Abstract
Abstract The nano/ultrafine grained stainless steel promoted the form of more deformation nanotwins and inhibited dislocation slip and strain induced α′-martensite transformation during deformation compared with coarse grained stainless steel. The diffusivity of the point defects in passive film in coarse grain stainless steel was lower than that in nano/ultrafine one. The corrosion resistance of nano/ultrafine grained stainless steel was improved by reducing content of strain induced α′-martensite. Moreover, the donor and acceptor densities in passive film formed on the stainless steel increased due to more strain induced α′-martensites and more chloride ions. Fewer strain induced α′-martensites and more nanotwins in nano/ultrafine grained stainless steel improved its corrosion resistance.
| Original language | English |
|---|---|
| Article number | 8287 |
| Pages (from-to) | 896-907 |
| Number of pages | 12 |
| Journal | Materials Research Bulletin |
| Volume | 70 |
| DOIs | |
| Publication status | Published - 2015 Jul 3 |
| Externally published | Yes |
Keywords
- Electrochemical properties
- Microstructure
- Nanostructures
- Phase transitions
- X-ray diffraction
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering