|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Additive Manufacturing of Oxide Dispersion Strengthened (ODS) Steel via Selective Laser Melting
||Hannah Coe, Somayeh Pasebani
|On-Site Speaker (Planned)
An oxide dispersion strengthened (ODS) alloy was manufactured from a pre-alloyed composition of Fe-24Cr-8Al -0.5Y using selective laser melting (SLM). Three techniques were utilized to facilitate the precipitation of Y2O3 nanoparticles and determine a method to produce the optimal size and distribution of oxide particles within the matrix. In the first process, iron oxide powder was mechanically alloyed with Fe-24Cr-8Al-0.5Y, heat treated, and consolidated by SLM. The second method uses the same procedure as the first, omitting the heat treatment step and instead consolidating the mechanically alloyed powder directly. The third technique relies upon a control of oxygen in the build environment during SLM to enrich the material with oxygen without the addition of iron oxide particles. Microstructure studies and mechanical tests were performed to determine which process resulted in optimal properties and to compare results obtained by SLM with similar ODS steel compositions produced by traditional consolidation methods.
||Planned: Supplemental Proceedings volume