Probing the strain hardening response of small wear volumes with nanoindentation

M. J. Cordill, N. R. Moody, J. M. Jungk, M. S. Kennedy, W. M. Mook, S. V. Prasad, D. F. Bahr, W. W. Gerberich

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Abstract

In order to characterize the wear and related mechanical behavior of materials from small volumes, a program employing nanoscratch and nanoindentation was performed. Nanoscratch techniques were used to generate square wear patterns with varying degrees of shear strain followed by nanoindentation tests to measure the mechanical properties within the deformation area. Results show a systematic increase in hardness with both the applied load and number of nanoscratch passes. An analytical approach was used to determine the stress-strain response and strain hardening behavior of electroformed nickel. The strain hardening exponent determined from this method follows the work hardening behavior established from previous tensile tests, supporting the use of a nanomechanics-based approach for evaluating the mechanical properties of wear-tested material.

Original languageEnglish (US)
Pages (from-to)2226-2232
Number of pages7
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume42
Issue number8
DOIs
StatePublished - Aug 1 2011

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    Cordill, M. J., Moody, N. R., Jungk, J. M., Kennedy, M. S., Mook, W. M., Prasad, S. V., Bahr, D. F., & Gerberich, W. W. (2011). Probing the strain hardening response of small wear volumes with nanoindentation. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 42(8), 2226-2232. https://doi.org/10.1007/s11661-011-0629-8