Publications de Yves Conde | EPFL Graph Search

Influence of microstructural heterogeneity on the scaling between flow stress and relative density in microcellular Al-4.5 %Cu

We explore the influence of the metal microstructure on the compressive flow stress of replicated microcellular 400-mu m pore size Al-4.5 wt%Cu solidified at two different solidification cooling rates, in the as-cast and T6 conditions. It is found that the ...

Springer Verlag2014

Scaling of conductivity and Young’s modulus in replicated microcellular materials

Andreas Mortensen, Yves Conde, Andreas Rossoll

Scaling exponents for the conductivity and stiffness of replicated microcellular materials exceed commonly predicted values of 1 and 2. We show here that this is caused by the fact that, in replicated microcellular materials, the solid architecture varies ...

Springer US2013

Solidification of Al-4.5 wt pct Cu-Replicated Foams

Andreas Mortensen, Yves Conde

Microcellular Al-4.5 wt pct Cu of 400- or 75-mu m average pore diameter is solidified at cooling rates ranging from -30 K/min to -0.45 K/min (-30 A degrees C/min to -0.45 A degrees C/min). In the 400-mu m pore size samples, the dendritic character is lost, ...

2010

Micro-, meso- and macrostructures in replicated microcellular aluminium

Yves Conde

This thesis is focused on the properties of microcellular aluminium, produced by replication processing, at the micro, meso and macrostructural level. The replication process is based on the infiltration of a porous sodium chloride (NaCl) perform with molt ...

EPFL2009

Uniaxial deformation of microcellular metals: model systems and simplified analysis

Jean-François Despois, Randoald Müller, Andreas Mortensen, Yves Conde, Etienne Combaz, Frédéric Diologent, Sébastien Philippe Soubielle

Microcellular aluminium can be produced by a process known as replication; this involves the infiltration of a packed bed of NaCl particles which are subsequently leached after metal solidification. The resulting material features a uniform distribution of ...

Springer2009

Microstructure, Strength and Creep of Aluminium-nickel Open Cell Foam

Andreas Mortensen, Yves Conde, Frédéric Diologent

Al-6.4 wt% Ni open-cell foams produced by replication are tested in compression and in tension at room temperature and creep tested in tension at 450C. The mechanical behaviour of this foam at room temperature is consistent with that observed for other ope ...

2009

Age-Hardening Response of Replicated Microcellular Al-4.5%Cu

Andreas Mortensen, Yves Conde

We study the response to age hardening of Al-4.5%Cu replicated foams with 75 and 400 pm cell sizes and with varying relative densities. The 400 mu m cell size foams have a similar behavior to the bulk alloy, whereas the 75 pm cell size foams with relative ...

Destech Publications, Inc, 439 Duke Street, Lancaster, Pa 17602-4967 Usa2008

Yves Conde

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Influence of microstructural heterogeneity on the scaling between flow stress and relative density in microcellular Al-4.5 %Cu

Scaling of conductivity and Young’s modulus in replicated microcellular materials

Solidification of Al-4.5 wt pct Cu-Replicated Foams

Micro-, meso- and macrostructures in replicated microcellular aluminium

Uniaxial deformation of microcellular metals: model systems and simplified analysis

Microstructure, Strength and Creep of Aluminium-nickel Open Cell Foam

Age-Hardening Response of Replicated Microcellular Al-4.5%Cu

Age-hardening Response of Replicated Microcellular Al-4.5%Cu

Replication processing of highly porous materials

Functional grading of metal foam cores for yield-limited lightweight sandwich beams

Graded open-cell aluminium foam core sandwich beams