{"id":5960,"date":"2026-01-07T14:09:49","date_gmt":"2026-01-07T19:09:49","guid":{"rendered":"https:\/\/cqfa.quebec\/?p=5960"},"modified":"2026-01-07T14:14:54","modified_gmt":"2026-01-07T19:14:54","slug":"the-lpbf-printability-and-as-printed-mechanical-properties-of-a-ti6246-alloy-as-a-function-of-printing-parameters-and-microstructure","status":"publish","type":"post","link":"https:\/\/cqfa.quebec\/en\/the-lpbf-printability-and-as-printed-mechanical-properties-of-a-ti6246-alloy-as-a-function-of-printing-parameters-and-microstructure\/","title":{"rendered":"The LPBF printability and as-printed mechanical properties of a Ti6246 alloy as a function of printing parameters and microstructure"},"content":{"rendered":"<p><em>Mouret, T.; Leclercq, A.; Brailovski, V. (2025). The LPBF printability and as-printed mechanical properties of a Ti6246 alloy as a function of printing parameters and microstructure. Materials Science and Engineering\u00a0: A, vol. 946, 2025, 149061. <\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Laser Powder Bed Fusion (LPBF) of titanium alloys has been widely investigated in the last decades and introduced in industry with concrete applications. Recently, the literature has highlighted the printability of various titanium alloys with different elemental compositions. Among them, a highly resilient Ti-6Al-2Sn-4Zr-6Mo alloy (Ti6246) was identified as a promising material for the automotive and aerospace industries, and the results of its successful printing using high-power systems (<em>P<\/em><sub>max<\/sub>\u00a0=\u00a0400\u00a0W) have already been reported. In the present work, Ti6246 alloy was printed on a power-limited system (<em>P<\/em><sub>max<\/sub>\u00a0=\u00a0200\u00a0W) using fifty-three printing parameter sets with variations in terms of laser power, scanning speed and hatching space, keeping the layer thickness constant at 50\u00a0\u03bcm. The as-built samples were then characterized to correlate the printing parameters to the microstructure, phases and mechanical properties. The results revealed that a volumetric energy density of \u223c100\u00a0J\/mm<sup>3<\/sup>\u00a0combined with a hatching space of \u223c150\u00a0\u03bcm was necessary to produce highly dense (&gt;99.9\u00a0%) samples with a reduced number of processing-induced flaws (keyhole pores and lack-of-fusion defects) and with homogeneous microstructure. These samples manifested excellent mechanical resistance and hardness (UCS &gt;1000\u00a0MPa and HV\u00a0&gt;\u00a0450 HV0.3), but a very limited ductility, thus indicating the need for subsequent post-processing. Using printing parameters corresponding to the highest energy input (135\u00a0J\/mm<sup>3<\/sup>) resulted in a partial in-situ\u00a0<em>\u03b1\u2019\u2019<\/em>\u00a0\u2192\u00a0<em>\u03b1<\/em>\u00a0+\u00a0<em>\u03b2<\/em>\u00a0phase transformation. This phenomenon was attributed to a significant overlap between two subsequently melted tracks, which reduced the cooling rate in the solidified material and promoted the formation of stable\u00a0<em>\u03b1<\/em>\u00a0and\u00a0<em>\u03b2<\/em>\u00a0phases of titanium. This latter observation provided useful insight into the printing of functionally graded Ti6246 parts.<\/p>\n<p>&nbsp;<\/p>\n<p class=\"link-btn-style btn-yellow\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0921509325012857\" target=\"_blank\" rel=\"noopener\">Read the publication<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mouret, T.; Leclercq, A.; Brailovski, V. (2025). The LPBF printability and as-printed mechanical properties of a Ti6246 alloy as a function of printing parameters and microstructure. Materials Science and Engineering\u00a0: [&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-5960","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>The LPBF printability and as-printed mechanical properties of a Ti6246 alloy as a function of printing parameters and microstructure - 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\/the-lpbf-printability-and-as-printed-mechanical-properties-of-a-ti6246-alloy-as-a-function-of-printing-parameters-and-microstructure\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The LPBF printability and as-printed mechanical properties of a Ti6246 alloy as a function of printing parameters and microstructure - CQFA - Carrefour qu\u00e9b\u00e9cois de la fabrication additive\" \/>\n<meta property=\"og:description\" content=\"Mouret, T.; Leclercq, A.; Brailovski, V. 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