Articles liés à Aluminium based nanocomposites: Metal Matrix Nanocomposites

Aluminium based nanocomposites: Metal Matrix Nanocomposites - Couverture souple

Mula, Suhrit; Pabi, S. K.; Ghosh, Sudipto

 
9783846542170: Aluminium based nanocomposites: Metal Matrix Nanocomposites
Couverture souple
ISBN 10 : 3846542172 ISBN 13 : 9783846542170
Editeur : LAP LAMBERT Academic Publishing, 2011

Synopsis

The phase evolution characteristics in the elemental blends of Al92Mn6Ce2, Al94.5Cr3Co1.5Ce1, Al87Y10Ni3 and Al88Ni9Ce2Fe1 compositions during mechanical alloying were studied. It was revealed that a wide variation of lattice parameter of Al-rich solid solutions in presence of similar level of surface and strain energy played a pivotal role in the amorphous phase formation by mechanical alloying. None of the aforesaid alloys resulted in a completely amorphous structure and hence, an attempt was made to consolidate the mechanically alloyed fully amorphous powder of Al88Ni6Ti6 composition to produce bulk Al-rich nanocomposites having densities near to the theoretical density. Consolidation was carried out by spark plasma sintering, hot pressing and conventional pressure-less sintering methods. The microstructural features and mechanical properties were also investigated for the ultrasonically cast nanocomposites of Al reinforced with nano-sized Al2O3 (average size ~10 nm) particles. Orowan mechanism predicted much higher yield strength than that observed in the present nanocomposites.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

The phase evolution characteristics in the elemental blends of Al92Mn6Ce2, Al94.5Cr3Co1.5Ce1, Al87Y10Ni3 and Al88Ni9Ce2Fe1 compositions during mechanical alloying were studied. It was revealed that a wide variation of lattice parameter of Al-rich solid solutions in presence of similar level of surface and strain energy played a pivotal role in the amorphous phase formation by mechanical alloying. None of the aforesaid alloys resulted in a completely amorphous structure and hence, an attempt was made to consolidate the mechanically alloyed fully amorphous powder of Al88Ni6Ti6 composition to produce bulk Al-rich nanocomposites having densities near to the theoretical density. Consolidation was carried out by spark plasma sintering, hot pressing and conventional pressure-less sintering methods. The microstructural features and mechanical properties were also investigated for the ultrasonically cast nanocomposites of Al reinforced with nano-sized Al2O3 (average size ~10 nm) particles. Orowan mechanism predicted much higher yield strength than that observed in the present nanocomposites.

Biographie de l'auteur

Presently, I am working as an Assistant Professor at National Institute of Technology, Rourkela, Orissa, India. I have been awarded PhD in March 2009. Presently, I have 29 publications in my possession. My research area is nanostructured alloys and/or composited and their stabilization.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2011
Langue
anglais
ISBN 10 
3846542172
ISBN 13 
9783846542170
Reliure
Broché
Nombre de pages
184
Coordonnées du fabricant
non disponible
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