Results 41 to 50 of about 9,384 (159)

Hydrogen embrittlement of ferrite-pearlite OCTG steels under electrochemical and gaseous hydrogen environment

Journal of Materials Research and Technology
This study investigates the hydrogen embrittlement behavior under electrochemical and gaseous hydrogen charging conditions, providing a multi-scale analysis of the correlation between fracture behavior and microstructural factors in ferrite-pearlite OCTG
Dong-Kyu Oh, Byoungchul Hwang
doaj   +1 more source

The Effects of Electrochemical Hydrogen Charging on Room-Temperature Tensile Properties of T92/TP316H Dissimilar Weldments in Quenched-and-Tempered and Thermally-Aged Conditions

Metals, 2019
The influence of isothermal aging at 620 °C in combination with subsequent electrochemical hydrogen charging at room-temperature was studied on quenched-and-tempered T92/TP316H martensitic/austenitic weldments in terms of their room-temperature ...
Peter Ševc, Ladislav Falat, Lucia Čiripová, Miroslav Džupon, Marek Vojtko   +4 more
doaj   +1 more source

Modeling bulk diffusion of hydrogen in X70 pipeline steel

Scientific Reports
Hydrogen bulk diffusion and saturation of X70 pipeline steel was investigated by employing high-pressure gaseous hydrogen charging, thermal desorption analysis/spectroscopy (TDA/TDS) and numerical modeling/simulation of bulk diffusion. The trapping model
Andreas Drexler, Sergio Pastore, Josef Domitner   +2 more
doaj   +1 more source

Determination of the equivalent hydrogen fugacity during electrochemical charging of 3.5NiCrMoV steel [PDF]

Corrosion Science, 2018
A new thermal desorption spectroscopy (TDS) apparatus was used to identify the hydrogen trapping peaks, and to measure the hydrogen concentrations in 3.5NiCrMoV steel after hydrogen charging electrochemically, and in gaseous hydrogen. The hydrogen concentration increased with (i) increasingly negative charging potential and (ii) increasing hydrogen gas
Venezuela, Jeffrey, Tapia-Bastidas, Clotario, Zhao, Qingjun, Depover, Tom, Verbeken, Kim, Gray, Evan, Liu, Qinglong, Liu, Qian, Zhang, Mingxing, Atrens, Andrej   +9 more
openaire   +4 more sources

Effect of Hydrogen on Tensile Properties and Fracture Behavior of Two High-Strength American Petroleum Institute Linepipe Steels

Metals
This study explored the influence of hydrogen on the tensile properties and fracture behavior of high-strength API X70 and X80 linepipe steels with bainitic microstructures under varying hydrogen charging conditions.
Dong-Kyu Oh, Min-Seop Jeong, Seung-Hyeok Shin, Byoungchul Hwang   +3 more
doaj   +1 more source

Hydrogen Embrittlement of a T95 Low-Alloy Steel Charged by Electrochemical Method

Materials
The hydrogen embrittlement of a typical Oil Country Tubular Good (OCTG) steel, API 5CT T95, was investigated through electrochemical hydrogen pre-charging followed by mechanical testing. J-integral and tensile tests were performed on electrochemically pre-charged samples, with varying charging conditions to simulate different hydrogen environmental ...
Luca Paterlini, Laura Vergani, Marco Ormellese, Arianna Curia, Giorgio Re, Fabio Bolzoni   +5 more
openaire   +2 more sources

Systematic quantification of hydrogen in pipeline steel by atom probe tomography after ambient charging and transfer

npj Materials Degradation
Atom probe tomography (APT) is a promising tool to measure the atomic-scale distribution of hydrogen in solid matter for the assessment of hydrogen embrittlement susceptibility of materials.
Shuohan Wang, Peng Zhang, Majid Laleh, Lu Jiang, Mike Yongjun Tan, Ross K. W. Marceau   +5 more
doaj   +1 more source

Effect of electrochemical hydrogen charging on the microstructure and mechanical behavior of a duplex structured Mg-8wt.%Li alloy

Journal of Magnesium and Alloys
In this work, through performing microstructural characterization, tensile testing and failure analysis, the influence of electrochemical hydrogen charging on the microstructure and mechanical behavior of an as-cast Mg-8wt.%Li alloy was investigated.
Shuo Wang, Daokui Xu, Baojie Wang, Dongliang Wang, Zhiqiang Zhang, Li Liu, Jie Chen   +6 more
doaj   +1 more source

Effect of oxygen and nitrogen on hydrogen adsorption and permeation processes

Journal of Pipeline Science and Engineering
This study investigated the effect of oxygen and nitrogen on hydrogen adsorption and permeation by combining electrochemical hydrogen permeation tests with density functional theory calculations.
Lin Chen, Meng Sun, Shiwen Guo, Boxing Han, Heng Liu, Haozhi Wu, Shaohua Dong, Keke Song   +7 more
doaj   +1 more source

Investigation of Welded Joints of Pipelines from an Existing Gas Transmission Network Exposed to Hydrogen—Part I: Structure, Mechanical Properties and Susceptibility to Hydrogen Embrittlement

Metals
The utilization of hydrogen as a clean energy carrier requires an assessment of existing natural gas pipelines with respect to hydrogen embrittlement (HE). In this study, the structural integrity and hydrogen sensitivity of X52 (L360) pipeline steel from
Boris Yanachkov, Kateryna Valuiska, Yana Mourdjeva, Rumen Krastev, Vanya Dyakova, Tatiana Simeonova, Roumen H. Petrov, Krasimir Kolev, Margo Cauwels, Tom Depover, Rumyana Lazarova   +10 more
doaj   +1 more source