Search Results - "Christien, Frederic"

Role of Impurity Sulphur in the Ductility Trough of Austenitic Iron-Nickel Alloys by Christien, Frédéric

“…The role of impurity sulphur in the ductility trough of iron-nickel (Fe-Ni) alloys is investigated using hot tensile tests. A strong detrimental effect of some…”
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A comparative study of microstructure and hydrogen embrittlement of selective laser melted and wrought 17–4 PH stainless steel by Alnajjar, Michella, Christien, Frédéric, Bosch, Cédric, Wolski, Krzysztof

“…In this study, the microstructure and hydrogen embrittlement of 17–4 PH stainless steel produced by Selective Laser Melting (SLM) were investigated. The…”
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Investigating the origins of the 'double rise' shape in hydrogen permeation transients on pure iron by Alzein, Sarah, Dreano, Alixe, Christien, Frederic

“…This study delves into the underlying causes of the atypical 'double rise' shape observed in hydrogen permeation rising transients on pure iron and low alloy…”
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Evidence of austenite by-passing in a stainless steel obtained from laser melting additive manufacturing by Alnajjar, Michella, Christien, Frédéric, Wolski, Krzysztof, Bosch, Cedric

“…[Display omitted] Microstructural characterization was carried out on AISI 17-4 PH stainless steel fabricated by selective laser melting (SLM) in an argon…”
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Investigation of quasi-cleavage in a hydrogen charged maraging stainless steel by Bestautte, Jolan, Kalácska, Szilvia, Béchet, Denis, Obadia, Zacharie, Christien, Frederic

“…Slow strain rate tests on hydrogen-containing specimens of PH13–8Mo maraging stainless steel showed H-assisted subcritical quasi-cleavage cracking,…”
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Ab initio investigation of phosphorus and hydrogen co-segregation and embrittlement in α-Fe twin boundaries by Schuler, Thomas, Christien, Frédéric, Ganster, Patrick, Wolski, Krzysztof

“…We propose a new statistical physics model to study equilibrium solute segregation at grain boundaries and the resulting embrittlement effect. This…”
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Hydrogen-enhanced intergranular failure of sulfur-doped nickel grain boundary: In situ electrochemical micro-cantilever bending vs. DFT by Hajilou, Tarlan, Taji, Iman, Christien, Frederic, He, Shuang, Scheiber, Daniel, Ecker, Werner, Pippan, Reinhard, Razumovskiy, Vsevolod I., Barnoush, Afrooz

“…Intergranular failure of nickel (Ni) single grain boundaries (GBs) owing to the segregation of sulfur (S), hydrogen (H), and their co-segregation has been…”
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Scanning Kelvin probe force microscopy study of the effect of thermal oxide layers on the hydrogen release - Experiments and finite element method modelling by Rubben, Tim, Depover, Tom, Verbeken, Kim, Revilla, Reynier I., Barnier, Vincent, Dreano, Alixe, Christien, Frédéric, De Graeve, Iris

“…Scanning Kelvin Probe Force Microscopy (SKPFM) was used to study the hydrogen diffusion through a surface designed for simultaneous mapping of multiple areas…”
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Graphite-Grafted Silicon Nanocomposite as a Negative Electrode for Lithium-Ion Batteries by Martin, Cédric, Alias, Mélanie, Christien, Frédéric, Crosnier, Olivier, Bélanger, Daniel, Brousse, Thierry

“…p‐Phenylenediamine is used to successively generate two aryl radicals that are required to link silicon nanoparticles to graphite flakes by a phenyl bridge and…”
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Influence of microstructure and manganese sulfides on corrosion resistance of selective laser melted 17-4 PH stainless steel in acidic chloride medium by Alnajjar, Michella, Christien, Frédéric, Barnier, Vincent, Bosch, Cédric, Wolski, Krzysztof, Fortes, A. Dominic, Telling, Mark

