| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Laffont, Lydia
Institutul Naţional al Patrimoniului
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2023Multi-scale characterization of the inner surface of as-received steam generator tubes and correlation with the Ni release in primary watercitations
- 2021Electrochemical impedance spectroscopy study of the passive film for laser-beam-melted 17-4PH stainless steelcitations
- 2021Flash Oxidation Tests to Evidence the Segregation of Boron at the Grain Boundaries of Superalloy Inconel 718citations
- 2021Comparative study of the microstructure between a laser beam melted 17-4PH stainless steel and its conventional counterpartcitations
- 2021Combined XPS / TEM study of the chemical composition and structure of the passive film formed on additive manufactured 17-4PH stainless steelcitations
- 2021Nickel‐Decorated Silver Nanowires for Polymer‐Based Magnetoelectric Compositecitations
- 2020Magnetoelectric coupling in PVDF/Nano NaNbO3/NanoNi composites: Influence of Ni particles aspect ratiocitations
- 2020Solid-State Phase Transformations Involving (Nb,Mo)2CrB2 Borides and (Nb,Ti)2CS Carbosulfides at the Grain Boundaries of Superalloy Inconel 718citations
- 2020(Invited) Analysis By Electrochemical Impedance Spectroscopy of Passive Film Properties of Additive Manufactured 17-4PH Stainless Steel
- 2020STEM observation of a multiphase nucleus of spheroidal graphitecitations
- 2020Pitting corrosion of 17-4PH stainless steel manufactured by laser beam meltingcitations
- 2019Fabrication of Nickel NanoChains/PVDF Nanocomposites and Their Electrical/Magnetic Propertiescitations
- 2019Electrical behavior of a graphene/PEKK and carbon black/PEKK nanocomposites in the vicinity of the percolation thresholdcitations
- 2019Influence of hydrogen on the propagation of intergranular corrosion defects in 2024 aluminium alloycitations
- 2019Growth of Spheroidal Graphite: Light Versus Scanning and Transmission Electron Microscopiescitations
- 2019Role of irradiation and irradiation defects on the oxidation first stages of a 316L austenitic stainless steelcitations
- 2018Effect of cooling rate and aluminium addition on graphite growth during solidification and graphitizationcitations
- 2018Effect of Cooling Rate and Aluminium Addition on Graphite Growth during Solidification and Graphitizationcitations
- 2018Crystallography of growth blocks in spheroidal graphitecitations
- 2017Characterization of intergranular corrosion defects in a 2024 T351 aluminium alloycitations
- 2013Metallization of polymer composites by metalorganic chemical vapor deposition of Cu: Surface functionalization driven films characteristicscitations
- 2012Effect of surface preparation on the corrosion of austenitic stainless steel 304L in high temperature steam and simulated PWR primary watercitations
- 2012Piezoelectric properties of polyamide 11/NaNbO 3 nanowire compositescitations
- 2012Microstructural Characterization of Graphite Spheroids in Ductile Ironcitations
- 2011Optical properties of metallic nanowires by valence electron energy loss spectroscopycitations
- 2010High resolution electron energy loss spectroscopy of manganese oxides: application to Mn3O4 nanoparticlescitations
- 2010Structural and electrical properties of gold nanowires/P(VDF-TrFE) nanocompositescitations
- 2009Influence of secondary phases during annealing on re-crystallization of CuInSe2 electrodeposited filmscitations
- 2008The one-electron cleavage and reductive homo-coupling of alkyl bromides at silver-palladium cathodes
- 2008Structural, microsctructural and transport properties study of lanthanum lithium titanium perovskite thin films gfrown by pulsed laser deposition
- 2006Improved cyclability by tungsten addition in electrochromic NiO thin filmscitations
- 2006Benefits of carbon addition on the hydrogen absorption properties of Mg-based thin films grown by pulsed laser deposition
- 2006A copper-palladium alloy usable as cathode material mode of formation and first examples of catalytic cleavages of carbon-halide bondscitations
- 2002Structure and physical properties of polyaromatic carbons by TEM, EELS, and XRD
Places of action
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article
Comparative study of the microstructure between a laser beam melted 17-4PH stainless steel and its conventional counterpart
Abstract
The aim of this work was to compare the microstructures of 17-4PH martensitic stainless steels (MSSs) obtained by conventional manufacturing (CM), and additive manufacturing (AM) using laser beam melting (LBM) process. Both materials were studied after the same H900 heat treatment. Significant differences in microstructure were observed between the two MSSs, with a higher austenite content for the AM-H900 sample, as compared to the CM-H900 sample. Transmission electron microscopy (TEM) analyses allowed to identify both retained and reversed austenite in the AM-H900 sample, but most part of the austenite detected was found to be reversed austenite. The high amount of reversed austenite in the AM-H900 sample was attributed to a heterogeneous distribution in austenite-stabilising elements in the solution heat treated AM sample, leading to a decrease in Ms value and subsequent increase in the driving force for the martensite to austenite transformation during the ageing at 480 °C. Moreover, TEM analyses highlighted thinner martensite laths for the AM-H900 steel as compared to the CM-H900 one. This was interpreted as an increase in both nucleation sites and growth rate for reversed austenite. Despite those differences in microstructure, the AM-H900 and CM-H900 samples showed similar tensile behaviour, with similar UTS and Rp0.2 values, but a decrease in the strain to fracture was observed for the AM-H900 sample, probably related to the pores and/or to intergranular carbides.