Temperature effects on gaseous hydrogen embrittlement of a high-strength steel

Tan, S. M.; Gao, Shujun; Wan, Xiaofang

doi:10.1007/bf00465578

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…A model proposed in [36][37][38][39] based on the coverage of hydrogen adsorption sites was proven to contain misinterpretations [51], but this basic assumption was used as a starting point for improved models. A semi quantitative model explaining the influence of temperature on hydrogen effects based on trap coverage at the crack tip was able to qualitatively explain the ductility minimum in gaseous hydrogen experiments [52].…”

Section: Discussionmentioning

confidence: 99%

“…Multiple results were found in the open literature while investigating the effect of temperature upon the mechanical properties of steels with a bcc microstructure (ferrite, pearlite, bainite, martensite, etc., and combinations thereof); see Table 3. To simplify the presentation, the data were grouped into four steel classes, i.e., iron [30,31], carbon steels [5,30,[32][33][34][35], heat-treatable steels [13,32,[36][37][38][39][40][41][42][43][44], and high alloyed bcc steels [9,13,[45][46][47][48][49][50]. The T HE,max data for bcc steels scattered significantly.…”

Section: Steels With a Cubic Body-centered (Bcc) Latticementioning

confidence: 99%

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Review on the Influence of Temperature upon Hydrogen Effects in Structural Alloys

Michler

Schweizer

Wackermann

2021

Metals

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It is well-documented experimentally that the influence of hydrogen on the mechanical properties of structural alloys like austenitic stainless steels, nickel superalloys, and carbon steels strongly depends on temperature. A typical curve plotting any hydrogen-affected mechanical property as a function of temperature gives a temperature THE,max, where the degradation of this mechanical property reaches a maximum. Above and below this temperature, the degradation is less. Unfortunately, the underlying physico-mechanical mechanisms are not currently understood to the level of detail required to explain such temperature effects. Though this temperature effect is important to understand in the context of engineering applications, studies to explain or even predict the effect of temperature upon the mechanical properties of structural alloys could not be identified. The available experimental data are scattered significantly, and clear trends as a function of chemistry or microstructure are difficult to see. Reported values for THE,max are in the range of about 200–340 K, which covers the typical temperature range for the design of structural components of about 230–310 K (from −40 to +40 °C). That is, the value of THE,max itself, as well as the slope of the gradient, might affect the materials selection for a dedicated application. Given the current lack of scientific understanding, a statistical approach appears to be a suitable way to account for the temperature effect in engineering applications. This study reviews the effect of temperature upon hydrogen effects in structural alloys and proposes recommendations for test temperatures for gaseous hydrogen applications.

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Section: Discussionmentioning

confidence: 99%

Section: Steels With a Cubic Body-centered (Bcc) Latticementioning

confidence: 99%

Review on the Influence of Temperature upon Hydrogen Effects in Structural Alloys

Michler

Schweizer

Wackermann

2021

Metals

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“…In general, the FCGRs of T‐250 maraging steel decrease with increased ageing temperature when tested in air 10 . In the presence of hydrogen, the accelerated crack advance is associated with a change of fracture modes 11 –13 . The fatigue crack appearance of the peak‐aged T‐250 is changed from transgranular in air to quasi‐cleavage fracture in gaseous hydrogen 10 …”

Section: Introductionmentioning

confidence: 99%

Reduction of hydrogen embrittlement in an ultra‐high‐strength steel by laser surface annealing

Tsay

Yang

2000

Fatigue Fract Eng Mat Struct

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This paper shows that laser beam irradiation improves the resistance to hydrogen embrittlement (HE) in an ultra‐high‐strength maraging steel. Localized laser irradiation of a peak‐aged steel plate resulted in the formation of a soft surface layer called the laser‐annealed zone (LAZ). A composite region (CR) was formed when both the top and bottom surfaces of a peak‐aged specimen were laser‐annealed (LA) to leave an interior layer of untransformed base metal (BM) sandwiched between the two LAZs. Slow strain rate tensile tests showed that LA specimens had lower strength and ductility than the peak‐aged specimens when tested in air, but in a H2 S solution, the soft LAZs showed less susceptibility to HE than the BM. The fatigue crack growth rates (FCGRs) in the CR were lower than those in the BM regardless of testing environment and stress ratio (R ). The retarded crack growth in the CR was attributed to the combination of residual compressive stresses and the soft microstructures in the LAZs. The tensile fracture appearance of LA specimens tested in a H2 S solution exhibited intergranular fracture in the BM. Fractographs of the fatigue specimens tested in gaseous hydrogen revealed transgranular fracture in the LAZs and mainly quasi‐cleavage fracture in the BM.

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The High Cycle Fatigue and Final Fracture Behavior of an Alloy Steel Used in Hydrogen Pressure Vessels: Influence of Notch

Balogun

Srivatsan

Prakash

et al. 2010

Fatigue of Materials

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Temperature effects on gaseous hydrogen embrittlement of a high-strength steel

Cited by 7 publications

References 7 publications

Review on the Influence of Temperature upon Hydrogen Effects in Structural Alloys

Review on the Influence of Temperature upon Hydrogen Effects in Structural Alloys

Reduction of hydrogen embrittlement in an ultra‐high‐strength steel by laser surface annealing

The High Cycle Fatigue and Final Fracture Behavior of an Alloy Steel Used in Hydrogen Pressure Vessels: Influence of Notch

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