Static displacements and chemical correlations in alloys
نویسنده
چکیده
Recent experiments in metallic solid solutions have revealed interesting correlations between static pair-displacements and the ordering behavior of these alloys. This paper discusses a simple theoretical model which successfully explains these observations and which provides a natural framework for analyzing experimental measurements of pair-displacements and chemical correlations in solid solutions. The utility and scope of this model is demonstrated by analyzing results of experiments on Ni−Fe and Cr−Fe alloys and results of simulations of Cu−Au and Cu−Ag alloys. Typeset using REVTEX
منابع مشابه
A COMPARATIVE STUDY ON CHARACTERISTICS OF DYNAMIC OXIDE FILM OF MOLTEN Zn-Al ALLOYS
This paper investigates the difference between thickness of zinc-based alloys oxide films in dynamic condition using the oxide-metal-oxide (OMO) sandwich method and static condition by theoretical calculations. In dynamic condition, the thickness of the oxide film in the OMO sandwich sample was characterized by scanning electron microscopy (SEM). In the static condition, the thickness and type ...
متن کاملStatic and Pseudo Static Study of Stress and Displacement of Earth-Fill Dam Using Layered and Single-Layer Models
Earth-fill dams stability in steady state seepage condition is very important, especially during earthquakes. Numerical software analyses require accurate and realistic modeling of construction stages. Since earth-fill dams are constructed in different layers, so these conditions should be considered in software modeling to achieve a reasonable design. In this study, an earth-fill dam is modele...
متن کاملNonmonotonic TC trends in bi-based ferroelectric perovskite solid solutions.
We use first-principles density functional theory calculations to investigate the strongly nonlinear compositional trends in ferroelectric BiBO3-PbTiO3 solid solutions for a variety of cations on the perovskite B site. We demonstrate that previously tabulated crystal chemical parameters (extracted from other Pb-based perovskite alloys [Grinberg et al., J. Appl. Phys. 98, 094111 (2005)]) permit ...
متن کاملModelling of Crack Growth Based Acoustic Emission Release in Aluminum Alloys
Various theories in the past have addressed the correlation of material properties and the respective acoustic emission release during fracture. Whilst these theories yield good predictions for fundamental relationships, they neglect the dynamic displacements during crack formation. This paper presents first results for a new acoustic emission crack source model based on a finite element modell...
متن کاملStudy of temperature dependent atomic correlations in MgB2
We have studied temperature evolution of the local as well as the average crystal structure of MgB2 using real-space atomic pair distribution function (PDF) measured by high resolution neutron powder diffraction in a wide temperature range of T = 10–600 K. We find small positive correlation factors for the B–B and B–Mg pairs, determined by mean-square displacements (MSD) and the mean-square rel...
متن کامل