Document Type
Article
Publication Date
1-23-2019
Publication Title
American Mineralogist
Volume
104
Issue
2
First page number:
276
Last page number:
281
Abstract
We present a suite of low strain deformation experiments conducted on polycrystalline San Carlos olivine in a deformation DIA apparatus at temperatures ranging from 440 to 1106 °C at pressures between 3.8 and 4.6 GPa. The deformation behavior was monitored using in situ diffraction of white synchrotron X‑rays. The experiments were conducted at a slow strain rate of ~5 × 10–6/s so as to allow the initial elastic behavior to be closely monitored. For each experiment, we fit the diffraction data using elastic plastic self-consistent (EPSC) models. We find that to model the experiments we must incorporate an isotropic deformation mechanism that permits a small amount of non-elastic deformation during the initial elastic portion of the experiment. This deformation mechanism mimics the observed reduction in the elastic modulus as a function of temperature and permits us to better model the remainder of the stress strain curve. The critical resolved shear stresses (CRSS) for slip obtained from these models compare well with those measured in single-crystal deformation experiments
Disciplines
Geology
File Format
File Size
1700 kb
Language
English
Rights
IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Repository Citation
Burnley, P. C.,
Kaboli, S.
(2019).
Elastic Plastic Self-Consistent (EPSC) Modeling of San Carlos Olivine Deformed in a D-DIA Apparatus.
American Mineralogist, 104(2),
276-281.
http://dx.doi.org/10.2138/am-2019-6666
