Zobrazeno 1 - 10 of 44 pro vyhledávání: '"Laurent Proville"'
1
Machine learning surrogate models for strain-dependent vibrational properties and migration rates of point defects
Autor: Clovis Lapointe, Thomas D. Swinburne, Laurent Proville, Charlotte S. Becquart, Normand Mousseau, Mihai-Cosmin Marinica
Publikováno v: Physical Review Materials
Physical Review Materials, 2022, Physical Review Materials, 6 (11), pp.113803. ⟨10.1103/physrevmaterials.6.113803⟩
International audience; Machine learning surrogate models employing atomic environment descriptors have found wide applicability in materials science. In our previous work, this approach yielded accurate and transferable predictions of the vibrationa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::347caf7fb2bc059876b39400cca5cee4
https://hal.univ-lille.fr/hal-03879650
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2
Atomic scale simulations for the diffusion-assisted crossing of dislocation anchored by vacancy clusters
Autor: Mihai-Cosmin Marinica, Maxime Sauzay, Marie Landeiro Dos Reis, Laurent Proville
Publikováno v: Physical Review Materials
Physical Review Materials, 2020, 4, pp.103603. ⟨10.1103/PhysRevMaterials.4.103603⟩
Physical Review Materials, American Physical Society, 2020, 4, pp.103603. ⟨10.1103/PhysRevMaterials.4.103603⟩
International audience; Nano-size vacancy clusters, characterized in metals after plastic deformation, irradiation or specific heat treatments are suspected to participate to materials hardening through their interactions with mobile dislocations. Ou
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9905f9ac140a5b86c83bdc4996e64d8
https://doi.org/10.1103/physrevmaterials.4.103603
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3
Interatomic potentials for irradiation-induced defects in iron
Autor: Laurent Proville, Charlotte Becquart, Mihai-Cosmin Marinica, Rebecca Alexander, Julien Dérès, Alexandra M. Goryeava, Clovis Lapointe
Publikováno v: Journal of Nuclear Materials
Journal of Nuclear Materials, Elsevier, In press, ⟨10.1016/j.jnucmat.2020.152141⟩
Journal of Nuclear Materials, In press, ⟨10.1016/j.jnucmat.2020.152141⟩
International audience; Empirical potentials using embedded atom method are developed for Fe, mainly to study irradiation-induced defects such as self-interstitial atom clusters or dislocation loops. The potentials are fitted using experimental value
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::429ecd3bad0eb60e9a77b5a6c6748dcb
https://hal.univ-lille.fr/hal-02541795
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4
Machine learning surrogate models for prediction of point defect vibrational entropy
Autor: Clovis Lapointe, Thomas D. Swinburne, Stéphane Mallat, Laurent Proville, Charlotte Becquart, Louis Thiry, Mihai-Cosmin Marinica
Publikováno v: Physical Review Materials
Physical Review Materials, 2020, 4 (6), pp.063802. ⟨10.1103/PhysRevMaterials.4.063802⟩
Physical Review Materials, 2020, 4 (6), ⟨10.1103/PhysRevMaterials.4.063802⟩
Physical Review Materials, American Physical Society, 2020, 4 (6), ⟨10.1103/PhysRevMaterials.4.063802⟩
International audience; The temperature variation of the defect densities in a crystal depends on vibrational entropy. This contribution to the system thermodynamics remains computationally challenging as it requires a diagonalisation of the system's
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bf7327ba2ec2d623abb945d6b7d34e9
https://cea.hal.science/cea-03775685
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5
Modeling the climb-assisted glide of edge dislocations through a random distribution of nanosized vacancy clusters
Autor: Laurent Proville, Maxime Sauzay, Marie Landeiro Dos Reis
Publikováno v: Physical Review Materials
Physical Review Materials, American Physical Society, 2018, 2, pp.093604. ⟨10.1103/PhysRevMaterials.2.093604⟩
Physical Review Materials, 2018, 2, pp.093604. ⟨10.1103/PhysRevMaterials.2.093604⟩
International audience; A multiscale model is developed to simulate the climb-assisted glide of edge dislocations anchored by a random distribution of nanosized vacancy clusters. Atomic-scale simulations allowed us to characterize the interactions be
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1337ff1a8e3efa9a468944a7b4f640a0
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7
Quantum de-trapping and transport of heavy defects in tungsten
Autor: Kimitaka Higuchi, Thomas D. Swinburne, Pui-Wai Ma, Kazuto Arakawa, Duc Nguyen-Manh, Alexandra Goryaeva, Tetsuya Yamada, Nobuo Tanaka, Yuta Yamamoto, Tetsuya Yasuda, Shigeo Arai, Takafumi Amino, Mihai-Cosmin Marinica, Laurent Proville, S. P. Fitzgerald, Hidehiro Yasuda, Sergei L. Dudarev, Hirotaro Mori
Publikováno v: Nature Materials
Nature Materials, Nature Publishing Group, 2020, ⟨10.1038/s41563-019-0584-0⟩
Nature Materials, 2020, ⟨10.1038/s41563-019-0584-0⟩
The diffusion of defects in crystalline materials1 controls macroscopic behaviour of a wide range of processes, including alloying, precipitation, phase transformation and creep2. In real materials, intrinsic defects are unavoidably bound to static t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::315e6ce288c6bef6c624b93787d79cae
https://pubmed.ncbi.nlm.nih.gov/31988514
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8
Ubiquity of quantum zero point fluctuations in dislocations glide
Autor: Marie Landeiro Dos Reis, Laurent Proville, Anshuman Choudhury
Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2017, 95, pp.094103. ⟨10.1103/PhysRevB.95.094103⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 95, pp.094103. ⟨10.1103/PhysRevB.95.094103⟩
International audience; Modeling the dislocations glide through atomic scale simulations in Al, Cu and Ni and in solid solution alloys Al(Mg) and Cu(Ag), we show that in the course of the plastic deformation the variation of the crystals zero point e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd5f7f854f0991d0da0096d6d5253436
https://hal-cea.archives-ouvertes.fr/cea-02418720/document
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9
Dislocation depinning from ordered nanophases in a model fcc crystal: From cutting mechanism to Orowan looping
Autor: Laurent Proville, Botond Bakó
Publikováno v: Acta Materialia. 58:5565-5571
Based on the embedded atom method we have studied dislocation bypassing of nanophases in a model for face-centered cubic (fcc) alloys. A system in which either a purely screw or a purely edge dislocation crosses Ni3Al nanophases with L12 order in a N
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0294d0cbb2a80ecaa7cb5919c4a8ff64
https://doi.org/10.1016/j.actamat.2010.06.018
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10
Depinning of a Discrete Elastic String from a Random Array of Weak Pinning Points with Finite Dimensions
Autor: Laurent Proville
Publikováno v: Journal of Statistical Physics. 137:717-727
In possible connection with dislocation pinning by foreign atoms in alloys and vortex pinning in type II superconductors, we compute the external force required to drag an elastic string along a discrete two-dimensional random array with finite dimen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f410254d155c3658893e0f2a76f9fe0
https://doi.org/10.1007/s10955-009-9860-8
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