Surface Rebound of Relativistic Dislocations Directly and Efficiently Initiates Deformation Twinning
Name
PhysRevLett.117.165501.pdf
Size
997.85 KB
Format
Adobe PDF
Checksum (MD5)
7b51809f7fa9ee46bc265223faf2d50f
Author(s)
Li, Qing-Jie
Li, Ju
Shan, Zhi-Wei
Ma, Evan
Date Issued
October 2016
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Li, Qing-Jie et al. “Surface Rebound of Relativistic Dislocations Directly and Efficiently Initiates Deformation Twinning.” Physical Review Letters 117.16 (2016): n. pag. © 2016 American Physical Society
Version
Final published version
Abstract
Under ultrahigh stresses (e.g., under high strain rates or in small-volume metals) deformation twinning (DT) initiates on a very short time scale, indicating strong spatial-temporal correlations in dislocation dynamics. Using atomistic simulations, here we demonstrate that surface rebound of relativistic dislocations directly and efficiently triggers DT under a wide range of laboratory experimental conditions. Because of its stronger temporal correlation, surface rebound sustained relay of partial dislocations is shown to be dominant over the conventional mechanism of thermally activated nucleation of twinning dislocations.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.117.165501
