diffraction in-situ de neutrons
Comportement mécanique du titane en plasticité : diffraction des neutrons et modèle de transitions d'échelles
... mesures in situ de déformations intergranulaires par diffraction des neutrons lors d’essais de compression uniaxiales à température ambiante jusqu’à un taux de déformation totale de -8 % en ...
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Time-Resolved In Situ Neutron Diffraction Study of Cu22Fe8Ge4S32 Germanite: A Guide for the Synthesis of Complex Chalcogenides
... mechanisms. In spite of the clear advantages of neutrons compared to X-rays ...detection, in situ neutron diffraction was never used, to the best of our knowledge, to characterize ...
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Pépite | Sélectivité et piégeage de mélanges gazeux dans des hydrates de gaz en présence d'impuretés : étude par spectroscopie vibrationnelle et diffraction des neutrons
... analysés in situ par la sonde Cassini, ils sont composés principalement de particules de glace d’eau et de vapeur d’eau, mais aussi de certains gaz tels que le dioxyde de carbone, l’azote et l’ammoniac [WAI ...
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Ex situ measurement of strain associated with hot tearing in AZ91D and AE42 magnesium alloys using neutron diffraction
... de neutrons, re´ve`le que dans le cas de l’alliage AZ91D, une de´formation sous traction de *0,05 % est associe´e au de´but du dommage plastique et de la fissuration a` chaud, alors que pour l’alliage AE42, la ...
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Advances in martensitic transformations in Cu-based shape memory alloys achieved by in situ neutron and synchrotron X-ray diffraction methods
... of in situ neutron diffraction measurements on polycrystalline SMAs: a) the specimen (gauge volume ∼ cm 3 ) is loaded mechanically inside the neutron ...detectors in two geometric ...
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Characterization of hypereutectic Al-19% Si alloy solidification process using in-situ neutron diffraction and thermal analysis techniques
... neutron diffraction and thermal analysis ...advancements in hardware and software development [9] allow for better control of solidification parameters, including a wide range of solidification and melting ...
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Caractérisation multiéchelle par diffraction de neutrons et rayonnement synchrotron de la transformation martensitique sous contrainte dans un alliage à mémoire de forme CuAlBe
... déformation in-situ dans l’austénite et la martensite d’un polycristal de NiTi a/ en fonction de la déformation macroscopique,b/ en fonction de la contrainte macroscopique ...par diffraction, ...de ...
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Carbon content evolution in austenite during austenitization studied by in situ synchrotron X-ray diffraction of a hypoeutectoid steel
... differences in final microstructure with different local mechani- cal ...reported in literature have been carried out on the austenitization of steels with ini- tial ferrite-pearlite microstructure [4–14] ...
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Advances in martensitic transformations in Cu-based shape memory alloys achieved by in situ neutron and synchrotron X-ray diffraction methods
... [6–8]. In the literature, the peak profile widths of deformed metals are commonly associated with internal stresses inside polycrystalline grains and related dislocation ...already in the elastic range and ...
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Study of texture evolution during channel-die compression of Mg-Al alloys by in-situ neutron diffraction
... changes in texture. Basal slip results in the basal poles aligning themselves with the compression/extrusion ...results in an 86.4° reorientation of the crystal lattice, which would result in ...
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A new null matrix electrochemical cell for Rietveld refinements of in-situ or operando neutron powder diffraction data
... operando diffraction patterns was also performed, involving all the recorded ...patterns. In this case the structural parameters were fixed and only scale factors were permitted to ...given in figure ...
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In situ synchrotron X-ray diffraction study of strain induced crystallisation of natural rubber during fatigue tests
... X-ray diffraction measurements (from a few seconds to an ...succeeded in measuring SIC during fatigue using a stroboscopic technique to accumulate the weak intensity of the diffracted beam over several ...
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In situ laboratory X-ray powder diffraction study of wollastonite carbonation using a high-pressure stage
... resolution electron microscopy, but it could not determine whether it forms an effective barrier against leaching. This question could be answered by supplying excess water and preventing sample drying by studying a ...
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Radiobiologie avec des neutrons rapides
... DES NEUTRONS RAPIDES ...de neutrons avaient un pouvoir tumoricide important, à condition que le débit de dose soit très ...de neutrons et du rôle du débit de ...de neutrons (Dionet et ...de ...
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In situ powder x-ray diffraction, synthesis, and magnetic properties of the defect zircon structure ScVO4−x
... °C in Figure 2 support this additional oxygen uptake during the final reaction ...heating in the TGA/DTA experiment while a narrow temperature range is observed for slow heating during the in ...
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Diffraction peaks restoration and extraction in energy dispersive X-ray diffraction
... possible in the setup (e.g. as in security screening) or when crystalline structure is dynamically changing (to monitor the change of lattice parameters with pressure or temperature), one must use Energy ...
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Des neutrons pour faire des images dans le RJH
... HAL Id: cea-02338706 https://hal-cea.archives-ouvertes.fr/cea-02338706 Submitted on 24 Feb 2020 HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, ...
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Étalonnage, Dosimétrie photons et neutrons
... 2 O qui fournit un champ neutronique avec un spectre modéré. Le principal problème rencontré lors de l’étalonnage d’appareil vient de la diffusion des neutrons sur le sol en béton. Ainsi, la contribution à la ...
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Etoiles à neutrons et ondes gravitationnelles
... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...
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Strains, stresses and elastic properties in polycrystalline metallic thin films: in situ deformation combined with x-ray diffraction and simulation experiments
... state in the ...2) in order to calibrate precisely the geometry of the experiment ...measurement in our laboratory using a standard 4-circles Seifert diffractometer working with Cu Kα, the total ...
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