Results 11 to 20 of about 25,129 (223)

Investigation of the impact of grain boundary hydrogen concentration on hydrogen embrittlement sensitivity of polycrystalline Fe: Molecular dynamics insights

open access: yesSmart Molecules
This study investigates the influence of hydrogen concentration at grain boundaries on the sensitivity of polycrystalline iron to hydrogen embrittlement using molecular dynamics simulations.
Qiaoyun Tang, Wei Gao
doaj   +2 more sources

Influence Law of Hydrogen Pressure on Hydrogen Embrittlement Sensitivity of L80 Steel [PDF]

open access: yesCailiao Baohu, 2022
The hydrogen embrittlement sensitivity of L80 steel under different hydrogen pressure at room temperature was evaluated this work. The variation rules of hydrogen embrittlement sensitivity of L80 steel at hydrogen pressure from 3 MPa to 12 MPa were ...
DONG Jing - nan, LIU Yi - shan, ZHANG Xu - chu, WANG Chao - yang, LUO Miao, SHI Gui - yuan, LIU Xiao - tong, YANG Zhi - wen, CHEN Ying - feng
doaj   +1 more source

Experimental investigation on the hydrogen embrittlement characteristics and mechanism of natural gas-hydrogen transportation pipeline steels

open access: yesMaterials Research Express, 2022
Hydrogen blended with natural gas is one of the best ways for large-scale hydrogen transportation; however, pipeline steels exploited for transferring natural gas have the risk of hydrogen embrittlement.
Liuxi Cai   +4 more
doaj   +1 more source

Hydrogen Embrittlement of Inconel 718 Manufactured by Laser Powder Bed Fusion Using Sustainable Feedstock: Effect of Heat Treatment and Microstructural Anisotropy

open access: yesMetals, 2023
This study investigated the in-situ gaseous (under 150 bar) hydrogen embrittlement behaviour of additively manufactured (AM) Inconel 718 produced from sustainable feedstock.
Naveen Karuthodi Mohandas   +5 more
doaj   +1 more source

Improving Hydrogen Embrittlement Resistance of Hot-Stamped 1500 MPa Steel Parts That Have Undergone a Q&P Treatment by the Design of Retained Austenite and Martensite Matrix

open access: yesMetals, 2020
Hydrogen embrittlement is one of the largest obstacles against the commercialisation of ultra-high strength quenching and partitioning (Q&P) steels with ultimate tensile strength over 1500 MPa, including the hot stamped steel parts that have undergone a ...
Zhou Wang, Mingxin Huang
doaj   +1 more source

Simulating hydrogen embrittlement fracture based on phase field method

open access: yesXibei Gongye Daxue Xuebao, 2022
The phase field hydrogen embrittlement fracture model is improved by introducing tension-compression split of strain energy. The numerical formulas of the model are provided, besides, the coupling term of concentration field and displacement field is ...
CHEN Pengcheng   +3 more
doaj   +1 more source

Review of Characterization on Hydrogen Embrittlement by Micro-Sample Testing Methods

open access: yesMetals, 2023
Conventional-sized specimens have been well and widely applied in research on hydrogen embrittlement. However, when the limited-size core components (nozzles and valves, etc.) of hydrogen energy equipment are evaluated for service damage, traditional ...
Ping Tao   +4 more
doaj   +1 more source

Research progress of hydrogen compatibility testing methods and hydrogen embrittlement prevention measures for pipeline steel

open access: yesYou-qi chuyun, 2023
Understanding the causes of hydrogen embrittlement and its detrimental effects is essential for ensuring the integrity of pipeline steel. Various testing methods, including slow strain rate and fatigue life testing, are commonly employed to evaluate the ...
WANG Yuchen   +3 more
doaj   +1 more source

Effects of Sheared Edge and Overlap Length on Reduction in Tensile Fatigue Limit before and after Hydrogen Embrittlement of Resistance Spot-Welded Ultra-High-Strength Steel Sheets

open access: yesMetals, 2023
The effects of a sheared edge and overlap length on the reduction in the tensile fatigue limit before and after hydrogen embrittlement of resistance spot-welded ultra-high-strength steel sheets were investigated.
Ryo Yagita, Yohei Abe
doaj   +1 more source

Research progress on hydrogen embrittlement in hydrogen-blended natural gas transportation system

open access: yesYou-qi chuyun, 2022
Hydrogen-blended natural gas transportation can effectively solve the problem of wind and photovoltaic energy curtailment and reduction of greenhouse gas emission, and realize the low-cost transportation of hydrogen in large scale, so it becomes an ...
Weiqing XU   +7 more
doaj   +1 more source

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