Abstract
The present paper examines the crystal orientation effects on the energy at the crack-tip of niobium/alumina joints. The analyses have been done using crystal plasticity theory. The single crystal parameters are identified for each family of slips system in [21]. These identified parameters are being used to examine the orientation effects of the niobium single crystal on the energy at the crack-tip. Differences in the fracture energy are explained based on the plastic slip (strain) induced in different slip systems during deformation. A qualitative comparison of the crystal plasticity analysis with the experiments of [4, 15] is also been presented.
Original language | English |
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Pages (from-to) | 67-78 |
Number of pages | 12 |
Journal | Computer Assisted Mechanics and Engineering Sciences |
Volume | 14 |
Issue number | 1 |
Publication status | Published - 11 Jun 2007 |
Keywords
- Crystal plasticity
- Finite element methods
- Fracture
- Metal-ceramic interface