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Edouard de Sonis, doctorant au Centre des Matériaux de Mines Paris – PSL, s’est distingué en recevant le 2e Prix BODYCOTE-SF2M 2024 pour ses travaux sur les relations entre la microstructure et le comportement à rupture des aciers 316L fabriqués par impression métallique 3D. Sa recherche, récompensée lors des Journées Annuelles de la SF2M au CNAM-Paris, ouvre la voie à des innovations prometteuses dans le domaine de la fabrication additive." /> <link rel="canonical" href="https://www.minesparis.psl.eu/actualites/edouard-de-sonis-doctorant-au-centre-des-materiaux-de-mines-paris-psl-laureat-du-2e-prix-bodycote-sf2m-2024-une-these-a-la-croisee-de-la-metallurgie-et-des-procedes-innovants/" /> <meta property="og:locale" content="fr_FR" /> <meta property="og:locale:alternate" content="en_GB" /> <meta property="og:type" content="article" /> <meta property="og:title" content="Trois questions à Edouard de Sonis, doctorant au Centre des Matériaux de Mines Paris – PSL, lauréat du 2e Prix BODYCOTE-SF2M 2024 : une thèse à la croisée de la métallurgie et des procédés innovants - MINES PARIS - PSL" /> <meta property="og:description" content="Le 15 mars dernier, la Commission des Prix et Médailles de la Société Française de Métallurgie et de Matériaux (SF2M) a désigné les lauréats des prix 2024. Edouard de Sonis, doctorant au Centre des Matériaux de Mines Paris – PSL, s’est distingué en recevant le 2e Prix BODYCOTE-SF2M 2024 pour ses travaux sur les relations entre la microstructure et le comportement à rupture des aciers 316L fabriqués par impression métallique 3D. Sa recherche, récompensée lors des Journées Annuelles de la SF2M au CNAM-Paris, ouvre la voie à des innovations prometteuses dans le domaine de la fabrication additive." /> <meta property="og:url" content="https://www.minesparis.psl.eu/actualites/edouard-de-sonis-doctorant-au-centre-des-materiaux-de-mines-paris-psl-laureat-du-2e-prix-bodycote-sf2m-2024-une-these-a-la-croisee-de-la-metallurgie-et-des-procedes-innovants/" /> <meta property="og:site_name" content="MINES PARIS - PSL" /> <meta property="article:publisher" content="https://www.facebook.com/MinesParisPSL" /> <meta property="article:modified_time" content="2024-11-21T15:31:50+00:00" /> <meta property="og:image" content="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/IMG_5425-scaled.jpg" /> <meta property="og:image:width" content="2560" /> <meta property="og:image:height" content="1607" /> <meta property="og:image:type" content="image/jpeg" /> <meta name="twitter:card" content="summary_large_image" /> <meta name="twitter:site" content="@Mines_Paris" /> <meta name="twitter:label1" content="Durée de lecture estimée" /> <meta name="twitter:data1" content="1 minute" /> <script type="application/ld+json" class="yoast-schema-graph">{"@context":"https://schema.org","@graph":[{"@type":"WebPage","@id":"https://www.minesparis.psl.eu/actualites/edouard-de-sonis-doctorant-au-centre-des-materiaux-de-mines-paris-psl-laureat-du-2e-prix-bodycote-sf2m-2024-une-these-a-la-croisee-de-la-metallurgie-et-des-procedes-innovants/","url":"https://www.minesparis.psl.eu/actualites/edouard-de-sonis-doctorant-au-centre-des-materiaux-de-mines-paris-psl-laureat-du-2e-prix-bodycote-sf2m-2024-une-these-a-la-croisee-de-la-metallurgie-et-des-procedes-innovants/","name":"Trois questions à Edouard de Sonis, doctorant au Centre des Matériaux de Mines Paris – PSL, lauréat du 2e Prix BODYCOTE-SF2M 2024 : une thèse à la croisée de la métallurgie et des procédés innovants - MINES PARIS - PSL","isPartOf":{"@id":"https://www.minesparis.psl.eu/#website"},"primaryImageOfPage":{"@id":"https://www.minesparis.psl.eu/actualites/edouard-de-sonis-doctorant-au-centre-des-materiaux-de-mines-paris-psl-laureat-du-2e-prix-bodycote-sf2m-2024-une-these-a-la-croisee-de-la-metallurgie-et-des-procedes-innovants/#primaryimage"},"image":{"@id":"https://www.minesparis.psl.eu/actualites/edouard-de-sonis-doctorant-au-centre-des-materiaux-de-mines-paris-psl-laureat-du-2e-prix-bodycote-sf2m-2024-une-these-a-la-croisee-de-la-metallurgie-et-des-procedes-innovants/#primaryimage"},"thumbnailUrl":"https://www.minesparis.psl.eu/wp-content/uploads/2024/11/IMG_5425-scaled.jpg","datePublished":"2024-11-21T14:00:09+00:00","dateModified":"2024-11-21T15:31:50+00:00","description":"Le 15 mars dernier, la Commission des Prix et Médailles de la Société Française de Métallurgie et de Matériaux (SF2M) a désigné les lauréats des prix 2024. 