Abstract
The dynamic recrystallization (DRX) microstructures were studied in a 304-type stainless steel deformed at temperatures from 1023 K to 1223 K and at a strain rate of about 10-3 s-1. Both the dynamic grain size and the dynamic subgrain size were shown to depend on deformation conditions, and they could be expressed by different power-law functions of flow stresses. The subgrain size was related to the flow stress with a size exponent of about -1.0, while the grain size exponent was about -0.7. With increasing the deformation temperature, the fraction of the high-angle grain boundaries against all the strain-induced (sub)boundaries decreased from about 70% at 1023 K to 40% at 1223 K. The deformation microstructures are discussed in some detail with reference to the mechanisms of microstructure evolution that operated upon DRX.
| Original language | English |
|---|---|
| Pages (from-to) | 1005-1010 |
| Number of pages | 6 |
| Journal | Materials Science Forum |
| Volume | 426-432 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 2003 |
| Event | Thermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, Spain Duration: Jul 7 2003 → Jul 11 2003 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering