Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-24T10:57:23.789Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of a Surface Constraining Layer on the Plastic Deformation of Au Microspheres

Published online by Cambridge University Press:  10 January 2018

AZM Ariful Islam  and
Robert J. Klassen
AZM Ariful Islam*
Affiliation:
Department of Mechanical and Materials Engineering, Western University, London, Ontario N6A 5B9, Canada.
Robert J. Klassen
Affiliation:
Department of Mechanical and Materials Engineering, Western University, London, Ontario N6A 5B9, Canada.
*
*(Email: [email protected]; [email protected])
Get access

Abstract

Single crystal Au microspheres, of 3 μm diameter, with sputter-deposited Ni surface layers, of 40 or 80 nm thickness, were tested in compression at three loading rates to investigate the role of thin passive layers on the mechanisms of plastic deformation of small-volume FCC ductile metal samples. The Ni layer resulted in an increase in the incipient yield force by about 10%. Micro-cracking of the Ni layer was observed to occur with incipient yielding. The estimated apparent activation volume of the incipient plastic deformation process was found to be nearly identical for the Ni-coated and the uncoated Au microspheres. This suggests that, while the stress required to initiate incipient plastic deformation was increased by the constraint imposed by the Ni layer, the subsequent plastic flow occurred by a dislocation nucleation and glide mechanism that is essentially the same as that occurring in an unconstrained Au microsphere.

Keywords

Aucoatingstress/strain relationship
Type
Articles
Information
MRS Advances , Volume 3 , Issue 8-9: Theory, Characterization and Modeling , 2018 , pp. 427 - 432
Check for updates
Copyright
Copyright © Materials Research Society 2018 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Greer, J.R., Oliver, W.C., Nix, W.D., Acta Mater. 53, 1821–1830 (2005).CrossRefGoogle Scholar
Nix, W.D., Greer, J.R., Feng, G., Lilleodden, E.T., Thin Solid Films 515, 3152–3157 (2007).CrossRefGoogle Scholar
Frick, C.P., Clark, B.G., Orso, S., Schneider, A.S., Arzt, E., Mater. Sci. Eng. A 489, 319–329 (2008).CrossRefGoogle Scholar
Uchic, M.D., Dimiduk, D.M., Florando, J.N., Nix, W.D., Science 305, 986–9 (2004).CrossRefGoogle Scholar
Nix, W., Metall. Trans. A 20 (1989).CrossRefGoogle Scholar
Venkatraman, R., Bravman, J.C., Mater, J.. Res. 7, 2040–2048 (1992).Google Scholar
Fredriksson, P., Gudmundson, P., Int. J. Plast. 21, 1834–1854 (2005).CrossRefGoogle Scholar
Fan, H., Li, Z., Huang, M., Zhang, X., Int. J. Solids Struct. 48, 1754–1766 (2011).CrossRefGoogle Scholar
Kobrinsky, M.J., Thompson, C. V., Acta Mater. 48, 625–633 (2000).CrossRefGoogle Scholar
Keller, R.-M., Baker, S.P., Arzt, E., Mater, J.. Res. 13, 1307–1317 (1998).Google Scholar
Mordehai, D., Lee, S.-W., Backes, B., Srolovitz, D.J., Nix, W.D., Rabkin, E., Acta Mater. 59, 5202–5215 (2011).CrossRefGoogle Scholar
Nix, W.D., Lee, S., Philos. Mag. 91, 1084–1096 (2011).CrossRefGoogle Scholar
Volkert, C.A., Lilleodden, E.T., Philos. Mag. 86, 5567–5579 (2006).CrossRefGoogle Scholar
Maharaj, D., Bhushan, B., Nanoscale 6, 5838 (2014).CrossRefGoogle Scholar
Islam, A.A., Klassen, R.J., Mater, J.. Res. 32, 3507–3515 (2017).Google Scholar
Ebrahimi, F., Bourne, G., Kelly, M., Matthews, T., Nanostructured Mater. 11, 343–350 (1999).CrossRefGoogle Scholar
Ng, K.S., Ngan, A. H.W., Acta Mater. 57, 4902–4910 (2009).CrossRefGoogle Scholar
Bhakhri, V., Wang, J., Ur-rehman, N., Ciurea, C., Giuliani, F., Vandeperre, L.J., Mater, J.. Res. 27, 65–75 (2011).Google Scholar
Pirouz, P., Demenet, J. L., Hong, M. H., Philos. Mag. A 81, 1207–1227 (2001).CrossRefGoogle Scholar
Gall, K., Diao, J., Martin, Dunn L., Nano Lettters 4, 2431–2436 (2004).CrossRefGoogle Scholar
Wheeler, J.M., Niederberger, C., Tessarek, C., Christiansen, S., Michler, J., Int. J. Plast. 40, 140–151 (2013).CrossRefGoogle Scholar