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https://www.minesparis.psl.eu/wp-content/uploads/2024/11/IMG_5425-1536x964.jpg 1536w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/IMG_5425-2048x1286.jpg 2048w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/IMG_5425-1300x816.jpg 1300w" sizes="(max-width: 1024px) 100vw, 1024px" /> </div> <div class="description"> <p style="text-align: center;"><strong><em>Le 15 mars dernier, la Commission des Prix et Médailles de la Société Française de Métallurgie et de Matériaux (SF2M) a désigné les lauréats des prix 2024. Edouard de Sonis, doctorant au Centre des Matériaux de Mines Paris – PSL, s’est distingué en recevant le 2e Prix BODYCOTE-SF2M 2024 pour ses travaux sur les relations entre la microstructure et le comportement à rupture des aciers 316L fabriqués par impression métallique 3D. Sa recherche, récompensée lors des Journées Annuelles de la SF2M au CNAM-Paris, ouvre la voie à des innovations prometteuses dans le domaine de la fabrication additive.</em></strong></p> </div> </div> </div> </div> </div> </div> <div class="page-blocks actu-block "> <div class="container"> <div class="row mt-4"> <div class="col-md-12"> <p style="text-align: justify;">Le 16 janvier 2024, Edouard de Sonis, doctorant au Centre des Matériaux de Mines Paris – PSL, a soutenu une thèse de doctorat portant sur l’“Étude des relations microstructure – comportement à rupture d’aciers 316L élaborés par procédés LPBF et WAAM.” Ces deux procédés de fabrication additive, LPBF (Laser Powder Bed Fusion) et WAAM (Wire Arc Additive Manufacturing), représentent des avancées majeures dans le domaine de la métallurgie et de la fabrication industrielle. Les travaux d’Edouard de Sonis explorent en profondeur comment la microstructure des aciers 316L, modifiée par ces procédés, influence leur comportement mécanique, en particulier leur résistance à la rupture.</p><br /> <p style="text-align: justify;">Lors de la cérémonie des Journées Annuelles de la SF2M, tenue le 18 novembre 2024 au CNAM-Paris, Edouard de Sonis a reçu le 2e Prix BODYCOTE 2024, décerné par la SF2M. Il vient couronner l’originalité et l’impact de cette recherche, qui pourrait avoir des répercussions significatives sur l’industrie, notamment dans les secteurs de l’énergie décarbonée, où les aciers 316L sont largement utilisés pour leurs propriétés mécaniques et de résistance à la corrosion. L’application visée ? Sécuriser les filières de (re)fabrication de pièces pour la prolongation de la durée de vie des centrales nucléaires actuelles, ainsi que les méthodologies de certification correspondantes.</p><br /> <p style="text-align: justify;">Ce prix met en lumière l’importance croissante des procédés de fabrication additive dans le développement de matériaux aux propriétés mécaniques optimisées et de méthodologies de dimensionnement adaptées à ces nouvelles métallurgies.</p><br /> <p style="text-align: justify;"><strong> </strong></p><br /> <h2 style="text-align: justify;">3 questions à Edouard de Sonis :</h2><br /> <p><img decoding="async" class=" wp-image-17441 aligncenter" src="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/photoCV-002-300x284.jpg" alt="" width="247" height="234" srcset="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/photoCV-002-300x284.jpg 300w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/photoCV-002.jpg 308w" sizes="(max-width: 247px) 100vw, 247px" /></p><br /> <h4><span style="color: #015d9e;">Qu’est-ce qui vous a poussé à choisir les aciers 316L et les procédés LPBF et WAAM pour votre recherche ?