Vol 4: Revisiting the Al-Al2O3 Interface: Coherent Interfaces and Misfit Accommodation.Reportar como inadecuado



 Vol 4: Revisiting the Al-Al2O3 Interface: Coherent Interfaces and Misfit Accommodation.


Vol 4: Revisiting the Al-Al2O3 Interface: Coherent Interfaces and Misfit Accommodation. - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Descargar gratis o leer online en formato PDF el libro: Vol 4: Revisiting the Al-Al2O3 Interface: Coherent Interfaces and Misfit Accommodation.
This article is from Scientific Reports, volume 4.AbstractWe study the coherent and semi-coherent Al-α-Al2O3 interfaces using molecular dynamics simulations with a mixed, metallic-ionic atomistic model. For the coherent interfaces, both Al-terminated and O-terminated nonstoichiometric interfaces have been studied and their relative stability has been established. To understand the misfit accommodation at the semi-coherent interface, a 1-dimensional 1D misfit dislocation model and a 2-dimensional 2D dislocation network model have been studied. For the latter case, our analysis reveals an interface dislocation structure with a network of three sets of parallel dislocations, each with pure-edge character, giving rise to a pattern of coherent and stacking-fault-like regions at the interface. Structural relaxation at elevated temperatures leads to a further change of the dislocation pattern, which can be understood in terms of a competition between the stacking fault energy and the dislocation interaction energy at the interface. Our results are expected to serve as an input for the subsequent dislocation dynamics models to understand and predict the macroscopic mechanical behavior of Al-α-Al2O3 composite heterostructures.



Autor: Pilania, Ghanshyam; Thijsse, Barend J.; Hoagland, Richard G.; Lazic, Ivan; Valone, Steven M.; Liu, Xiang-Yang

Fuente: https://archive.org/







Documentos relacionados