|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||Insights into the Thermal Stability of Nanocrystalline Pt(Au,Pd) films
||Christopher John O'Brien, Blythe Clark, Stephen M Foiles
|On-Site Speaker (Planned)
||Christopher John O'Brien
There is much interest in the potential to stabilize nanocrystalline microstructures by using immiscible binary alloys to reduce the thermodynamic driving force for grain growth. However, isolating this effect from conventional means of microstructure stabilization, such as solute drag, is challenging. This work examines the potential for nanocrystalline microstructure stabilization in PtAu and PtPd alloys and compares model results with complementary experimental work where available. New embedded atom method binary interatomic potentials were generated for this purpose. Preferential segregation to specific grain boundaries is investigated and its impact on mobility is determined. The effect of solute on the mobility of boundaries is examined.