Abstract
Zeron 100 duplex stainless steel is susceptible to embrittlement following ageing at temperatures between 350 °C and 450 °C. The embrittlement is associated with cleavage of the age-hardened ferrite phase, initiated by deformation twinning. This can result in order of magnitude increases in the fatigue crack propagation rate. The effects of ageing on the mechanisms of fatigue crack propagation in Zero 100 are investigated, and a quantitative model is developed, accounting for the effects of hardness, temperature, stress level and microstructure on the fatigue crack growth rate. © 1994.
| Original language | English |
|---|---|
| Pages (from-to) | 91-101 |
| Number of pages | 11 |
| Journal | Materials Science and Engineering A |
| Volume | 183 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 15 Jun 1994 |
Keywords
- aging of materials
- crack propagation
- deformation
- embrittlement
- fatigue of materials
- ferrite
- hardness
- mathematical models
- metallographic microstructure
- stresses
- thermal effects
- twinning
- cleavage
- ferrite phase
- thermal aging
- Zeron 100 duplex steel
- ageing
- fatigue cracks
- stainless steel