{"id":5155,"date":"2024-07-11T06:06:33","date_gmt":"2024-07-11T11:06:33","guid":{"rendered":"https:\/\/cqfa.quebec\/?p=5155"},"modified":"2024-07-11T06:11:02","modified_gmt":"2024-07-11T11:11:02","slug":"laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties","status":"publish","type":"post","link":"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/","title":{"rendered":"Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties"},"content":{"rendered":"<p><em>Atabay, S.E.; Sarafan, S.; Islam, A.; Bernier, F.; Gholipour, J.; Amos, R.; Wanjara, P.; Borchu, M. (2024). Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties. High Entropy Alloys &amp; Materials. 2024, vol. 2 (129-173).<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Equiatomic CoCrFeMnNi high entropy alloy (HEA) powder was processed by laser powder bed fusion (LPBF) additive manufacturing (AM). The properties of the spherical pre-alloyed CoCrFeMnNi powder were characterized and its processability using LPBF AM was systematically investigated through the volumetric energy density (VED) based on the surface roughness, defects (micro-cracks and porosity) and densification. After optimization, LPBF processing at a VED of 104\u00a0J\/mm<sup>3<\/sup>\u00a0achieved highly dense and crack-free vertical and horizontal test specimens with a porosity fraction lower than 0.01% and micro-pores having a mean size of, respectively, 25.9\u00a0\u03bcm and 13.4\u00a0\u03bcm, as determined from X-ray micro-computed tomography (\u03bcCT) inspection. Scanning electron microscope (SEM) analysis of the as-built (AB) CoCrFeMnNi processed at a VED of 104\u00a0J\/mm<sup>3<\/sup>\u00a0showed a heterogeneous solidification microstructure, consisting of columnar grains with a cellular subgrain structure, and electron backscattered diffraction (EBSD) revealed a crystallographic texture mainly along the\u2009&lt;\u2009100\u2009&gt;\u2009direction. Post treatment with hot isostatic pressing (HIP) was effective in closing the remnant micro-pores in the bulk volume of the AB CoCrFeMnNi. Also, the cellular sub-grain structure in the AB CoCrFeMnNi completely disappeared after HIP and the resulting microstructure consisted of recrystallized equiaxed grains with annealing twins. Mechanical tests were then carried out.<\/p>\n<p>&nbsp;<\/p>\n<p class=\"link-btn-style btn-yellow\"><a href=\"https:\/\/link.springer.com\/article\/10.1007\/s44210-024-00035-1\" target=\"_blank\" rel=\"noopener\">Read the publication<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Atabay, S.E.; Sarafan, S.; Islam, A.; Bernier, F.; Gholipour, J.; Amos, R.; Wanjara, P.; Borchu, M. (2024). Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and [&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-5155","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>Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties - 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\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\" \/>\n<meta property=\"og:description\" content=\"Atabay, S.E.; Sarafan, S.; Islam, A.; Bernier, F.; Gholipour, J.; Amos, R.; Wanjara, P.; Borchu, M. 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Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/\" \/>\n<meta property=\"og:site_name\" content=\"CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\" \/>\n<meta property=\"article:published_time\" content=\"2024-07-11T11:06:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-07-11T11:11:02+00:00\" \/>\n<meta name=\"author\" content=\"f.charreteur\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"f.charreteur\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/\",\"url\":\"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/\",\"name\":\"Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\",\"isPartOf\":{\"@id\":\"https:\/\/cqfa.quebec\/en\/#website\"},\"datePublished\":\"2024-07-11T11:06:33+00:00\",\"dateModified\":\"2024-07-11T11:11:02+00:00\",\"author\":{\"@id\":\"https:\/\/cqfa.quebec\/en\/#\/schema\/person\/1471d3e52124b5db8e382db2fe9fd129\"},\"breadcrumb\":{\"@id\":\"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/cqfa.quebec\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cqfa.quebec\/en\/#website\",\"url\":\"https:\/\/cqfa.quebec\/en\/\",\"name\":\"CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\",\"description\":\"site du CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/cqfa.quebec\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/cqfa.quebec\/en\/#\/schema\/person\/1471d3e52124b5db8e382db2fe9fd129\",\"name\":\"f.charreteur\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/cqfa.quebec\/en\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/9363954600b2451cee337a467f183d3578e177b3c8101e36f7dfcb5adaa93ea5?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/9363954600b2451cee337a467f183d3578e177b3c8101e36f7dfcb5adaa93ea5?s=96&d=mm&r=g\",\"caption\":\"f.charreteur\"},\"url\":\"https:\/\/cqfa.quebec\/en\/author\/f-charreteur\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-printing-of-cocrfemnni-high-entropy-alloy-processing-microstructure-and-mechanical-properties\/","og_locale":"en_US","og_type":"article","og_title":"Laser Powder Bed Fusion Printing of CoCrFeMnNi High Entropy Alloy: Processing, Microstructure, and Mechanical Properties - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive","og_description":"Atabay, S.E.; Sarafan, S.; Islam, A.; Bernier, F.; Gholipour, J.; Amos, R.; Wanjara, P.; Borchu, M. 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