Dislocation impediment by the grain boundaries in polycrystals
Materials Science
2021-04-13 v4
Abstract
Thermodynamic dislocation theory incorporating dislocation impediment by the grain boundaries is developed to analyze the shear test of polycrystals. With a small set of physics based material parameters, we are able to simulate the stress-strain curves for the load and its reversal, which are consistent with the experimental curves of Thuillier and Manach [2009]. Representative distributions of plastic slip under load and its reversal are presented, and their evolution explains the extended length of the transition stage during load reversal.
Cite
@article{arxiv.2008.09056,
title = {Dislocation impediment by the grain boundaries in polycrystals},
author = {Yinguang Piao and Khanh Chau Le},
journal= {arXiv preprint arXiv:2008.09056},
year = {2021}
}
Comments
29 pages, 15 figures