Abstract
Pulsed plasma nitriding (PPN) treatment is one of the new processes to improve the surface hardness and tribology behavior of austenitic stainless steels. Through low temperature treatment (<440 °C), it is possible to obtain unique combinations of wear and corrosion properties. Such a combination is achieved through the formation of a so-called "extended austenite phase" These surface layers are often also referred to as S-phase, m-phase or γ-phase. In this work, nitrided layers on austenitic stainless steels AISI 316L (SS316L) were examined by means of a nanoindentation method at different loads. Additionally, the mechanical properties of the S-phase at different depths were studied. Electron back-scatter diffraction (EBSD) examination of the layer showed a high amount of plasticity induced in the layer during its formation. XRD results confirmed the formation of the S-phase, and no deleterious CrN phase was detected.
| Original language | English |
|---|---|
| Pages (from-to) | 425-434 |
| Number of pages | 10 |
| Journal | Materials Science and Engineering: A |
| Volume | 529 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 25 Nov 2011 |
| Externally published | Yes |
Keywords
- Austenite
- EBSD
- Microanalysis
- Nanoindentation
- Pulsed plasma nitriding
- Stainless steel 316L
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