Abstract Melt viscosity is one of the most critical physical properties controlling magma transport dynamics and eruptive style. Although measurements are widely used to study model flow behavior magmas, recent research has revealed that nanocrystallization Fe–Ti-oxides can compromise reliability data. This phenomenon occur during laboratory around glass transition temperature ( T g ) lead depl...

The formation of nanocrystals is at the heart various scientific disciplines, but atomic mechanisms underlying early stages crystallization from supersaturated solutions are still rather unclear. Here, we used in situ liquid-phase scanning transmission electron microscopy to study level very gold nanocrystal growth, and evolution its crystallinity. We found that nucleation initiated by poorly c...

Surface nanocrystallization of metals and alloys via high-frequency ultrasonic shot peening (USP) can significantly increase the mechanical properties materials. However, relationship between external process parameters internal microstructure materials is still unclear an accurate numerical model to simulate USP urgently required for better control grain refinement process. In this study, we s...