Abstract
Ferritic-austenltic duplex steels demonstrate a complex deformational behavior even in the absence of mechanical loads. Purely thermal cycling in the temperature interval from 20°C to 900°C can cause either accumulation of inelastic strains (thermal ratchetting) or plastic shakedown, depending on microstructure morphology and/or the strength and thermal properties of the constituting phases. In this paper, a study is undertaken on duplex steel containing nitrogen, including experimental and theoretical analyses at microscopic and macroscopic levels. High-precision dilatometry and roughness measurements are accompanied by thorough numerical simulations based on different microstructural models.
| Original language | English |
|---|---|
| Pages (from-to) | 56-64 |
| Number of pages | 9 |
| Journal | Journal of Engineering Materials and Technology |
| Volume | 125 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2003 |