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References

Articles:

Belmonte, T., Henrion, G. and Gries, T.
Journal of Thermal Spray Technology, 20:744-759
2011

Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS

Negulescu, B., Lacour, D., Hehn, M., Gerken, A., Paul, J. and Duret, C.
Journal of Applied Physics, 109(10)
2011

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

Petrisor, T., Gabor, M.S., Boulle, A., Bellouard, C., Tiusan, C., Pana, O. and Petrisor, T.
Journal of Applied Physics, 109(12)
2011

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

Grigorieva, Raisa, Drillett, Pascal, Mataigne, J. -M. and Redjaïmia, A.
Solid State Phenomena, 172-174(Part 1):784-790
2011
ISSN: 1012-0394

Resume: Nowadays more and more hot stamped steel sheets dedicated for the automotive body-in-white structure are pre-coated to prevent the steel surface against iron oxidation and decarburization during the austenitization step. For these applications, the coating is deposited by continuous hot-dipping the steel in an Al-Si bath. The Al-Si coating, at the delivery state, contains Al-grains, Al-Fe-Si ternary phases, Al-Fe binary phases. During the austenitization, the Al-Si coating transforms completely by inter-diffusion and solidification reactions. The mechanisms of Al-Fe-Si phase transformations at high temperature are almost unknown. The phase transformations occurring during austenitization define the final coating microstructure responsible for the in use properties of the product like spot welding, painting adherence or corrosion behavior. It is the aim of this paper to propose a new way of understanding the mechanisms of phase transformation in the Al-Si coating during the austenitization step (between 900 and 930 degrees C) before the transfer into the hot-stamping press.

Equipe: Département SI2M : Microstructures et Contraintes

Settefrati, A., Aeby-Gautier, E., Dehmas, M., Geandier, G., Appolaire, B., Audion, S. and Delfosse, J.
Solid State Phenomena, 172-174(Part 1):760-765
2011
ISSN: 1012-0394

Resume: In the present study we focus on the precipitation processes during heating and ageing of beta-metastable phase in the near beta Ti-5553 alloy. Transformation processes have been studied using continuous high energy X-Ray Diffraction (XRD) and electrical resistivity for two different states of the beta-metastable phase. Microstructures have been observed by electron microscopy. Different transformation sequences are highlighted depending on both heating rate and chemical composition of the beta-metastable phase. At low temperatures and low heating rates, the hexagonal omega(iso) phase is first formed as generally mentioned in the literature. Increasing the temperature, XRD evidences the formation of an orthorhombic phase (alpha"), which evolves toward the hexagonal pseudo compact alpha phase. For higher heating rates or for richer composition in beta-stabilizing elements of the beta-metastable phase, omega phase may not form and alpha" forms directly and again transforms into alpha phase. A direct transformation from beta-metastable to alpha phase is observed for the highest heating rate. The formation of the metastable omega(iso) and alpha" phases clearly influences the final morphology of alpha.

Equipe: Département SI2M : Microstructures et Contraintes

ZHOU, T., LENOIR, B., COLIN, M., DAUSCHER, A., AL RAHAL AL ORABI, R., GOUGEON, P., POTEL, M. and GUILMEAU, E.
Appied physics letters, 98:162106
2011

Equipe: Département CP2S : Matériaux à propriétés thermoélectriques

Addou, R., SHUKLA, A. K., de Weerd, M.C., Gille, P., Groening, O., Fournee, V., Dubois, J. M. and Ledieu, J.
J. Phys. Condens. Mat., 23:435009
2011
ISSN: 0953-8984

Equipe: Département CP2S : Métallurgie et Surfaces

Schierning, G., Theissmann, R., Stein, N., Petermann, N., Becker, A., Engenhorst, M., Kessler, V., Geller, M., Beckel, A., Wiggers, H. and Schmechel, R.
Journal of Applied Physics, 110(11)
2011

Equipe: Département CP2S : Chimie et électrochimie des matériaux

Mitoraj, M., Godelewska, E., HEINTZ, O., Geoffroy, N., Fontana, S. and Chevalier, S.
Intermetallics, 19:39-47
2011

Equipe: Département CP2S : Matériaux Carbonés

Brandt, C., Grulke, O., Klinger, T., J. Negrete, J. Negrete, Bousselin, G., Brochard, F., Bonhomme, G. and Oldenburger, S.
Physical Review E, 84:056405 (9 pages)
2011

Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS

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