“…•The as-built SLM-ed 17-4 PH steel was ferritic in contrast to the martensitic wrought steel.•After re-austenization treatment the SLM-ed steel recovered the…”
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Negative Colossal Magnetoresistance Driven by Carrier Type in the Ferromagnetic Mott Insulator GaV4S8 by Janod, Etienne, Dorolti, Eugen, Corraze, Benoit, Guiot, Vincent, Salmon, Sabrina, Pop, Viorel, Christien, Frédéric, Cario, Laurent

“…We report here a study on the evolution of structural and electronic properties of the lacunar spinel compounds GaV4S8 with charge doping. In this…”
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In-situ neutron diffraction study of wrought and selective laser melted maraging stainless steels by Alnajjar, Michella, Christien, Frédéric, Bosch, Cédric, Wolski, Krzysztof, Fortes, A. Dominic, Telling, Mark

“…Bulk phase transformations and dislocation density were monitored in a maraging stainless steel on a bulk level using in-situ neutron diffraction up to…”
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Investigation of the dependence of phosphorus segregation on grain boundary structure in Fe-P-C alloy: сross comparison between Atom Probe Tomography and Auger Electron Spectroscopy by Akhatova, Alfiia, Christien, Frédéric, Barnier, Vincent, Radiguet, Bertrand, Cadel, Emmanuel, Cuvilly, Fabien, Pareige, Philippe

“…•AES and APT are qualitative but complementary techniques to measure intergranular segregations in iron-based model alloy.•Correlative TKD and APT techniques…”
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Finite element simulation of interfacial segregation in dilute alloys by FOURNIER DIT CHABERT, Florent, TANCRET, Franck, CHRISTIEN, Frédéric, LE GALL, René, CASTAGNE, Jean-Francois

“…The finite element software Comsol is used to simulate surface or grain boundary segregation in dilute alloys. The model computes simultaneously the evolution…”
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Solute interface segregation measurement: Cross comparison between four different analytical method by Hsu, Chih-Ying, Stodolna, J., Todeschini, P., Delabrouille, F., Barnier, Vincent, Radiguet, Bertrand, Christien, Frédéric

“…Phosphorus intergranular segregation is known to influence the fracture properties of steels by decreasing grain boundary cohesion and induce intergranular…”
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Ab initio investigation of phosphorus and hydrogen co-segregation and embrittlement in α-Fe twin boundaries by Schüler, Thomas, Christien, Frédéric, Ganster, Patrick, Wolski, Krzysztof

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Investigation of quasi-cleavage in a hydrogen charged maraging stainless steel by Bestautte, Jolan, Kalácska, Szilvia, Béchet, Denis, Obadia, Zacharie, Christien, Frederic

“…Slow strain rates tests (SSRT) were conducted on hydrogen-containing specimens of PH13-8Mo maraging stainless steel. Hydrogen-assisted subcritical…”
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A multi-method approach to the study of hydrogen trapping in a maraging stainless steel: the impact of B2-NiAl precipitates and austenite by Bestautte, J., Oudriss, A., Lenci, M., Bechet, D., Obadia, Z., Feaugas, X., Christien, F.

“…The trapping behavior of hydrogen in a Fe-Cr-Ni-Al-Mo alloy (PH13–8Mo martensitic stainless steel) was investigated. Three different metallurgical states of…”
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Bond Reliability Improvement at High Temperature by Pd Addition on Au Bonding Wires by Bahi, M.A., Lecuyer, P., Gentil, A., Fremont, H., Landesman, J.-P., Christien, F.

“…To extend the qualification domain to the biggest package size in the automotive environment at high temperature, it is necessary to improve the Au-Al bond…”
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Hydrogen diffusion and trapping in a steel containing porosities by Yaktiti, A., Dreano, A., Carton, J.F., Christien, F.

“…The effect of porosity on diffusion and trapping of hydrogen in a cast steel was studied using electrochemical permeation (EP) and thermal desorption…”
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