Healing of Nanocracks by Disclinations
Name
Xu-2013-Healing of nanocracks.pdf
Size
1.61 MB
Format
Adobe PDF
Checksum (MD5)
f32db3a62bbf2e60d89681b3565ec79e
Author(s)
Xu, Guoqiang
Demkowicz, Michael J.
Date Issued
October 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Xu, G. Q., and M. J. Demkowicz. “Healing of Nanocracks by Disclinations.” Physical Review Letters 111, no. 14 (October 2013). © 2013 American Physical Society
Version
Final published version
Abstract
We present a new mechanism—discovered using molecular dynamics simulations—that leads to complete healing of nanocracks. This mechanism relies on the generation of crystal defects known as disclinations by migrating grain boundaries. Crack healing by disclinations does not require any compressive loads applied normal to the crack faces and even occurs under monotonic tensile loading. By closing small cracks and suppressing the propagation of others, this mechanism may provide a novel way of mitigating internal damage that influences ductility in nanocrystalline metals.
MIT Department
Massachusetts Institute of Technology. Department of Materials 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.111.145501
