Abstract
Experiments to measure the effect of hardening on the plastic deformation field near a notch tip in metallic single crystals were conducted. The specimens were cut from pure Cu and a CuBe alloy (with 1.8-2.0 wt% Be) FCC single crystals. The Cu-2.0wt%Be alloy was selected because its initial hardness and rate of hardening can be modified by heat treatment. The Vickers hardness of the specimens ranged from 87 to 353 kg/mm2, while the hardening exponents ranged between 10 and 4.5. The experimental results were compared to analytical and numerical solutions from the literature. This comparison shows that the inclusion of elastic regions in the analytical solutions and anisotropic hardening in the numerical solutions results in better agreement with the experiments.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1623-1647 |
| Number of pages | 25 |
| Journal | Journal of the Mechanics and Physics of Solids |
| Volume | 51 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2003 |
Bibliographical note
Funding Information:The authors acknowledge the support of the National Science Foundation (grant number MSS-9257945-2). WCC also gratefully acknowledges the support of a Dissertation Fellowship from the American Association of University Women and an Amelia Earhart Fellowship from Zonta International. Portions of this research were conducted in the University of Minnesota Center for Interfacial Engineering, University of Minnesota Microtechnology Laboratory, and the crystal growth facility of Prof. R.D. James.
Keywords
- A: Fracture mechanics
- Fracture
- Single crystal