scholarly journals Accurate prediction of high-temperature elastic constants of Ti0.5Al0.5N random alloy

2021 ◽  
pp. 138872
Author(s):  
Johan Tidholm ◽  
Ferenc Tasnádi ◽  
Igor A. Abrikosov
Keyword(s):  
High Temperature ◽  
Elastic Constants ◽  
Accurate Prediction ◽  
Random Alloy

scholarly journals High temperature and pressure effects on the elastic properties of B2 intermetallics AgRE

Open Physics ◽  
2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Lili Liu ◽  
Xiaozhi Wu ◽  
Weiguo Li ◽  
Rui Wang ◽  
Qing Liu
Keyword(s):  
High Temperature ◽  
Intermetallic Compounds ◽  
Elastic Properties ◽  
Elastic Constants ◽  
Second Order ◽  
Pressure Effects ◽  
High Temperature And Pressure ◽  
Normal Behavior ◽  
Temperature And Pressure ◽  
Temperature And Pressure Effects

AbstractThe high temperature and pressure effects on the elastic properties of the AgRE (RE=Sc, Tm, Er, Dy, Tb) intermetallic compounds with B2 structure have been performed from first principle calculations. For the temperature range 0-1000 K, the second order elastic constants for all the AgRE intermetallic compounds follow a normal behavior: they decrease with increasing temperature. The pressure dependence of the second order elastic constants has been investigated on the basis of the third order elastic constants. Temperature and pressure dependent elastic anisotropic parameters A have been calculated based on the temperature and pressure dependent elastic constants.

scholarly journals Elastic, Mechanical, and Phonon Behavior of Orpiment Arsenic Trisulfide under Pressure

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Liwu Jiang ◽  
Meiling Wu ◽  
Peng Shi ◽  
Chuanhui Zhang
Keyword(s):  
Experimental Data ◽  
High Temperature ◽  
Force Field ◽  
Elastic Constants ◽  
Phonon Dispersion ◽  
Geometry Optimization ◽  
Elastic Parameters ◽  
Arsenic Trisulfide ◽  
High Temperature And Pressure ◽  
Temperature And Pressure

Arsenic trisulfide (As2S3) has been found to be an excellent glass former at high temperature and pressure. However, there is still some scarcity for the elastic and phonon behavior of the orpiment phase. By using the Dreiding force field of the geometry optimization computations, we investigated the elastic constants, mechanical moduli, and the phonon dispersion of orpiment As2S3 under the pressure from 0 to 5 GPa. Some results of the elastic parameters of orpiment-As2S3 at 0 GPa are consistent with the experimental data. The phonon dispersions for orpiment As2S3 under pressure are also reasonable with previous calculations.

Measurement of Atomic Elastic Constants by Pulsed Neutron Powder Diffraction

1992 ◽  
Vol 36 ◽  
pp. 577-583
Author(s):  
A. C. Lawson ◽  
G. H. Kwei ◽  
J. A. Goldstone ◽  
B. Cort ◽  
R. I. Sheldon ◽  
...  
Keyword(s):  
High Temperature ◽  
Neutron Diffraction ◽  
Rietveld Refinement ◽  
Powder Diffraction ◽  
Elastic Constants ◽  
Diffraction Data ◽  
High Temperature Superconductors ◽  
Neutron Powder Diffraction ◽  
Neutron Diffraction Data ◽  
Pulsed Neutron

AbstractWe have developed a technique for determining the atomic elastic constants from measurements of the Debye-Waller factors. The Debye-Waller factors are obtained by Rietveld refinement of time-of-flight neutron diffraction data and interpreted in terms of an atomic Debye-Waller temperature. The method is applicable to powders and to materials that must be encapsulated for safety or environmental reasons. We will illustrate our technique with applications to actinide metals, to metallic hydrides and to high-temperature superconductors.

scholarly journals Determination of the high temperature elastic properties and diffraction elastic constants of Ni-base superalloys

2016 ◽  
Vol 89 ◽  
pp. 856-863 ◽  
Author(s):  
P.E. Aba-Perea ◽  
T. Pirling ◽  
P.J. Withers ◽  
J. Kelleher ◽  
S. Kabra ◽  
...  
Keyword(s):  
High Temperature ◽  
Elastic Properties ◽  
Elastic Constants
Sign in / Sign up

Export Citation Format

Share Document