</span></h4><br /> <p style="text-align: justify;"><em>L’intérêt du projet de recherche dont faisait partie ma thèse était d’étudier l’influence des procédés de fabrication additive sur la microstructure et le comportement mécanique de certains des matériaux présents dans les réacteurs nucléaires actuellement en service. Parmi ces matériaux, l’acier 316L est abondamment utilisé pour de nombreux composants de petites tailles (corps de vannes, filtres…).</em></p><br /> <p style="text-align: justify;"><em>Concernant les deux procédés étudiés, l’intérêt résidait dans leur différence d’échelle, tant au niveau des microstructures obtenues qu’à celui des pièces fabriquées. En effet, le procédé LPBF vise généralement à la fabrication de pièces de quelques centimètres alors qu’avec le procédé WAAM, l’élaboration de pièces de plusieurs mètres est envisageable. De même, les tailles caractéristiques des microstructures obtenues par WAAM sont (en tout cas pour l’acier 316L) d’environ un ordre de grandeur supérieures à celles des microstructures obtenues par LPBF. Les autres procédés de fabrication additive métalliques (DED, WLAM…) se situent quant à eux à des échelles intermédiaires. L’étude combinée de ces deux procédés « extrêmes » a donc permis d’esquisser une vision globale des microstructures d’acier 316L qu’il est possible d’obtenir par fabrication additive et de leur comportement à rupture.</em></p><br /> <p><img decoding="async" class=" wp-image-17440 aligncenter" src="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/TraitementThermique-225x300.jpg" alt="" width="328" height="437" srcset="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/TraitementThermique-225x300.jpg 225w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/TraitementThermique-768x1024.jpg 768w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/TraitementThermique-1152x1536.jpg 1152w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/TraitementThermique-1536x2048.jpg 1536w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/TraitementThermique-1300x1733.jpg 1300w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/TraitementThermique-scaled.jpg 1920w" sizes="(max-width: 328px) 100vw, 328px" /></p><br /> <p style="text-align: center;"><em>Illustration de traitements thermiques réalisé sur l’acier 316L LPBF et WAAM</em></p><br /> <h4><span style="color: #015d9e;">Quels ont été les principaux défis techniques rencontrés au cours de vos travaux sur la relation entre la microstructure et la rupture des aciers ?</span></h4><br /> <p style="text-align: justify;"><em>Un des principaux défis techniques a été d’abord l’obtention de matériaux exempts de porosité, ce qui n’est rendu possible que par l’optimisation et la maîtrise des paramètres de fabrication.</em></p><br /> <p style="text-align: justify;"><em>Un autre défi concernait l’aspect normatif des essais mécaniques, notamment des essais de propagation de fissure. En effet, il est apparu que les résultats obtenus pouvaient varier de manière significative en fonction de la norme d’essai utilisée (ISO ou ASTM). Il a donc été nécessaire de mener une réflexion sur l’utilisation de ces normes afin de déterminer laquelle s’appliquait le mieux aux matériaux étudiés.</em></p><br /> <p><img decoding="async" class=" wp-image-17439 aligncenter" src="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/fissureLPBF-225x300.jpg" alt="" width="324" height="432" srcset="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/fissureLPBF-225x300.jpg 225w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/fissureLPBF-768x1025.jpg 768w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/fissureLPBF-1151x1536.jpg 1151w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/fissureLPBF.jpg 1185w" sizes="(max-width: 324px) 100vw, 324px" /></p><br /> <p style="text-align: center;"><em>Une fissure se propageant dans une acier 316L LPBF</em></p><br /> <h4>Comment vos résultats pourraient-ils influencer les applications industrielles des aciers 316L dans les années à venir ?