Abstract
We measure the strain rate dependence of 0.2% offset yield stress in single-crystal nickel nanowires with diameters ranging from 80 to 300 nm. In situ tensile experiments with strain rates from 10-4 s-1 to 10-2 s-1 were conducted, and the small activation volume (∼10b3, where b is the Burgers vector length) and high strain-rate sensitivity (∼0.1) were obtained. These results agreed with atomistic simulations. Our work provides insights into the strength-limiting and rate-controlling mechanism of plasticity at the nanoscale. © 2013 American Institute of Physics.
| Original language | English |
|---|---|
| Article number | 83102 |
| Journal | Applied Physics Letters |
| Volume | 102 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 25 Feb 2013 |
Publisher's Copyright Statement
- COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Cheng Peng, Yuan Zhong, Yang Lu, Sankar Narayanan, Ting Zhu, and Jun Lou , "Strain rate dependent mechanical properties in single crystal nickel nanowires", Appl. Phys. Lett. 102, 083102 (2013) and may be found at https://doi.org/10.1063/1.4793481.