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Showing 1 to 6 of 6 for “"Hydrogen induced cracking"”.
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Microstructure Optimization to Prevent Hydrogen-Induced Cracking of API X70 Pipeline Steels in Sour Environments
… into two major categories: stress corrosion cracking (SCC) and hydrogen assistant cracking (HAC). Hydrogen-induced cracking (HIC) is the main cause of pipeline steels failure in sour environments, which is categorized as a type of HAC. In this type of failure, hydrogen atoms accumulate in the …
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In Process Measurement of Hydrogen In Welding
The deleterious effects of atomic, or diffusible, hydrogen dissolved in welds on their mechanical properties have been known for over four decades. However, post weld inspection and repair of hydrogen induced cracks in welds remains the only means of correcting the defects produced by excess …
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Weldability and hydrogen relationships in super duplex stainless steel.
… 50% ferrite, the response of these two phases to hydrogen is of interest to the users of these materials. A study has been made of the hydrogen cracking behaviour in welded super duplex stainless steel using the GTA welding process. The aim of this work was to determine the effects of diffusible …
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Micromechanics of Hydrogen-Induced Crack Initiation in Pipeline Steels and Subcritical Crack Growth
To further explore the influence of hydrogen on ductile fracture, we model sustained-load cracking in the iron-base superalloy 1N903 at hydrogen pressures at which fracture is governed by plasticity. Through a micromechanics analysis, we quantify the void growth dependence on stress triaxiality and …
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Well Integrity Mapping Using Hybrid Model Based on Physics of Failure and Data-Driven Methods
… strength due to wear during drilling, stress and hydrogen induced cracking over a period of ten years. The failure probability of reduced strength of casing changes with time. The remaining useful life is calculated for the depths of interest and time along with 95% confidence intervals. The model …
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Sulfide stress cracking resistance of API-X100 high strength low alloy steel in H2S environments
Sulfide Stress Cracking (SSC) resistance of the newly developed API-X100 High Strength Low Alloy (HSLA) steel was investigated in the NACE TM0177 "A" solution. The NACE TM0177 "A" solution is a hydrogen sulfide (H2S) saturated solution containing 5.0 wt.% sodium chloride (NaC1) and 0.5 wt.% acetic …