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Nano-meter scale plasticity in KBr studied by nanoindenter and force microscopy

Manimunda, P and Filleter, T and Egberts, P and Jayaram, V and Biswas, SK and Bennewitz, R (2009) Nano-meter scale plasticity in KBr studied by nanoindenter and force microscopy. In: Symposium on Probing Mechanics at Nanoscale Dimensions held at the 2009 MRS Spring Meeting, APR 14-17, 2009, San Francisco, CA, pp. 81-86.

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Abstract

The early stages of plasticity in KBr single crystals have been studied by means of nano-meter-scale indentation in complementary experiments using both a nanoindenter and an atomic force microscope. Nanoindentafion experiments precisely correlate indentation depth and forces, while force microscopy provides high-resolution force measurements and images of the surface revealing dislocation activity. The two methods provide very similar results for the onset of plasticity in KBr. Upon loading we observe yield of the surface in atomic layer units which we attribute to the nucleation of single dislocations. Unloading is accompanied by plastic recovery as evident from a non-linear force distance unloading curve and delayed discrete plasticity events.

Item Type: Conference Proceedings
Additional Information: Copyright for this article belongs to The Materials Research Society.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 08 Mar 2010 12:48
Last Modified: 07 Sep 2011 06:44
URI: http://eprints.iisc.ernet.in/id/eprint/25835

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