Averaging of elastic constants for polycrystals
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Many materials of interest are polycrystals, i.e., aggregates of single crystals. Randomly distributed orientations of single crystals lead to macroscopically isotropic properties. Here in this paper, we briefly review strategies of calculating effective isotropic second and third order elastic constants from the single crystal ones. Our main emphasis is on single crystals of cubic symmetry. Specifically, the averaging of third order elastic constants has not been particularly successful in the past, and discrepancies have often been attributed to texturing of polycrystals as well as to uncertainties in the measurement of elastic constants of both poly and single crystals. While this may well be true, we also point out here shortcomings in the theoretical averaging framework.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1407891
- Alternate ID(s):
- OSTI ID: 1399293
- Report Number(s):
- LA-UR-17-24288; TRN: US1703059
- Journal Information:
- Journal of Applied Physics, Vol. 122, Issue 14; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Properties of dislocation drag from phonon wind at ambient conditions | text | January 2019 |
Fourth-order elastic moduli of polycrystals
|
journal | October 2019 |
Dislocation drag from phonon wind in an isotropic crystal at large velocities
|
journal | December 2019 |
Properties of Dislocation Drag from Phonon Wind at Ambient Conditions
|
journal | March 2019 |
Dynamical spin phenomena generated by longitudinal elastic waves traversing films and heterostructures
|
journal | December 2019 |
Mesomechanical Modeling and Numerical Simulation of the Diffraction Elastic Constants for Ti6Al4V Polycrystalline Alloy
|
journal | October 2018 |
Similar Records
Evaluating Bounds and Estimators for Constants of Random Polycrystals Composed of Orthotropic Elastic Materials
Determining elastic anisotropy of textured polycrystals using resonant ultrasound spectroscopy