|About this Abstract
||MS&T21: Materials Science & Technology
||Late News Poster Session
||P3-10: Additively Manufactured 718 Ni Alloys with Oxide Nanoparticles
||Benjamin T. Stegman, Xinghang Zhang, Haiyan Wang, Bo Yang, Zhongxia Shang, Jie Ding, Tianyi Sun, William Jarosinski, Jack Lopez
|On-Site Speaker (Planned)
||Benjamin T. Stegman
While direct metal laser sintering (DMLS) has been thoroughly explored in many workhorse alloys, oxide dispersion strengthening (ODS) alternatives of these alloys have presently had little investigation. Here we report on an ODS alloy 718 (718) successfully developed by mixing oxide powders with control 718 powders to produce a homogeneous distribution of oxide nanoparticles, which then were used in the DMLS technique. This newly developed metal matrix composite (MMC) was investigated under various forms of material characterization, ranging from X-ray diffraction to transmission electron microscopy to analyse microstructures and chemistry from macroscale to nanoscale. This study reveals the prominent differences between control 718 and this new ODS alloy, and how the presence of oxide nanoparticles alters the microstructure and mechanical behaviors. This new processing technique demonstrates the possibilities of using DMLS to fabricate ODS alloys for applications in extreme evironments.