|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||In-situ Small-angle Scattering Study of ω Particles Growth in Metastable β Titanium Alloys
||Jana Šmilauerová, Petr Harcuba, Dominik Kriegner, Miloš Janeček, Václav Holŭ
|On-Site Speaker (Planned)
The evolution and growth of ω phase nanoparticles were studied in metastable β-Ti alloys using small-angle x-ray scattering (SAXS). SAXS measurements were done in-situ during isothermal ageing on single-crystalline material prepared in an optical floating zone furnace. The scattering contrast is caused by different concentrations of alloying elements in the ω particles and in the β matrix. The concentration profile around growing ω phase particles was simulated with a diffusion equation with moving boundary conditions. The evolution of ω particle sizes and distances were determined from fitting the experimental data. Moreover, the diffusion coefficient of the alloying elements as well as the activation energy of the ω particles growth were evaluated.
||Planned: A print-only volume