Hydrogen embrittlement testing procedure for the analysis of structural steels with Small Punch Tests using notched specimens

Álvarez, G.; Zafra, A.; Belzunce, F. J.; Rodríguez, Celestino

doi:10.1016/j.engfracmech.2021.107906

Cited by 18 publications

(6 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lastly, as this proposal is more geared towards technology transfer, it is mentionable that many of these investigations have given rise to numerous patents that are capable of being industrially implemented and commercialized [20]. However, the vast majority of these works have been fundamentally oriented towards the analysis of metallic alloys [12,21] or polymeric materials such as nylon fibers [22] and ABS materials [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

On different 3D printing methods and fracture performance in DCB composite specimens including structured interfaces

Aranda

Reinoso

García

2022

Theoretical and Applied Fracture Mechanics

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

On different 3D printing methods and fracture performance in DCB composite specimens including structured interfaces

Aranda

Reinoso

García

2022

Theoretical and Applied Fracture Mechanics

View full text Add to dashboard Cite

“…[11,12]. On the other hand, the microstructure and mechanical properties of steels strongly depend on the applied heat treatment, it being now well known that steels with higher strength are more susceptible to hydrogen embrittlement [13,14]. It is therefore necessary to study the influence of all these variables on the behavior of steels by means of appropriate laboratory tests.…”

Section: Introductionmentioning

confidence: 99%

Effect of Internal Hydrogen on the Fatigue Crack Growth Rate in the Coarse-Grain Heat-Affected Zone of a CrMo Steel

Álvarez

Zafra

Belzunce

et al. 2022

Metals

View full text Add to dashboard Cite

The effect of internal hydrogen in the fatigue crack growth rate of the coarse grain region of a 2.25Cr1Mo steel welded joint was analyzed in this work. The microstructure of the coarse grain region was simulated by means of a heat treatment able to provide the same microstructure with a similar prior austenite grain size and hardness to the one in a real welded joint. The fatigue crack growth rate was measured under standard laboratory conditions using compact tensile (CT) specimens that were (i) uncharged and hydrogen pre-charged in a hydrogen pressure reactor (under 19.5 MPa and 450 °C for 21 h). The influence of fatigue frequency was assessed using frequencies of 10 Hz, 0.1 Hz, and 0.05 Hz. Additionally, two load ratios (R = 0.1 and R = 0.5) were applied to analyze their influence in the da/dN vs. ∆K curves and therefore in the fatigue crack growth rate. The embrittlement produced by the presence of internal hydrogen was clearly noticed at the beginning of the fatigue crack growth rate test (ΔK = 30 MPm), obtaining significant higher values than without hydrogen. This effect became more notorious as the test frequency decreased and the load ratio increased. At the same time, the failure mechanism changed from ductile (striations) to brittle (hydrogen decohesion) with intergranular fracture (IG) becoming the predominant failure mechanism under the highest loads (R = 0.5).

show abstract

“…The 7075 aluminum alloy sample is used as the cathode. The electrolyte composition is Na 2 HAsO 4 •7H 2 O, and a trace of As 2 O 3 is added as a poisoning agent [46]. This can make it more difficult for hydrogen atoms to combine, which will help increase the concentration of hydrogen atoms on the surface of the sample.…”

Section: Electrochemical Cathode Hydrogen Permeation Methodsmentioning

confidence: 99%

Analysis of Hydrogen Embrittlement on Aluminum Alloys for Vehicle-Mounted Hydrogen Storage Tanks: A Review

Chen

Zhao

et al. 2021

Metals

View full text Add to dashboard Cite

High-pressure hydrogen tanks which are composed of an aluminum alloy liner and a carbon fiber wound layer are currently the most popular means to store hydrogen on vehicles. Nevertheless, the aluminum alloy is easily affected by high-pressure hydrogen, which leads to the appearance of hydrogen embrittlement (HE). Serious HE of hydrogen tank represents a huge dangers to the safety of vehicles and passengers. It is critical and timely to outline the mainstream approach and point out potential avenues for further investigation of HE. An analysis, including the mechanism (including hydrogen-enhanced local plasticity model, hydrogen-enhanced decohesion mechanism and hydrogen pressure theory), the detection (including slow strain rate test, linearly increasing stress test and so on) and methods for the prevention of HE on aluminum alloys of hydrogen vehicles (such as coating) are systematically presented in this work. Moreover, the entire experimental detection procedures for HE are expounded. Ultimately, the prevention measures are discussed in detail. It is believed that further prevention measures will rely on the integration of multiple prevention methods. Successfully solving this problem is of great significance to reduce the risk of failure of hydrogen storage tanks and improve the reliability of aluminum alloys for engineering applications in various industries including automotive and aerospace.

show abstract

Hydrogen embrittlement testing procedure for the analysis of structural steels with Small Punch Tests using notched specimens

Cited by 18 publications

References 48 publications

On different 3D printing methods and fracture performance in DCB composite specimens including structured interfaces

On different 3D printing methods and fracture performance in DCB composite specimens including structured interfaces

Effect of Internal Hydrogen on the Fatigue Crack Growth Rate in the Coarse-Grain Heat-Affected Zone of a CrMo Steel

Analysis of Hydrogen Embrittlement on Aluminum Alloys for Vehicle-Mounted Hydrogen Storage Tanks: A Review

Contact Info

Product

Resources

About