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Unraveling deformation mechanisms around FCC and BCC nanocontacts through slip trace and pileup topography analyses

Author
Varillas, J.; Ocenásek, J.; Jordi Torner; Alcala, J.
Type of activity
Journal article
Journal
Acta materialia
Date of publication
2017-02-15
Volume
125
First page
431
Last page
441
DOI
https://doi.org/10.1016/j.actamat.2016.11.067 Open in new window
Repository
http://hdl.handle.net/2117/100663 Open in new window
URL
http://www.sciencedirect.com/science/article/pii/S135964541630934X Open in new window
Abstract
Nanocontact loadings offer the potential to investigate crystal plasticity from surface slip trace emissions and distinct pileup patterns where individual atomic terraces arrange into hillocks and symmetric rosettes. Our MD simulations in FCC Cu and Al nanocontacts show development of specific dislocation interception, cross-slip and twin annihilation mechanisms producing traces along characteristic <011> and <112> directions. Although planar slip is stabilized through subsurface dislocation int...
Citation
Varillas, J., Ocenásek, J., Jordi Torner, Alcala, J. Unraveling deformation mechanisms around FCC and BCC nanocontacts through slip trace and pileup topography analyses. "Acta materialia", 15 Febrer 2017, vol. 125, p. 431-441.
Keywords
Indentation pileup, Indentation rosettes, Nanocontacts, Nanotwins, Slip traces
Group of research
InSup - Surface Interaction in Bioengineering and Materials Science Research Group

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