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- W4313401107 abstract "Ni-based superalloy IN718 is a popular choice for metal additive manufacturing (AM), and modified IN718 with the minor addition of Y2O3 is of interest to develop improved microstructure and mechanical properties. In this research, we studied the tensile mechanical property of IN718 with 0.5 wt.% Y2O3 addition. A novel mechano-chemical bonding (MCB) method was used to produce oxide dispersion strengthened (ODS) IN718 powders suitable for AM applications. SEM, EDX, and TEM were applied for microstructure analyses of both as-deposited and heat-treated coupons. The results revealed adding Y2O3 benefits both strength and ductility of as-printed ODS IN718, while pristine IN718 showed anisotropic ductility. Improved strength and reduced ductility were found in heat-treated IN718 and ODS IN718 due to the high density of strengthening phases and grain growth, while ODS IN718 with 0.5 wt.% Y2O3 showed slightly lower strength and better ductility compared with IN718 owing to the higher grain structure stability and lower density of γ′. EDS results revealed that high density of Al, Ti-rich particles formed in ODS IN718 by consuming γ′ forming elements. Detailed correlation between microstructure and mechanical properties was discussed." @default.
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- W4313401107 date "2023-01-01" @default.
- W4313401107 modified "2023-09-30" @default.
- W4313401107 title "Investigation of Microstructure and Mechanical Properties of Additive Manufacturing Fabricated Oxide Dispersion Strengthening (ODS) IN718 Alloys" @default.
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- W4313401107 doi "https://doi.org/10.1007/978-3-031-17475-9_11" @default.
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