Journal
ACTA MATERIALIA
Volume 57, Issue 10, Pages 3020-3028Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2009.03.008
Keywords
Nanoindentation; Orientation imaging microscopy (OIM); Metal and alloys - steel; Yield phenomena; Slip resistance
Funding
- National Science Foundation [DMR-0303395]
- Sigma Xi Grants-in-Aid of Research (GIAR)
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This paper describes the development of novel experimental protocols and data analysis procedures for extracting meaningful indentation stress-strain curves from spherical nanoindentation on polycrystalline samples, and correlating these measurements to the local crystal lattice orientation measured by orientation imaging microscopy at the indentation site. In particular, we demonstrate that it is possible to estimate the percentage increases in the local slip resistance in deformed samples of polycrystalline cubic metals from their fully annealed condition. These novel procedures are demonstrated on Fe-3% Si samples in the as-cast, 30% deformed and 80% deformed conditions. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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