Next Article in Journal
Improvement of Growth Interface Stability for 4-Inch Silicon Carbide Crystal Growth in TSSG
Next Article in Special Issue
Hardening and Creep of Ion Irradiated CLAM Steel by Nanoindentation
Previous Article in Journal
Origin of Nanoscale Incipient Plasticity in GaAs and InP Crystal
Open AccessArticle

Bending Nanoindentation and Plasticity Noise in FCC Single and Polycrystals

1
Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506, USA
2
Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21216, USA
3
Department of Control Engineering, Faculty of Electrical Engineering, Czech Technical University in Prague, Technika 2, 16627 Prague 6, Czech Republic
4
Department of Physics and Astronomy, West Virginia University, Morgantown, WV 26506, USA
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(12), 652; https://doi.org/10.3390/cryst9120652
Received: 21 October 2019 / Revised: 3 December 2019 / Accepted: 5 December 2019 / Published: 7 December 2019
We present a high-throughput nanoindentation study of in situ bending effects on incipient plastic deformation behavior of polycrystalline and single-crystalline pure aluminum and pure copper at ultranano depths (< 200 nm). We find that hardness displays a statistically inverse dependence on in-plane stress for indentation depths smaller than 10 nm, and the dependence disappears for larger indentation depths. In contrast, plastic noise in the nanoindentation force and displacement displays statistically robust noise features, independently of applied stresses. Our experimental results suggest the existence of a regime in Face Centered Cubic (FCC) crystals where ultranano hardness is sensitive to residual applied stresses, but plasticity pop-in noise is insensitive to it. View Full-Text
Keywords: nanoindentation; pop-in; crystal plasticity; hardness; avalanches; noise; face-centered cubic nanoindentation; pop-in; crystal plasticity; hardness; avalanches; noise; face-centered cubic
Show Figures

Figure 1

MDPI and ACS Style

Bolin, R.; Yavas, H.; Song, H.; Hemker, K.J.; Papanikolaou, S. Bending Nanoindentation and Plasticity Noise in FCC Single and Polycrystals. Crystals 2019, 9, 652.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop