|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Effects of Microstructure on the Selective Internal Oxidation of Multi-Phase Alloys
||Stephen Kachur, Bryan Webler
|On-Site Speaker (Planned)
Selective internal oxidation of solute rich phases could be a potential step in a bulk-scale processing scheme for metal matrix composites. In multi-phase alloys this type of oxidation has been shown to proceed faster than predicted by traditional Wagner theory. Using Fe-Y binary and Fe-Ti-Y ternary alloys as model systems, connections were drawn between internal oxidation kinetics and pre-oxidation microstructure. Alloys were oxidized from 600-800oC under a range of low oxidant partial pressures. Plastic deformation was utilized via rolling of the material to produce alternate microstructures while holding composition constant. Of particular interest were the connectivity and surface area of the oxidizing phase, Fe17Y2. Along with oxidation kinetics, studies of oxide composition and stability were also performed.
||Planned: A print-only volume