Abstract The complex interplay between chemistry, microstructure, and behavior of many engineering materials has been investigated predominantly by experimental methods. Parallel to the increase in computer power, advances computational modeling methods have resulted a level sophistication which is comparable that experiments. At continuum level, one class such models based on thermodynamics, p...

Ceramics with starting compositions of P1−xGexNb9O25 (x = 0–1) were prepared by conventional solid-state reaction method. Crystal phases, microstructure and dielectric properties investigated. The formed crystal phases for the x 0 1 identified as PNb9O25 GeNb18O47, respectively, a continuous solid solution was < 1. As increased, decrease grain size, denser an increase constant observed. composi...

The synthesis of two-dimensional double metal cyanide complexes of the formula Co(H2O)2[M(CN)4].4H2O (M=Ni, Pd or Pt) and the X-ray crystal structure of Co(H2O)2[Pd(CN)4].4H2O are presented. The anhydrous forms of these complexes were found to be effective catalyst precursors for the homopolymerization of propylene oxide as well as the random copolymerization of propylene oxide and carbon dioxi...

We present a methodology for creating a simulated foam microstructure for use in forward simulations of wave equations to quantitatively analyze the expected scattering phenomenon primarily responsible for the attenuation of interrogating signals in Sprayed-On Foam Insulation (SOFI). Our approach builds off of the popular use of Voronoi Tessalations for crystal growth modeling by using the Lagu...

This paper presents investigate the therm BackScattered Diffract with centimetric grai placement and strain fields stitutive modelling of crystal Image Correlation (DIC) and Infrared Thermography (IRT) methods to anical behavior of an aluminum at the microstructural scale. Electron SD) is used to characterize the microstructure of a 3 mm thick specimen ion (EB n size. This study combines the fo...

Polycrystalline material microstructure is simulated by Johnson-Mehl model. Finite element analysis is implemented on unit volumes of Johnson-Mehl grain structures, which are aggregates of anisotropic grains orientated by a uniform-random distribution. Monte Carlo techniques are utilized in obtaining the statistical properties of elastic moduli of the ensemble from finite element solutions. The...

The magnetic microstructure of SrRuO3 thin films is studied using Lorentz transmission electron microscopy ~TEM!. The zero-field-cooled magnetic stripe structure shows one-to-one correlation with the crystal domain structure and is used to identify the uniaxial magnetic anisotropy of these films, consistent with results on single domain films. The anisotropy is shown to be primarily magnetocrys...

We report that colloid-in-liquid crystal (CLC) gels can be formed via a two-step process that involves spinodal decomposition of a dispersion of colloidal particles in an isotropic phase of mesogens followed by nucleation of nematic domains within the colloidal network defined by the spinodal process. This pathway contrasts to previously reported routes leading to the formation of CLC gels, whi...

Three newly identified cross-slip mechanisms from atomistic simulations of fcc crystals, namely surface, bulk and intersection cross-slip types, were hierarchically informed into discrete dislocation dynamics simulations. The influence of each cross-slip type on the evolution of the dislocation microstructure in face-centered cubic microcrystals having different crystal sizes and initial disloc...