Articles: | |
---|---|
• |
Solid State Phenomena,
172-174(Part 1):493-498
2011
ISSN: 1012-0394
Resume: Superaustenitic stainless steels exhibit excellent corrosion resistance, at a wide variety of exposure temperatures, especially in chloride containing environments, coupled with desirable mechanical properties. Previous studies have shown that these steels are prone to precipitation of secondary phases, such as sigma phase (sigma), chi phase (chi). Laves-phase, carbides, nitrides or secondary austenite, when exposed at elevated temperatures, directly affecting their mechanical properties and corrosion behaviour. A detailed study of the effect of isothermal ageing on the microstructure of S32654 (Fe-24Cr-21Ni-7Mo-0.5N-0.013C) and S31254 (Fe-20Cr-18Ni-6Mo-0.2N-0.012C) superaustenitic stainless steels was carried out. Samples were aged within the temperature range of 650 degrees C to 950 degrees C for times up to 3000 h. Following ageing, precipitation of secondary phases was clearly observed with precipitates varying in volume fraction, size, shape and spatial distribution. Several secondary phases were identified via transmission electron microscopy (TEM) and electron diffraction (ED). The orientation relationships between the austenitic matrix and the secondary phases were identified. Interaction and also phase transformation among different types of precipitates, such as between precipitates and the austenitic matrix were observed and an attempt of understanding these phase transformations was carried out. Equipe: Département SI2M : Microstructures et Contraintes |
• |
PHYSICAL REVIEW B,
84(20)
2011
ISSN: 1098-0121
Equipe: Département P2M : Surfaces et Spectroscopies |
• |
Matériaux et Techniques,
99(5):573-580
2011
Equipe: Département CP2S : Matériaux pour le Génie Civil |
• |
European Journal of Inorganic Chemistry,
8:1315-1321.
2011
Equipe: Département CP2S : Surface et Interface, réactivité chimique des matériaux |
• |
Surface & Coatings Technology,
205:S443-S446
2011
Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS |
• |
Solid state sciences,
13(7):1438-1442.
2011
Equipe: Département CP2S : Surface et Interface, réactivité chimique des matériaux |
• |
Physical Review B - Condensed Matter and Materials Physics,
84(10)
2011
Equipe: Département P2M : Nanomagnétisme et Electronique de Spin |
• |
GSI Scientific Report,
PNI-MR-33:401
2011
Equipe: Département CP2S : Chimie et électrochimie des matériaux |
• |
Biomass and bioenergy,
35:1954-1959
2011
Equipe: Département CP2S : Matériaux Carbonés |
• |
Biomass and bioenergy,
in press
2011
Equipe: Département CP2S : Matériaux Carbonés |