{"id":4532,"date":"2023-11-16T07:55:19","date_gmt":"2023-11-16T12:55:19","guid":{"rendered":"https:\/\/cqfa.quebec\/?p=4532"},"modified":"2023-11-16T08:02:26","modified_gmt":"2023-11-16T13:02:26","slug":"developpement-de-poudres-dacier-a-outils-s7-par-atomisation-a-leau-pour-la-fabrication-additive-par-fusion-laser-sur-lit-de-poudre-lpbf","status":"publish","type":"post","link":"https:\/\/cqfa.quebec\/en\/developpement-de-poudres-dacier-a-outils-s7-par-atomisation-a-leau-pour-la-fabrication-additive-par-fusion-laser-sur-lit-de-poudre-lpbf\/","title":{"rendered":"D\u00e9veloppement de poudres d\u2019acier \u00e0 outils S7 par atomisation \u00e0 l\u2019eau pour la fabrication additive par fusion laser sur lit de poudre (LPBF)"},"content":{"rendered":"<p><em><span class=\"TextRun SCXW27678472 BCX0\" lang=\"FR-CA\" xml:lang=\"FR-CA\" data-contrast=\"auto\"><span class=\"NormalTextRun SpellingErrorV2Themed SCXW27678472 BCX0\">Mutel<\/span><span class=\"NormalTextRun SCXW27678472 BCX0\">, D. (2023). <\/span><\/span><span class=\"TextRun SCXW27678472 BCX0\" lang=\"FR-CA\" xml:lang=\"FR-CA\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW27678472 BCX0\">D\u00e9veloppement de poudres d\u2019acier \u00e0 outils S7 par atomisation \u00e0 l\u2019eau pour la fabrication additive par fusion laser sur lit de poudre (LPBF). Thesis.<\/span><\/span><\/em><\/p>\n<p>&nbsp;<\/p>\n<p><span class=\"NormalTextRun SCXW45357896 BCX0\">Unlike subtractive manufacturing, additive manufacturing is a process for producing objects layer by layer. This process would make it possible to design new products with complex geometry that could not be manufactured using traditional processes. In <\/span><span class=\"NormalTextRun AdvancedProofingIssueV2Themed SCXW45357896 BCX0\">the majority of<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> cases, additive manufacturing requires powders with <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">very specific<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> properties <\/span><span class=\"NormalTextRun AdvancedProofingIssueV2Themed SCXW45357896 BCX0\">in order to<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> obtain parts with the desired mechanical properties. This is why gas atomization is the preferred process for producing powders. Indeed, this method makes it possible to obtain particles with a spherical morphology and exempt of oxide, <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">subsequently<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> conferring excellent rheological properties on the powders produced. On the other hand, from an economic point of view, the use of water atomization to produce ferrous alloys for laser powder bed fusion could be <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">very attractive<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> considering its much higher production rate and production costs significantly lower. This thesis investigates the use of S7 tool steel powder produced by water atomization for additive manufacturing by laser powder bed fusion. <\/span><span class=\"NormalTextRun AdvancedProofingIssueV2Themed SCXW45357896 BCX0\">In order to<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> be able to substitute gas atomization by water atomization, this thesis will <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">optimize<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> the water atomization process as well as the chemistry of the original alloys <\/span><span class=\"NormalTextRun AdvancedProofingIssueV2Themed SCXW45357896 BCX0\">in order to<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> maximize the particle sphericities (morphology) while minimizing the oxygen content. Thus, tool steel powders suitable for additive manufacturing could be produced at a fraction of the cost of those obtained by gas atomization. Moreover, to understand the relationship between powder flow and the morphological characteristics of individual particles, artificial intelligence is used as a tool to <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">establish<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> links between these properties. Micrographs of the powders produced were acquired by scanning electron microscopy to be <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">subsequently<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> segmented into individual particles. The micrographs of individual particles or their shape descriptors are then processed using artificial intelligence to corelate the information collected on individual particles with the rheological properties of powder specimens. Finally, to verify the suitability of using S7 tool steel powder produced by water atomization in laser powder bed fusion process, the powders produced by water atomization were used to produce parts and <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">determine<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> their mechanical properties such as tensile strength, <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">ductility<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> and impact toughness. This work <\/span><span class=\"NormalTextRun SCXW45357896 BCX0\">provides<\/span><span class=\"NormalTextRun SCXW45357896 BCX0\"> new knowledge on the relationships between the physical properties of powders and their rheological properties, but also on the feasibility of using water-atomized powders in additive manufacturing on a powder bed.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p class=\"link-btn-style btn-yellow\"><a href=\"https:\/\/corpus.ulaval.ca\/entities\/publication\/9d403460-cce9-4e19-90f3-246454f64f67\" target=\"_blank\" rel=\"noopener\">Read the publication<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mutel, D. (2023). D\u00e9veloppement de poudres d\u2019acier \u00e0 outils S7 par atomisation \u00e0 l\u2019eau pour la fabrication additive par fusion laser sur lit de poudre (LPBF). Thesis. &nbsp; Unlike subtractive [&hellip;]<\/p>\n","protected":false},"author":80,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-4532","post","type-post","status-publish","format-standard","hentry","category-publications-academiques-quebecoises"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>D\u00e9veloppement de poudres d\u2019acier \u00e0 outils S7 par atomisation \u00e0 l\u2019eau pour la fabrication additive par fusion laser sur lit de poudre (LPBF) - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cqfa.quebec\/en\/developpement-de-poudres-dacier-a-outils-s7-par-atomisation-a-leau-pour-la-fabrication-additive-par-fusion-laser-sur-lit-de-poudre-lpbf\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D\u00e9veloppement de poudres d\u2019acier \u00e0 outils S7 par atomisation \u00e0 l\u2019eau pour la fabrication additive par fusion laser sur lit de poudre (LPBF) - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\" \/>\n<meta property=\"og:description\" content=\"Mutel, D. (2023). D\u00e9veloppement de poudres d\u2019acier \u00e0 outils S7 par atomisation \u00e0 l\u2019eau pour la fabrication additive par fusion laser sur lit de poudre (LPBF). 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