as the hydrogen concentration in the examined steel increased (the lengthening of the saturation time), the deterioration of its mechanical and electrochemical properties occurred.

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Hydrogen embrittlement of microalloyed rail steels

Cited by 25 publications

References 8 publications

Hydrogen Embrittlement of a Manganese–aluminum High-strength Bainitic Steel for Railway Crossings

Hydrogen Embrittlement of a Manganese–aluminum High-strength Bainitic Steel for Railway Crossings

A Comparative Study on Corrosion Behaviors of Pearlitic Rails Generally Used in Railway Tracks

Effects of hydrogen-charging on the properties of S235JR steel

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