</h4><br /> <p style="text-align: justify;"><em>Mon travail de thèse a permis une meilleure compréhension du comportement à rupture de l’acier 316L élaboré par les procédés LPBF et WAAM. Par ailleurs, il a pu être montré que, si ces matériaux présentaient une résistance à la propagation de fissure inférieure à celle de l’acier 316L forgé, certains critères des normes imposées par l’industrie nucléaire ont été satisfaits dans la majorité des cas microstructuraux étudiés. Cela ouvre donc la voie à la qualification et à l’utilisation potentielle de pièces en acier 316L élaborées par LPBF et WAAM dans des réacteurs en service.</em></p><br /> </div> </div> </div> <div class="container"> <div class="row mt-4"> <div class="col-md-6"> <p><img decoding="async" class="wp-image-17438 alignright" src="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/CubesLPBF-300x225.jpg" alt="" width="328" height="246" srcset="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/CubesLPBF-300x225.jpg 300w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/CubesLPBF-1024x768.jpg 1024w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/CubesLPBF-768x576.jpg 768w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/CubesLPBF-1536x1152.jpg 1536w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/CubesLPBF-2048x1536.jpg 2048w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/CubesLPBF-1300x975.jpg 1300w" sizes="(max-width: 328px) 100vw, 328px" /></p> <p> </p> </div> <div class="col-md-6"> <p><img decoding="async" class="size-medium wp-image-17437 alignleft" src="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/BlocWAAM-225x300.jpg" alt="" width="225" height="300" srcset="https://www.minesparis.psl.eu/wp-content/uploads/2024/11/BlocWAAM-225x300.jpg 225w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/BlocWAAM-768x1024.jpg 768w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/BlocWAAM-1152x1536.jpg 1152w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/BlocWAAM-1536x2048.jpg 1536w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/BlocWAAM-1300x1733.jpg 1300w, https://www.minesparis.psl.eu/wp-content/uploads/2024/11/BlocWAAM-scaled.jpg 1920w" sizes="(max-width: 225px) 100vw, 225px" /></p> </div> </div> </div> <div class="container"> <div class="row mt-4"> <div class="col-md-12"> <p style="text-align: center;"><em>Exemples des matériaux fabriqués par LPBF et WAAM</em></p><br /> 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Le fait de ne pas consentir ou de retirer son consentement peut avoir un effet négatif sur certaines caractéristiques et fonctions.</div>  <div class="cmplz-categories"> <details class="cmplz-category cmplz-functional" > <summary> <span class="cmplz-category-header"> <span class="cmplz-category-title">Fonctionnel</span> <span class='cmplz-always-active'> <span class="cmplz-banner-checkbox"> <input type="checkbox" id="cmplz-functional-optin" data-category="cmplz_functional" class="cmplz-consent-checkbox cmplz-functional" size="40" value="1"/> <label class="cmplz-label" for="cmplz-functional-optin" tabindex="0"><span class="screen-reader-text">Fonctionnel</span></label> </span> Toujours activé </span> <span class="cmplz-icon cmplz-open"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" height="18" ><path d="M224 416c-8.188 0-16.38-3.125-22.62-9.375l-192-192c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L224 338.8l169.4-169.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-192 192C240.4 412.9 232.2 416 224 416z"/></svg> </span> </span> </summary> <div class="cmplz-description"> <span class="cmplz-description-functional">Le stockage ou l’accès technique est strictement nécessaire dans la finalité d’intérêt légitime de permettre l’utilisation d’un service spécifique explicitement demandé par l’abonné ou l’internaute, ou dans le seul but d’effectuer la transmission d’une communication sur un réseau de communications électroniques.