Campus Units
Materials Science and Engineering, Ames Laboratory
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
2018
Journal or Book Title
arXiv
Abstract
It was recently reported that segregation of Zr to grain boundaries (GB) in nanocrystalline Cu can lead to the formation of disordered intergranular films [1,2]. In this study we employ atomistic computer simulations to study how the formation of these films affects the dislocation nucleation from the GBs. We found that full disorder of the grain boundary structure leads to the suppression of dislocation emission and significant increase of the yield stress. Depending on the solute concentration and heat-treatment, however, a partial disorder may also occur and this aids dislocation nucleation rather than suppressing it, resulting in elimination of the strengthening effect.
Copyright Owner
The Authors
Copyright Date
2018
Language
en
File Format
application/pdf
Recommended Citation
Borovikov, Valery; Mendelev, Mikhail I.; and King, Alexander H., "Effects of Grain Boundary Disorder on Yield Strength" (2018). Materials Science and Engineering Publications. 287.
https://lib.dr.iastate.edu/mse_pubs/287
Included in
Engineering Physics Commons, Materials Science and Engineering Commons, Nanoscience and Nanotechnology Commons, Probability Commons
Comments
Borovikov, Valery, Mikhail I. Mendelev, and Alexander H. King. "Effects of Grain Boundary Disorder on Yield Strength." arXiv preprint arXiv:1802.08199 (2018). Posted with permission.