Strain rate dependent mechanical properties in single crystal nickel nanowires
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 25, 2013
- Source ID
- 10.1063/1.4793481
Entities
People
- Cheng Peng
- Jun Lou
- Sankar Narayanan
- Ting Zhu
- Yang Lu
- Yuan Zhong
Organizations
- Air Force Office of Scientific Research
- City University of Hong Kong
- Georgia Tech
- National Science Foundation
- Rice University