Analysis of Relaxation Processes in HNS Due to Interstitial-Substitutional Pairs
Abstract
:1. Introduction
2. Material and Experimental
3. Results and Discussion
3.1. As-Prepared Steel
- The increased density of free electrons due to nitrogen atmospheres near dislocations decreases the stress for activating dislocation sources and the line tension, thus nitrogen causes the early start of plastic deformation and increases dislocation mobility. The effect of carbon on plasticity is the opposite.
- Nitrogen does not segregate substantially at grain boundaries, hence HNS exhibit good toughness and excellent resistance to intercrystalline corrosion, because the precipitation of chromium nitride at grain boundaries is very low when compared to that of chromium carbides.
3.2. Heat Treated Steel
4. Conclusions
Author Contributions
Conflicts of Interest
References
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Material | N-Mn in γ Phase | C-Mn in γ Phase | N-Mn in γ* Phase | Total Area |
---|---|---|---|---|
As-prepared | 0.5870 | 0.4130 | - | 1.000 |
Heat treated 2 h/800 °C | 0.2724 | 0.1941 | 0.1571 | 0.6236 |
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Fava, A.; Montanari, R.; Richetta, M.; Varone, A. Analysis of Relaxation Processes in HNS Due to Interstitial-Substitutional Pairs. Metals 2017, 7, 246. https://doi.org/10.3390/met7070246
Fava A, Montanari R, Richetta M, Varone A. Analysis of Relaxation Processes in HNS Due to Interstitial-Substitutional Pairs. Metals. 2017; 7(7):246. https://doi.org/10.3390/met7070246
Chicago/Turabian StyleFava, Alessandra, Roberto Montanari, Maria Richetta, and Alessandra Varone. 2017. "Analysis of Relaxation Processes in HNS Due to Interstitial-Substitutional Pairs" Metals 7, no. 7: 246. https://doi.org/10.3390/met7070246