Journal ArticleDOI
Equivalent Hydrogen Fugacity during Electrochemical Charging of 980DP Steel Determined by Thermal Desorption Spectroscopy
Qinglong Liu,Evan Gray,Jeffrey Venezuela,Qingjun Zhou,Clotario Tapia-Bastidas,Clotario Tapia-Bastidas,Ming-Xing Zhang,Andrej Atrens +7 more
TLDR
In this paper, thermal desorption spectroscopy (TDS) was used to analyze hydrogen in 980DP after electrochemical charging, and gaseous charging, indicating an influence of steel chemistry on the hydrogen evolution reaction.Abstract:
Thermal desorption spectroscopy (TDS) is used to analyze hydrogen in 980DP after (i) electrochemical charging, and (ii) gaseous charging. The hydrogen concentration increases with (i) a more negative charging potential and (ii) an increasing hydrogen gas pressure. For charging in 0.1 M NaOH, the hydrogen fugacity for 980DP is similar to that for (i) low interstitial steel, and (ii) MS1500, and is greater than that for the 3.5NiCrMoV steel. This indicates an influence of steel chemistry on the hydrogen evolution reaction. The de-trapping activation energies are 40.5 and 50.2 kJ mol−1, indicating hydrogen traps at boundary defects.read more
Citations
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Mechanical Metamaterials and Their Engineering Applications
Journal ArticleDOI
Hydrogen embrittlement in different materials: A review
TL;DR: In this article, the authors deal with HE definition, mechanisms which causes HE, subcritical crack growth, the concentration of hydrogen measurement and prevention activities are discussed which act as a barrier for hydrogen diffusion.
Journal ArticleDOI
About metastable cellular structure in additively manufactured austenitic stainless steels
Decheng Kong,Decheng Kong,Chaofang Dong,Shaolou Wei,Xiaoqing Ni,Liang Zhang,Ruixue Li,Li Wang,Cheng Man,Xiaogang Li +9 more
TL;DR: In this article, the authors review the most recent research momentum regarding the formation mechanisms (elemental segregation, dislocation cell and oxide inclusion), the kinetics of the size and morphology, the growth orientation and the thermodynamic stability of these cellular structures by taking AM austenitic stainless steel as an exemplary material.
Journal ArticleDOI
Stereolithographic 3D Printing-Based Hierarchically Cellular Lattices for High-Performance Quasi-Solid Supercapacitor.
TL;DR: The stereolithographic technique to fabricate the metallic composite lattices with octet-truss arrangement by using electroless plating and engineering the 3D hierarchically porous graphene onto the scaffolds to build the hierarchically cellular lattices in quasi-solid supercapacitor application is proposed.
Journal ArticleDOI
Semi-crystalline feedstock for filament-based 3D printing of polymers
Dries Vaes,Peter Van Puyvelde +1 more
TL;DR: A broad overview of FFF processing of semicrystalline polymers can be found in this paper, where the impact of processing conditions and feedstock modifications, such as the incorporation of fillers or the formation of blends, on crystallinity as well as the microstructure of printed parts, the impact on the micro-structure on the mechanical performance, and general part quality.
References
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TL;DR: The relative amount of trapped hydrogen and the activation energy for its evolution from various lattice defects in iron were calculated by monitoring the pressure change caused by release of hydrogen from charged specimens heated at uniform heating rates as discussed by the authors.
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A classification of hydrogen traps in steel
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