Effects of Alloying Elements on Hydrogen Entry to Low Alloy Steels under a Cyclic Corrosion Condition

Omura, Tomohiko; Matsumoto, Hitoshi; Hasegawa, Tatsuya; Miyakoshi, Yusuke

doi:10.2355/isijinternational.isijint-2015-391

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…Table 1 shows the chemical composition of the iron specimen. Because the sulfur concentration was lower than 0.001 mass%, the formation of sulfide inclusions such as MnS, which was reported to induce the hydrogen absorption, [35][36][37] was inhibited. The pure iron sheet was cut into 25 mm × 25 mm coupons.…”

Section: Specimen and Electrolytementioning

confidence: 99%

Detection of Hydrogen Distribution in Pure Iron Using WO<sub>3</sub> Thin Film

et al. 2018

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The usefulness of a new approach to detecting the distribution of hydrogen absorbed into pure iron utilizing a WO 3 thin film was demonstrated in this study. A WO 3 film with an electrochromic property was formed on the hydrogen detection side of iron sheet by reactive magnetron sputtering. After hydrogen was absorbed into the iron sheet by cathodic polarization on the hydrogen absorption side, the color of the WO 3 film corresponding to the electrode area changed from light blue to dark blue. The WO 3 film was found to reflect the distribution of hydrogen absorbed into the pure iron sheet. No color change occurred on the hydrogen detection side unless a Pd film was inserted between the WO 3 film and the iron specimen. The reflectance of the WO 3 film in the visible region was reduced by hydrogen charging, with a marked reduction in the RGB color values after the start of hydrogen charging. The results of an XPS analysis suggested that the phase transition from WO 3 to H x WO 3 resulted in the color change of the WO 3 film during hydrogen charging. Because of the simplicity of this approach to detecting hydrogen compared to other hydrogen detection methods, it is expected to have various applications.

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Section: Specimen and Electrolytementioning

confidence: 99%

Detection of Hydrogen Distribution in Pure Iron Using WO<sub>3</sub> Thin Film

et al. 2018

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“…Since the amount of hydrogen permeated into steel plays an essential role in the hydrogen embrittlement or delayed fracture of steel, it is significant to clarify how much hydrogen can be permeated into steel during service in a certain environment [17,18]. Over the past few decades, important progress has been made on understanding the hydrogen permeation behavior of steel in atmospheric environments [14,[19][20][21], but relevant information on such behavior of steel in more complex and harsh marine environments remains limited. Therefore, systematic and scientific research should be carried out on the hydrogen permeation behavior of steels in marine environments.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Hydrogen Permeation into High-Strength Steel during Corrosion in Different Marine Corrosion Zones

Huang

Cai

et al. 2022

Applied Sciences

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Hydrogen permeation into high-strength steel during the corrosion process can deteriorate their mechanical properties, thus seriously threatening the safety of steel structures. However, the hydrogen permeation behavior of steels in corrosive marine environments is not well understood. In this study, the hydrogen permeation behavior and mechanism of AISI 4135 steel in different marine corrosion zones was investigated for the first time using an in situ hydrogen permeation monitoring system via outdoor and indoor tests. The three-month outdoor hydrogen permeation test showed that the diffusible hydrogen content of the steels exposed to the marine atmospheric, splash, tidal and immersion zone was 3.15 × 10−3, 7.00 × 10−2, 2.06 × 10−2 and 3.33 × 10−2 wt ppm, respectively. Meanwhile, results showed that the hydrogen permeation current density was positively correlated with the corrosion rate of the steel in the marine environments. This research is of great significance for guiding the safe application of high-strength steel in the marine environments.

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“…However, the research of SSC resistant-high strength steel is not easy to be achieved, because the resistance of SSC is inversely proportional to the strength. That is, the higher in its strength, the lower in its performance of SSC resistance [8][9]. In order to solve this problem, some researchers have done a lot of research.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nickel Content on Mechanical Property and Microstructure for Sulfide Stress Corrosion High-Strength Steel

Zhang

Wang

Zhu

et al. 2018

MSF

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Two types of steels which are different in Ni content were tested in three groups of different quenching temperatures and same tempering temperature respectively under the same conditions, and then tested the mechanical properties and observated the microstructure, comparing with the effects of different Ni content on the microstructure and properties. When 1Ni-steel is under the different quenching temperature, its tensile strength range is 1269-1290MPa and changes subtlely. The yield strength and impact energy reach the highest at 910°C, and the mircostructure is fine and uniform. With the quenching temperature increasing, the strength of 3Ni-steel decreases ,but the toughness increases comparing with both kinds of the steels, the microstructure of 3Ni-steel has much more hard phases in its tempered martensite microstructure. Its tensile strength, yield strength and toughness are higher than 1Ni-steel at the lower quenching temperature. The inclusions of 3 Ni-steel are characterized by spheroidization and refinement. In the NACE-A test, the SSC resistance of 3Ni-steel is better than that of 1Ni-steel, which indicates that the high Ni steel has better comprehensive properties.

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Effects of Alloying Elements on Hydrogen Entry to Low Alloy Steels under a Cyclic Corrosion Condition

Cited by 10 publications

References 16 publications

Detection of Hydrogen Distribution in Pure Iron Using WO<sub>3</sub> Thin Film

Detection of Hydrogen Distribution in Pure Iron Using WO<sub>3</sub> Thin Film

Evaluation of Hydrogen Permeation into High-Strength Steel during Corrosion in Different Marine Corrosion Zones

Effect of Nickel Content on Mechanical Property and Microstructure for Sulfide Stress Corrosion High-Strength Steel

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