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 . 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.
|Number of pages||12|
|Journal||Computer Assisted Mechanics and Engineering Sciences|
|Publication status||Published - 11 Jun 2007|
- Crystal plasticity
- Finite element methods
- Metal-ceramic interface