{"id":5242,"date":"2024-09-10T09:44:53","date_gmt":"2024-09-10T14:44:53","guid":{"rendered":"https:\/\/cqfa.quebec\/?p=5242"},"modified":"2024-09-10T09:48:56","modified_gmt":"2024-09-10T14:48:56","slug":"laser-powder-bed-fusion-of-superelastic-ti-ni-lattice-structures-process-design-and-testing","status":"publish","type":"post","link":"https:\/\/cqfa.quebec\/en\/laser-powder-bed-fusion-of-superelastic-ti-ni-lattice-structures-process-design-and-testing\/","title":{"rendered":"Laser Powder Bed Fusion of Superelastic Ti-Ni Lattice Structures: Process Design and Testing"},"content":{"rendered":"<p><em>Timercan, A.; Campion, D.; Terriault, P.; Brailovski, V. (2024). Laser Powder Bed Fusion of Superelastic Ti-Ni Lattice Structures: Process Design and Testing. J. Manuf. Mater. Process. 2024, 8(4), 176.<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Laser powder bed fusion allows the production of complex geometries and eases the shaping of difficult-to-transform materials, such as near-equiatomic Ti-Ni shape memory alloys. In this study, a numerical model was used to select 11 sets of printing parameters with different volumetric energy densities (VEDs) and build rates (BRs) to produce bulk Ti-50.26at%Ni alloy specimens. The manufactured specimens were studied in terms of their structural integrity, printed density, chemical composition, transformation temperatures, and crystalline phases. At high VEDs and low BRs, a significant decrease in the nickel content was observed. VED = 90 J\/mm<sup>3<\/sup>\u00a0and BR = 10 cm<sup>3<\/sup>\/h yielded a printed density of 99.94% and an austenite finish temperature of Af = 26.3 \u00b0C. The same printing conditions were used to produce 60% porous diamond and gyroid lattice structures. After heat treatment at 500 \u00b0C for 30 min, the diamond lattices manifested larger apparent recovery strains (7 vs. 6%), higher compliance (2.9 vs. 3.4 GPa), and similar yield stresses (~48 MPa) compared to their gyroid equivalents. The numerical model predicted that at an equivalent apparent compression strain of 6%, only a ~2% volume fraction of the diamond lattice material underwent plastic deformation as compared to ~20% for its gyroid equivalent.<\/p>\n<p>&nbsp;<\/p>\n<p class=\"link-btn-style btn-yellow\"><a href=\"https:\/\/www.mdpi.com\/2504-4494\/8\/4\/176\" target=\"_blank\" rel=\"noopener\">Read the publication<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Timercan, A.; Campion, D.; Terriault, P.; Brailovski, V. (2024). Laser Powder Bed Fusion of Superelastic Ti-Ni Lattice Structures: Process Design and Testing. J. Manuf. Mater. Process. 2024, 8(4), 176. &nbsp; [&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-5242","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 of Superelastic Ti-Ni Lattice Structures: Process Design and Testing - 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-of-superelastic-ti-ni-lattice-structures-process-design-and-testing\/\" \/>\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 of Superelastic Ti-Ni Lattice Structures: Process Design and Testing - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\" \/>\n<meta property=\"og:description\" content=\"Timercan, A.; Campion, D.; Terriault, P.; Brailovski, V. 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