Abstract
Variation in the mechanical properties of copper subjected to severe plastic deformation (SPD) is studied experimentally to understand the mechanics of nanoscale deformation. By varying the parameters of SPD process, a set of samples with different levels of damage associated with plastic deformation is obtained. The distribution of the evolving structural features, and possibly its type and nature, may vary according to the amount of damage induced in the sample. The various levels of damage is introduced by varying the duration of electrochemical polishing on mechanically polished samples and also by using surface mechanically attrition treatment (SMAT) technique. Mechanical properties such as microhardness and nanohardness are then obtained in the sample surface. The surface deformation behavior near the indent is also characterized by optical imaging. Based on the experimentally obtained correlations, the characteristic length scale of deformation associated with indentation is discussed.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Fecht HJ, Ivanisenko Y (2007) Nanostructured materials, 2nd edn. William Andrew Publishing, Norwich, pp 119–172
Turley DM, Samuels LE (1985) The nature of mechanically polished surfaces of copper: polishing with fine diamond abrasives. Metallography 18(2):149–160
Turley DM, Samuels LE (1981) The nature of mechanically polished surfaces of copper. Metallography 14(4):275–294
Sanders PG, Eastman JA, Weertman JR (1997) Elastic and tensile behavior of nanocrystalline copper and palladium. Acta Mater 45(10):4019–4025
Nix WD, Gao H (1998) Indentation size effects in crystalline materials: a law for strain gradient plasticity. J Mech Phys Solids 46(3):411–425
Liu Y, Ngan AHW (2001) Depth dependence of hardness in copper single crystals measured by nanoindentation. Scr Mater 44(2):237–241
Lu J, Lu K (2003) Comprehensive structural integrity. Pergamon, Oxford, pp 495–528
Lu K, Lu J (2004) Nanostructured surface layer on metallic materials induced by surface mechanical attrition treatment. Mater Sci Eng A 375–377:38–45
Mao XY, Li DY, Fang F (2010) A simple technique of nanocrystallizing metallic surfaces for enhanced resistances to mechanical and electrochemical attacks. Mater Sci Eng A 527(12):2875–2880
Acknowledgements
The authors would like to thank Center for Advanced Materials and Processing (CAMP) at Clarkson University for the use of their resources and facilities.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 The Society for Experimental Mechanics
About this paper
Cite this paper
Gale, J.D., Achuthan, A. (2013). Characteristic Length Scale Investigation on the Nanoscale Deformation of Copper. In: Antoun, B., Qi, H., Hall, R., Tandon, G., Lu, H., Lu, C. (eds) Challenges in Mechanics of Time-Dependent Materials and Processes in Conventional and Multifunctional Materials, Volume 2. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4241-7_14
Download citation
DOI: https://doi.org/10.1007/978-1-4614-4241-7_14
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-4240-0
Online ISBN: 978-1-4614-4241-7
eBook Packages: EngineeringEngineering (R0)