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Nanoindentation analysis as a two-dimensional tool for mapping the mechanical properties of complex surfaces

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Abstract

Instrumented indentation (referred to as nanoindentation at low loads and low depths) has now become established for the single point characterization of hardness and elastic modulus of both bulk and coated materials. This makes it a good technique for measuring mechanical properties of homogeneous materials. However, many composite materials are composed of material phases that cannot be examined in bulk form ex situ (e.g., carbides in a ferrous matrix, calcium silicate hydrates in cements, etc.). The requirement for in situ analysis and characterization of chemically complex phases obviates conventional mechanical testing of large specimens representative of these material components. This paper will focus on new developments in the way that nanoindentation can be used as a two-dimensional mapping tool for examining the properties of constituent phases independently of each other. This approach relies on large arrays of nanoindentations (known as grid indentation) and statistical analysis of the resulting data.

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Correspondence to Nicholas X. Randall.

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Randall, N.X., Vandamme, M. & Ulm, FJ. Nanoindentation analysis as a two-dimensional tool for mapping the mechanical properties of complex surfaces. Journal of Materials Research 24, 679–690 (2009). https://doi.org/10.1557/jmr.2009.0149

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  • DOI: https://doi.org/10.1557/jmr.2009.0149

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