INTECIN   20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
A study on the mechanical behavior of novel Al based metal matrix complex nanocomposites
Autor/es:
M. GALANO; F. AUDEBERT; N. ROUNTHWAITE; J. XIA
Lugar:
Turin
Reunión:
Congreso; XX International Symposium on Metastable, Amorphous and Nanostructured Materials; 2013
Resumen:
Automotive and Aerospace sectors have been demanding the development of revolutionary light weight alloys that can achieve a high strength at elevated temperatures for several years. However nowadays due to the tighter restrictions for carbon emissions the industrial needs request new alloys or composites that achieve improvements of combined properties such as light weight, strength with temperature toughness, stiffness etc. The present work is based on the development of novel Aluminium alloys matrix nanocomposites with combinations of reinforcement strategies at the nanoscale to target specific applications. Different materials have been used as nanoreinforcements or plasticizers for improving targeted properties of nanostructured Al-based alloys such as nanosize quasicrystalline and ceramic particles and pure metals. Several powder metallurgy techniques have been applied in the manufacturing of the different nanocomposites particularly the ones containing ceramic reinforcements were processed using ball milling techniques. Composites were manufactured by plastic deformation processes such as extrusion and in some cases followed by rolling. The extrusion process on the nanocomposites containing plasticizers produces anisotropic composites with ductile fibres which improve ductility and toughness. Subsequent rolling has shown the enhancement of the strengthening properties of simple composites. The structural characterization was performed using XRD including texture XRD, electron microscopy techniques SEM and TEM combined with EBSD and EDX. Complimentary, calorimetric analysis has been used in order to study the microstructural stability. The mechanical behaviour of the different nanocomposites has been studied and compared to high strength commercial Al alloys achieving a template of nanocomposites with an improved combined behaviour of mechanical properties as a function of the processing method.