Abstract
Experimental results are presented on subcritical crack growth under sustained and cyclic loads in gas pressure sintered α-β-sialon at 1200°C. High temperature subcritical crack growth behavior is examined by application of controlled surface cracking technique from Vickers indentations in bars loaded in 4-point bending. Electron microscopy analysis in the crack-tip damage zone indicates that creep mechanisms such as cavity formation are responsible for static fatigue and dislocation plasticity may play a certain role in high temperature cyclic fatigue fracture.
| Original language | English |
|---|---|
| Pages (from-to) | 257-262 |
| Number of pages | 6 |
| Journal | Key Engineering Materials |
| Volume | 159-160 |
| State | Published - 1999 |
| Externally published | Yes |
Keywords
- Fatigue Crack Growth
- High Temperature
- α-β-Sialon