Effects of hydrogen on fatigue crack growth behavior of austenitic stainless steels

Kanezaki, Toshihiko; Narazaki, Chihiro; Mine, Yoji; Matsuoka, Saburo; Murakami, Yukitaka

doi:10.1016/j.ijhydene.2008.02.067

Cited by 231 publications

(110 citation statements)

References 39 publications

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“…Hydrogen was charged into specimens either by cathodic charging [36] or by exposure to high-pressure hydrogen gas. The high-pressure hydrogen gas exposure was carried out in 63 MPa hydrogen gas at 110°C for 91 hours.…”

Section: B Methods Of Hydrogen Chargingmentioning

confidence: 99%

“…It was confirmed that cutting disks from a specimen did not affect the hydrogen content of the disk sample. [36] Figure 2 shows the hydrogen desorption spectra for an uncharged type 316L specimen (curve A) and for a hydrogen-charged specimen (curve B). The height of the peak at around 300°C, which indicates diffusible hydrogen, shows an increase due to hydrogen charging.…”

Section: Methods Of Fatigue Testingmentioning

confidence: 99%

“…The level of hydrogen content in ordinary heat-treated bcc metals is on the order of 0.01 wppm [34,35] and, in ordinary solution-treated austenitic stainless steels, [36] it is on the order of 2 to approximately 3 wppm. This level of hydrogen content in austenitic stainless steels has been considered to be normal, and is the amount of nondiffusible (irreversible) hydrogen.…”

Section: A Hydrogen Content In Materialsmentioning

confidence: 98%

“…On the other hand, since the hydrogen diffusion rates in austenitic stainless steels are on the order of 10 -4 those of bcc metals, [36,38,39] both diffusible and nondiffusible hydrogen remain in a material for a long time. However, here we have a mystery: why does a hydrogen level of 2 to approximately 3 wppm in solution-treated austenitic stainless steels not influence HE?…”

Section: A Hydrogen Content In Materialsmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] The present authors have investigated microscopically the effect of hydrogen on fatigue crack growth behavior, including the measurement of the exact hydrogen content, in various materials such as low-carbon, Cr-Mo, and stainless steels. For example, particularly important phenomena found by the authors' fatigue studies (Murakami et al, [32,33] Uyama et al, [34,35] Kanezaki et al, [36] and Tanaka et al [37] ) are the localization of fatigue slip bands, strain-induced martensitic transformation in types 304, 316, and even 316L, and also strong frequency effects on fatigue crack growth rates. These unique phenomena observed in fatigue experiments are presumed to have an important correlation with the basic process of the HELP model proposed by Birnbaum et al [3][4][5] In this study, the load frequency effect of hydrogen on fatigue crack growth rates has been revealed to be a coupled phenomenon between fatigue crack growth rates and hydrogen diffusion rates to fatigue crack tips, i.e., the competition between the crack growth rate and the hydrogen diffusion rate.…”

Section: Introductionmentioning

confidence: 97%

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Hydrogen Embrittlement Mechanism in Fatigue of Austenitic Stainless Steels

Murakami

Kanezaki

Mine

et al. 2008

Metall Mater Trans A

200

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YUKITAKA MURAKAMI, TOSHIHIKO KANEZAKI, YOJI MINE, and SABURO MATSUOKAThe basic mechanism of the hydrogen embrittlement (HE) of stainless steels under fatigue loading is revealed as microscopic ductile fracture, resulting from hydrogen concentration at crack tips leading to hydrogen-enhanced slip. Fatigue crack growth rates in the presence of hydrogen are strongly frequency dependent. Nondiffusible hydrogen, at a level of 2 to approximately 3 wppm, is contained in ordinarily heat-treated austenitic stainless steels, but, over the last 40 years, it has been ignored as the cause of HE. However, it has been made clear in this study that, with decreasing loading frequency down to the level of 0.0015 Hz, the nondiffusible hydrogen definitely increases fatigue crack growth rates. If the nondiffusible hydrogen at O-sites of the lattice is reduced to the level of 0.4 wppm by a special heat treatment, then the damaging influence of the loading frequency disappears and fatigue crack growth rates are significantly decreased.

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Section: B Methods Of Hydrogen Chargingmentioning

confidence: 99%

Section: Methods Of Fatigue Testingmentioning

confidence: 99%

Section: A Hydrogen Content In Materialsmentioning

confidence: 98%

Section: A Hydrogen Content In Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 3 more Smart Citations

Hydrogen Embrittlement Mechanism in Fatigue of Austenitic Stainless Steels

Murakami

Kanezaki

Mine

et al. 2008

Metall Mater Trans A

200

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The Influence of Hydrogen on the Low Cycle Fatigue Behavior of Medium Strength 3.5NiCrMoV Steel Studied Using Notched Specimens

Liu

Atrens

2017

Adv Eng Mater

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The influence of hydrogen on low cycle fatigue (LCF) of 3.5NiCrMoV steel electrochemically hydrogen charged in the acidified pH 2 0.1 M Na2SO4 solution is studied. In the presence of hydrogen, the fatigue life decreases significantly by ≈70 to ≈80% by: (i) the crack initiation period is decreased; and (ii) the crack growth rate is accelerated. SEM observation indicates that in the presence of hydrogen, the fracture surface shows flat transgranular fracture with vague striations and some intergranular fracture at lower stresses. The fatigue crack growth rate increases with increasing cyclic stress amplitude and with hydrogen fugacity. Once the fatigue crack reaches a critical length, the specimen becomes mechanical unstable and fracture due to ductile overload occurs. The hydrogen contribution to the final fracture process is not significant.

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Challenges in Laboratory Catalytic Testing for Ammonia Decomposition under Industrially Relevant Conditions

Gómez‐Cápiro,

Ristig,

Folke

et al. 2023

Energy Tech

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Fundamental studies on screening catalyst materials with potential for application in large‐scale industrial ammonia reforming processes pose a significant challenge. Not only are the requirements on the catalyst itself critical, but the industrially relevant reaction conditions impose very high demands on the reactor materials, especially in terms of temperature and corrosion resistance, as well as the general layout of a suitable test rig on laboratory scale. Here, an automatized setup for high‐throughput studies on heterogeneous catalysts in ammonia decomposition, with a strong focus on reactor material selection and the capability of the setup to generate highly reproducible and thus comparable results, is described. With this approach, it is ultimately possible to contribute to identify possible catalyst materials applicable in industrial ammonia reforming.

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Effects of hydrogen on fatigue crack growth behavior of austenitic stainless steels

Cited by 231 publications

References 39 publications

Hydrogen Embrittlement Mechanism in Fatigue of Austenitic Stainless Steels

Hydrogen Embrittlement Mechanism in Fatigue of Austenitic Stainless Steels

The Influence of Hydrogen on the Low Cycle Fatigue Behavior of Medium Strength 3.5NiCrMoV Steel Studied Using Notched Specimens

Challenges in Laboratory Catalytic Testing for Ammonia Decomposition under Industrially Relevant Conditions

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