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Mechanism of Si3N4 precipitation in nitrided Fe-Si alloys: A novel example of particle-stimulated-nucleation
- Source :
- Materials Letters, Materials Letters, Elsevier, 2017, 189, pp.25-27. ⟨10.1016/j.matlet.2016.11.064⟩, Materials Letters, 2017, 189, pp.25-27. ⟨10.1016/j.matlet.2016.11.064⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- International audience; Atom probe tomography (APT) was employed to investigate the precipitation process of Si3N4 particles after plasma assisted nitriding and subsequent annealing of Fe-Si alloy. The nitriding was done using 15N2 medium to enable quantitative analysis of Si and N by APT. Al, as a minor alloying element, is found to play an important role in the precipitation sequence. It is shown that Al forms Al-N clusters before Si3N4 precipitation takes place, and provides nucleation sites for the precipitation of Si3N4. Composition measurements show that silicon nitrides are enriched in Al, Ti and Mn as compared to the matrix.
- Subjects :
- Silicon nitride
Nitriding Steel
Materials science
Silicon
Annealing (metallurgy)
Alloy
Nucleation
chemistry.chemical_element
02 engineering and technology
Atom probe
Precipitation
Nitride
engineering.material
law.invention
chemistry.chemical_compound
law
General Materials Science
020502 materials
Mechanical Engineering
Metallurgy
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Atom probe tomography
0205 materials engineering
chemistry
Chemical engineering
Mechanics of Materials
engineering
0210 nano-technology
Nitriding
Subjects
Details
- Language :
- English
- ISSN :
- 0167577X
- Database :
- OpenAIRE
- Journal :
- Materials Letters, Materials Letters, Elsevier, 2017, 189, pp.25-27. ⟨10.1016/j.matlet.2016.11.064⟩, Materials Letters, 2017, 189, pp.25-27. ⟨10.1016/j.matlet.2016.11.064⟩
- Accession number :
- edsair.doi.dedup.....aa674bffc2b459d04a6aaff78feab386
- Full Text :
- https://doi.org/10.1016/j.matlet.2016.11.064⟩