|About this Abstract
||Materials Science & Technology 2019
||Late News Poster Session
||P1-115: Effect of Consolidation Conditions on the Densification of a Nanostructured Oxide-dispersion Strengthened FeNiZr Alloy via the Field Assisted Sintering Technology
||Sean Fudger, Thomas Luckenbaugh, Chad Hornbuckle, Efrain Hernández-Rivera, A.J. Roberts, Chris Haines, Kris Darling
|On-Site Speaker (Planned)
The Field Assisted Sintering Technology (FAST) allows for the consolidation of nano-structured powders to (near) fully dense parts. However, a complex relationship exists between the thermodynamic and kinetic driving forces of grain coarsening and densification. An oxide-dispersion-strengthened (ODS) nanostructured FeNiZr alloy fabricated via high energy mechanical alloying is being investigated. As there is no one size fits all consolidation recipe for input parameters, a design of experiments methodology was utilized to optimize the response of the material. The effects of variable pressure, heating rate, and two-step temperature/dwell profiles were evaluated as a means of maximizing the densification while minimizing the grain growth. Characterization in the form of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were performed to establish the relationship between processing, microstructure, and the resulting mechanical properties.