Hydrogen-embrittlement resistance of X100 steels for long-distance high-pressure pipelines

Barsanti, L.; Bolzoni, F.; Cabrini, Marina; Pastore, Tommaso; Spinelli, Carlo

doi:10.1016/b978-008044635-6.50066-2

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…accelerated cooling or quenching and tempering heat treatment) and the microstructures are quite different compared to traditional ferrite-perlite high strength low alloyed steels (HSLA) steels. Previous works confirmed the positive effect of these microstructures on the resistance against hydrogen embrittlement [11]. However, environmental effects occurred on cathodically protected HSLA steels only after necking as demonstrated by the presence of secondary cracks limited at this zone [21].…”

Section: Introductionmentioning

confidence: 66%

“…A sinusoidal loading was imposed; R was fixed at 0.6 and the frequency range was between 20 Hz and 0.2 Hz for the tests in air and in seawater, respectively. The crack length (aN) was measured by using compliance methods as described in [11] in function of elapsed cycle number (N). Stress intensity factor range (∆K) was evaluated according to the equation reported in ASTM E399-90 Standard.…”

Section: Methodsmentioning

confidence: 99%

“…high stress levels) [9,10]. The environmental factor is related to hydrogen embrittlement phenomena mainly occurring at crack tip [11]. It is expected to be more evident on high strength steels because they are generally considered more susceptible to hydrogen embrittlement [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fatigue-Corrosion of High Strength Steels in Synthetic Seawater under Cathodic Protection

Lorenzi

Testa

Cabrini

et al. 2020

KEM

View full text Add to dashboard Cite

The paper is aimed to the study of the corrosion-fatigue behavior of high strength steels for offshore pipelines. Tests have been performed in order to study fatigue crack growth in synthetic seawater under cathodic protection. The tests have been carried out on three different steel grades from 65 to 85 ksi with tempered martensite and ferrite-bainite microstructures. The effect of stress intensity factor, cathodic protection potential and cyclic loading frequency is shown.

show abstract

Section: Introductionmentioning

confidence: 66%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Fatigue-Corrosion of High Strength Steels in Synthetic Seawater under Cathodic Protection

Lorenzi

Testa

Cabrini

et al. 2020

KEM

View full text Add to dashboard Cite

show abstract

Environmentally assisted cracking and hydrogen diffusion in traditional and high-strength pipeline steels

et al. 2015

View full text Add to dashboard Cite

This article deals with the risk of environmentally assisted cracking of steel structures that are kept under cathodic protection (CP). The experimental results collected on both hydrogen diffusion and hydrogen embrittlement (HE) of high-strength low-alloy (HSLA) steels under CP are discussed. Hydrogen diffusion was evaluated by permeation experiments and a scanning photoelectrochemical current technique, as a function of microstructure orientation, on both loaded and unloaded specimens. HE tests were carried out under constant load, slow strain rate (SSR tests), and slow bending conditions. Tests were also carried out on several grades of HSLA steel having different microstructures. The results confirm that HE in artificial seawater under CP can occur in steel with tensile yield strength in the range of 400–660 MPa only in the presence of high cathodic polarization and continuous plastically straining conditions. HE susceptibility increased with increasing applied cathodic polarization and with decreasing strain rate. HE susceptibility of the rolled steels at relatively high strain rate (10-4 to 10-5 s-1) increased with the hydrogen diffusion coefficient. Similar results were observed in terms of the HE contribution to corrosion fatigue crack growth rate. High-temperature-tempered martensitic steels showed a lower HE susceptibility.

show abstract

Hydrogen-embrittlement resistance of X100 steels for long-distance high-pressure pipelines

Cited by 2 publications

References 0 publications

Fatigue-Corrosion of High Strength Steels in Synthetic Seawater under Cathodic Protection

Fatigue-Corrosion of High Strength Steels in Synthetic Seawater under Cathodic Protection

Environmentally assisted cracking and hydrogen diffusion in traditional and high-strength pipeline steels

Contact Info

Product

Resources

About