Abstract
Here we investigate the elastic and plastic anisotropy of hexagonal materials as a function of crystal orientation using a high-throughput approach (spherical nanoindentation). Using high purity zirconium as a specific example, we demonstrate the differences in indentation moduli, indentation yield strengths and indentation post-elastic hardening rates over multiple grain orientations. These results are validated against bulk single crystal measurements, as well as data from cubic materials. By varying the indenter size (radius), we are also able to demonstrate indentation size effects in hexagonal materials, including possible signatures of strain hardening due to twin formation in the nanoindentation stress-strain curves.
Original language | English (US) |
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Pages (from-to) | 241-245 |
Number of pages | 5 |
Journal | Scripta Materialia |
Volume | 113 |
DOIs | |
State | Published - 2016 |
Bibliographical note
Publisher Copyright:© 2015 Elsevier Ltd. All rights reserved.
Keywords
- Electron backscattering diffraction (EBSD)
- Indentation stress-strain
- Nanoindentation
- Twinning
- Work hardening