| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effects of Oxygen Interstitials on Phase Transformation Paths in Nb-Ti Alloys |
| Author(s) |
Ravit Silverstein, Raphaële J Clément, Carlos G Levi |
| On-Site Speaker (Planned) |
Ravit Silverstein |
| Abstract Scope |
Interstitials in multi principal element (MPE) b.c.c. alloys are generally acknowledged to have significant effects on their mechanical properties. At issue is understanding the interaction of O with MPE alloys containing elements from groups IVB, VB and VIB, the potential effects on the elemental distribution, and the consequences for mechanical behavior. This study addresses the effect of O incorporation in a binary Nb-Ti solid solutions as a baseline for subsequent studies in ternary and higher order MPE alloys. Alloys were splat quenched to refine segregation during solidification and to enable homogenization in reasonable times. Some splats were encapsulated and heat treated in 16O environments while others were crushed into powders and heat treated in 17O environments for NMR studies. The structure evolution upon O infusion was examined using transmission electron microscopy and solid state NMR. The studies provide insight into the phase transformations resulting from O ingress. |
| Proceedings Inclusion? |
Planned: |