Frédéric Claude Denis Dreyer
MissionSTUDY AND MODELLING OF VARIOUS DENDRITE MORPHOLOGIES IN ALUMINIUM ALLOYS
Aluminium having a weak anisotropy of the solid-liquid interfacial energy (about 1%), dendrites are not very well constrained to grow along the <100> crystallographic directions, characteristic of fcc metals. Zinc on the other hand is strongly anisotropic with dendrites growing faster in the basal plane along <1010> directions. The Al-Zn phase diagram is such that the fcc primary phase forms up to very high concentration of Zn (about 95 wt%). The goal of the project is to study the influence of zinc on the growth directions of fcc Al dendrites.
The financial support for this project is given by the SNF (financial support n° 200021-105144).
EPFL Computational Materials Laboratory (LSMX)
Study and modelling of various dendrite morphologies in aluminium alloys.
Growth directions in Al-Zn alloys.
Financial support : SNF n° 200021-105144.
Follow-up of 3rd year semester projects,assisting of 2nd year Continuum Mechanics and teaching 1st year practical works.
Post-graduate qualification which is a prerequisite for PhD candidates (DEA): materials engineering: microstructure, mechanical behaviour, durability triple seal Ecole Centrale de Lyon (ECL),instituts Nationaux des Sciences Appliquées (INSA)and Université Claude Bernard Lyon1 (69).
Engineering diploma channel Multi Matériaux et Interfaces. Institut des Sciences et Techniques de lIngénieur de Lyon ISTIL.
Technical university Diploma Physical Measurement option Materials and Physico-chemical control (IUT dAnnecy-le-Vieux (74)).
First-year math class for candidates for the Grandes Ecoles (high school La Martinière Monplaisir Lyon(69)).
obtaining of the secondary school examination qualifying for entry to university (Scientific Baccalauréat option mathematics (high school St-MICHEL in Annecy(74)).
Training course at ROLEX SA engineering level bracelets R&D district: mechanical and metallographic characterization of clasps watches precious material,study of fatigue of tinning material.
Training course ROLEX SA engineering level bracelets R&D district experience plan with 9 parameters.
MAI/JUIN 2003 :
Training course engineering level at CNRS de Lyons at the laboratory of polymer and biomaterial.
JANVIER 2002 :
Training course laboratory technician level at THERMOCOMPACT SA: improvement of manufacturing process of electro erosion wire.
Training course laboratory technician level at BAIKOWSKI CHIMIE SA,improvement and development of control process instrument concerning the manufacturing ultra-pure alumina powder, study of sintering phenomena.
JUILLET 99/2000 :
Private lessons in physical sciences, maths and foreign language (English Spanish) to student at high school level.
CONFERENCES M. Rappaz and F. Gonzales, Dendrite Growth directions in Al-Zn alloys, Symposium on solidification Modeling and Microstructure Formation, A symposium In Honor of Professor John Hunt, TMS annual conf. 2006, San Antonio, USA (2006).
F. Gonzales, Dendrite Growth directions in Al-Zn alloys, 2nd doctoral day EPFL, Lausanne, Switzerland (2006).
F. Gonzales, E. Boehm, A. Jacot, F. Kohler, A. Mariaux, C. Niederberger, M. Salgado, and M. Rappaz, EBSD : A powerful Microstructure Analysis Technique in the Field of Solidification, Electron Backscatter Diffraction Meeting, a meeting in Honor of Professor David Dingley, Glasgow, UK (2007).
Sélection de publications
|TOMORR HAXHIMALI, ALAIN KARMA, FR�D�RIC GONZALES and MICHEL RAPPAZ
Nature Materials, Vol. 5, August 2006
|Orientation selection in dendritic evolution|
|FR�D�RIC GONZALES and MICHEL RAPPAZ
Metallurgy and Transaction A, volume 37A, September 2006
|Dendrite Growth Directions In Aluminum-Zinc Alloys|
|M. Rh�me, F. Gonzales and M. Rappaz
Scripta Materialia,Received 14 March 2008; revised 11 April 2008; accepted 14 April 2008. Available online 24 April 2008
|Growth directions in directionally solidified Al-Zn and Zn-Al alloys near eutectic composition.|
|Fr�d�ric Gonzales and Michel Rappaz
Metallurgical and Materials Transactions A, 22 mai 2008
|Grain Selection and Texture Evolution in Directionally Solidified Al-Zn Alloys.|