scholarly journals Screw dislocation mobility in a face-centered cubic solid solution with short-range order

2022 ◽  
Vol 210 ◽  
pp. 114465
Author(s):  
Anas Abu-Odeh ◽  
David L. Olmsted ◽  
Mark Asta
Keyword(s):  
Solid Solution ◽  
Screw Dislocation ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Face Centered Cubic ◽  
Dislocation Mobility ◽  
Face Centered

scholarly journals Short-range order in face-centered cubic VCoNi alloys

2020 ◽  
Vol 4 (11) ◽  
Author(s):  
Tatiana Kostiuchenko ◽  
Andrei V. Ruban ◽  
Jörg Neugebauer ◽  
Alexander Shapeev ◽  
Fritz Körmann
Keyword(s):  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Face Centered Cubic ◽  
Face Centered

Estimation of the Critical Temperatures of Order-Disorder Phase Transitions in Cu-Au Alloys Using Short-Range Order Parameters

2019 ◽  
Vol 288 ◽  
pp. 65-70 ◽  
Author(s):  
Lhkamsuren Enkhtor ◽  
Valentin Silonov
Keyword(s):  
Short Range ◽  
Short Range Order ◽  
Interatomic Potential ◽  
Order Parameters ◽  
Range Order ◽  
Face Centered Cubic ◽  
Critical Temperatures ◽  
X Ray ◽  
Diffuse Scattering Intensity ◽  
Face Centered

An expression for calculating the critical temperature of order-disorder transition in face-centered cubic alloys is developed with accounting of pairwise interatomic potential in the first eleven shells. Obtained expression was applied for the estimation of critical temperatures at Cu3Au, CuAu, and CuAu3alloys in comparison with experimental data from phase diagram of Cu-Au system. Magnitudes of the pairwise interatomic potential in considered alloys was computed using values of the short-range order parameters which were experimentally obtained from X-ray diffuse scattering intensity. In this computation, the Krivoglaz-Clapp-Moss approximation and Cowley equations were applied.

Short-Range Order and Static Displacements in Polycrystalline Ni-13.1at. %W Alloy

2018 ◽  
Vol 271 ◽  
pp. 98-105
Author(s):  
Lhkamsuren Enkhtor ◽  
Ragchaa Galbadrakh ◽  
Valentin Silonov
Keyword(s):  
Diffuse Scattering ◽  
Short Range ◽  
Short Range Order ◽  
Fourier Transforms ◽  
Range Order ◽  
Dynamical Matrix ◽  
Face Centered Cubic ◽  
X Ray ◽  
Face Centered ◽  
The Fourier Transform

A methodology accounting for the contributions of static displacements of atoms to X-ray diffuse scattering by binary solid solutions with a face-centered cubic lattice was proposed. By microscopic accounting of static displacements of the atoms on the particular shell, we identified short- range order parameters on the first eight shells of Ni-13.1at. %W alloy from the intensity of X-ray diffuse scattering. The Fourier transform of static displacement of the atoms on every considered shell was calculated with the De Launay model using expressions of elements of dynamical matrix and Fourier transforms of quasi elastic forces, which are calculated by the pseudopotential method.

Short-Range Order and Solid Solution Hardening

1991 ◽  
Vol 168 (2) ◽  
pp. 437-444 ◽  
Author(s):  
M. S. Blanter ◽  
M. Ya. Fradkov
Keyword(s):  
Solid Solution ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Solid Solution Hardening ◽  
Solution Hardening

Local structure of the Zr–Al metallic glasses studied by proposed n-body potential through molecular dynamics simulation

2010 ◽  
Vol 25 (9) ◽  
pp. 1679-1688 ◽  
Author(s):  
S.Z. Zhao ◽  
J.H. Li ◽  
B.X. Liu
Keyword(s):  
Molecular Dynamics ◽  
Metallic Glasses ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Dynamics Simulation ◽  
Face Centered Cubic ◽  
Dynamics Simulations ◽  
Body Potential ◽  
Pair Analysis

An n-body potential is first constructed for the Zr–Al system and proven to be realistic by reproducing a number of important properties of the system. Applying the constructed potential, molecular dynamics simulations, chemical short-range order (CSRO) calculation, and Honeycutt and Anderson (HA) pair analysis are carried out to study the Zr–Al metallic glasses. It is found that for the binary Zr–Al system, metallic glasses are energetically favored to be formed within composition range of 35–75 at.% Al. The calculation shows that the CSRO parameter is negative and could be up to −0.17, remarkably indicating that there exists a chemical short-range order in the Zr–Al metallic glasses. The HA pair analysis also reveals that there are diverse short-range packing units in the Zr–Al metallic glasses, in which icosahedra and icosahedra/face-centered cubic (fcc)-defect structures are predominant.

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