</span> </div> </details> <details class="cmplz-category cmplz-preferences" > <summary> <span class="cmplz-category-header"> <span class="cmplz-category-title">Préférences</span> <span class="cmplz-banner-checkbox"> <input type="checkbox" id="cmplz-preferences-optin" data-category="cmplz_preferences" class="cmplz-consent-checkbox cmplz-preferences" size="40" value="1"/> <label class="cmplz-label" for="cmplz-preferences-optin" tabindex="0"><span class="screen-reader-text">Préférences</span></label> </span> <span class="cmplz-icon cmplz-open"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" height="18" ><path d="M224 416c-8.188 0-16.38-3.125-22.62-9.375l-192-192c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L224 338.8l169.4-169.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-192 192C240.4 412.9 232.2 416 224 416z"/></svg> </span> </span> </summary> <div class="cmplz-description"> <span class="cmplz-description-preferences">Le stockage ou l’accès technique est nécessaire dans la finalité d’intérêt légitime de stocker des préférences qui ne sont pas demandées par l’abonné ou la personne utilisant le service.</span> </div> </details> <details class="cmplz-category cmplz-statistics" > <summary> <span class="cmplz-category-header"> <span class="cmplz-category-title">Statistiques</span> <span class="cmplz-banner-checkbox"> <input type="checkbox" id="cmplz-statistics-optin" data-category="cmplz_statistics" class="cmplz-consent-checkbox cmplz-statistics" size="40" value="1"/> <label class="cmplz-label" for="cmplz-statistics-optin" tabindex="0"><span class="screen-reader-text">Statistiques</span></label> </span> <span class="cmplz-icon cmplz-open"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" height="18" ><path d="M224 416c-8.188 0-16.38-3.125-22.62-9.375l-192-192c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L224 338.8l169.4-169.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-192 192C240.4 412.9 232.2 416 224 416z"/></svg> </span> </span> </summary> <div class="cmplz-description"> <span class="cmplz-description-statistics">Le stockage ou l’accès technique qui est utilisé exclusivement à des fins statistiques.</span> <span class="cmplz-description-statistics-anonymous">Le stockage ou l’accès technique qui est utilisé exclusivement dans des finalités statistiques anonymes. En l’absence d’une assignation à comparaître, d’une conformité volontaire de la part de votre fournisseur d’accès à internet ou d’enregistrements supplémentaires provenant d’une tierce partie, les informations stockées ou extraites à cette seule fin ne peuvent généralement pas être utilisées pour vous identifier.</span> </div> </details> <details class="cmplz-category cmplz-marketing" > <summary> <span class="cmplz-category-header"> <span class="cmplz-category-title">Marketing</span> <span class="cmplz-banner-checkbox"> <input type="checkbox" id="cmplz-marketing-optin" data-category="cmplz_marketing" class="cmplz-consent-checkbox cmplz-marketing" size="40" value="1"/> <label class="cmplz-label" for="cmplz-marketing-optin" tabindex="0"><span class="screen-reader-text">Marketing</span></label> </span> <span class="cmplz-icon cmplz-open"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" height="18" ><path d="M224 416c-8.188 0-16.38-3.125-22.62-9.375l-192-192c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L224 338.8l169.4-169.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-192 192C240.4 412.9 232.2 416 224 416z"/></svg> </span> </span> </summary> <div class="cmplz-description"> <span class="cmplz-description-marketing">Le stockage ou l’accès technique est nécessaire pour créer des profils d’internautes afin d’envoyer des publicités, ou pour suivre l’internaute sur un site web ou sur plusieurs sites web ayant des finalités marketing similaires.</span> </div> </details> </div> </div> <div class="cmplz-links cmplz-information"> <a class="cmplz-link cmplz-manage-options cookie-statement" href="#" data-relative_url="#cmplz-manage-consent-container">Gérer les options</a> <a class="cmplz-link cmplz-manage-third-parties cookie-statement" href="#" data-relative_url="#cmplz-cookies-overview">Gérer les services</a> <a class="cmplz-link cmplz-manage-vendors tcf cookie-statement" href="#" 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