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Effect of post fabrication aging treatment on the microstructure, crystallographic texture and elevated temperature mechanical properties of IN718 alloy fabricated by selective laser melting

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dc.contributor.author Ozer, Seren
dc.contributor.author Bilgin, Güney Mert
dc.contributor.author Davut, Kemal
dc.contributor.author Esen, Ziya
dc.contributor.author Dericioglu, Arcan F.
dc.date.accessioned 2024-03-13T12:42:29Z
dc.date.available 2024-03-13T12:42:29Z
dc.date.issued 2022-08
dc.identifier.citation Ozer, Seren;...et.al. (2022). "Effect of post fabrication aging treatment on the microstructure, crystallographic texture and elevated temperature mechanical properties of IN718 alloy fabricated by selective laser melting", Journal of Materials Processing Technology, Vol.306. tr_TR
dc.identifier.issn 09240136
dc.identifier.uri http://hdl.handle.net/20.500.12416/7574
dc.description.abstract The effect of building direction and post fabrication aging treatment on the microstructure, crystallographic texture and high temperature mechanical properties of Inconel 718 (IN718) alloy fabricated by selective laser melting (SLM) method was investigated. After aging, arc-shaped structures seen in as-fabricated samples disappeared and converted into a mixture of columnar and equiaxed grains. Nano-sized γ″ and/or γ′ precipitates were formed upon aging; however, MC type carbides and Laves phase encountered in as-fabricated samples were not dissolved completely after aging. Moreover, aging did not alter the texture ((001)//building direction (BD)) of as-fabricated samples. Mechanical properties of the alloys under tension were influenced by the build direction, aging time and test temperature. As-fabricated samples produced in vertical direction exhibited higher room temperature strengths with lower ductility due to orientation of overlapped prior melt pools. Room temperature tensile test results revealed that peak aging caused a significant improvement in ultimate tensile strength (UTS), from 1066.5 MPa and 998.4 MPa to 1408.5 MPa and 1330.4 MPa whereas elongation values decreased from 27.5% and 32.2% to 19.6% and 23.7% in vertically and horizontally built samples, respectively. Peak-aged samples (aged at 700 °C for 8 h) tested at 600 °C displayed serrated regions in their stress-strain curves due to dynamic strain aging (DSA). Although strength values of the samples displayed an expected decrease by temperature, ductility of the samples reduced to minimum at temperatures around 700–800 °C, which was attributed to intermediate temperature embrittlement. tr_TR
dc.language.iso eng tr_TR
dc.relation.isversionof 10.1016/j.jmatprotec.2022.117622 tr_TR
dc.rights info:eu-repo/semantics/closedAccess tr_TR
dc.subject Additive Manufacturing tr_TR
dc.subject Dynamic Strain Aging tr_TR
dc.subject Inconel 718 Alloy tr_TR
dc.subject Mechanical Properties tr_TR
dc.subject Selective Laser Melting tr_TR
dc.subject Texture tr_TR
dc.title Effect of post fabrication aging treatment on the microstructure, crystallographic texture and elevated temperature mechanical properties of IN718 alloy fabricated by selective laser melting tr_TR
dc.type article tr_TR
dc.relation.journal Journal of Materials Processing Technology tr_TR
dc.contributor.authorID 52373 tr_TR
dc.identifier.volume 306 tr_TR
dc.contributor.department Çankaya Üniversitesi, Mühendislik Fakültesi, Malzeme Bilimi ve Mühendisliği Bölümü tr_TR


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