4 papers
Ductility and Brittle Fracture of Tungsten by Disconnection Pile-up on Twin Boundaries
Omar Hussein, Nicolas Bertin, Jakub Veverka +5
Refractory body-centered cubic (BCC) metals and alloys are of extraordinary importance in modern technological and structural applications. However, their wider adoption in science…
Self-pinning mechanism for grain boundary stabilization
Omar Hussein, Yuri Mishin
Previous research focused on two different mechanisms of microstructure stabilization in alloys: thermodynamic stabilization by reducing the grain boundary (GB) free energy and kin…
A model of full thermodynamic stabilization of nanocrystalline alloys
Omar Hussein, Yuri Mishin
We propose a model of a polycrystalline alloy combining the Potts model for grain orientations with a lattice-gas model for solute thermodynamics and diffusion. The alloy evolution…
The origin of strings and rings in the atomic dynamics of disordered systems
Omar Hussein, Yang Li, Y. Mishin
It has long been believed that the atomic dynamics in disordered structures, such as undercooled liquids and pre-melted interfaces, are characterized by collective atomic rearrange…