{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,16]],"date-time":"2025-09-16T16:57:31Z","timestamp":1758041851340,"version":"3.44.0"},"reference-count":0,"publisher":"EPMA","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Inconel 718 (INC718) components manufactured by Directed Energy Deposition (DED) require optimized post-processing heat treatments due to their distinct solidification conditions and resultant microstructures compared to conventional manufacturing methods. While extensive research exists on heat treatments for wrought and powder bed fusion-produced INC718, limited studies address DED-specific heat treatment optimisation. This study and explores the effects of various solutions and ageing heat treatments on DED-manufactured INC718 through samples' mechanical and microstructural characterisation by using OM, SEM|EDS|EBSD, and Vickers hardness testing. The as-deposited material exhibited significant niobium segregation and Laves phase formation in interdendritic regions. Solution treatment at 1150\u00b0C proved more effective at dissolving Laves phase compared to conventional 980\u00b0C treatment. Modified solution and ageing parameters (1150\u00b0C|1h + 720\u00b0C|8h + 620\u00b0C|8h) resulted in significantly improved hardness (491\u00b113 HV0.2) compared to standard heat treatments. These findings demonstrate the necessity of developing specific heat treatment protocols for DED-manufactured INC718 to achieve optimal properties.<\/jats:p>","DOI":"10.59499\/ep256767779","type":"proceedings-article","created":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T12:58:48Z","timestamp":1757595528000},"source":"Crossref","is-referenced-by-count":0,"title":["Heat Treatments Of Inconel 718 Produce By L-DED"],"prefix":"10.59499","author":[{"name":"Faculty of Engineering of the University of Porto","sequence":"first","affiliation":[]},{"given":"Il\u00eddio","family":"Costa","sequence":"first","affiliation":[]},{"name":"Faculty of Engineering of the University of Porto","sequence":"additional","affiliation":[]},{"given":"Bernardo L.","family":"Ribeiro","sequence":"additional","affiliation":[]},{"name":"Faculty of Engineering of the University of Porto","sequence":"additional","affiliation":[]},{"given":"Dinis","family":"Carneiro","sequence":"additional","affiliation":[]},{"name":"Faculty of Engineering of the University of Porto","sequence":"additional","affiliation":[]},{"given":"Bruno","family":"Cunha","sequence":"additional","affiliation":[]},{"name":"Faculty of Engineering of the University of Porto","sequence":"additional","affiliation":[]},{"given":"Jos\u00e9","family":"Monteiro","sequence":"additional","affiliation":[]},{"name":"Faculty of Engineering of the University of Porto","sequence":"additional","affiliation":[]},{"given":"Elsa W.","family":"Sequeiros","sequence":"additional","affiliation":[]}],"member":"38849","published-online":{"date-parts":[[2025,9,11]]},"event":{"name":"Euro Powder Metallurgy 2025 Congress & Exhibition","acronym":"Euro PM2025"},"container-title":["Euro PM2025 Proceedings"],"original-title":[],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T12:58:56Z","timestamp":1757595536000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.publications.epma.com\/product\/heat-treatments-of-inconel-718-produce-by-l-ded\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9,11]]},"references-count":0,"URL":"https:\/\/doi.org\/10.59499\/ep256767779","relation":{},"subject":[],"published":{"date-parts":[[2025,9,11]]}}}