Hot Consolidation of Aluminium and Aluminium nano-MMC Powders by Equal Channel Angular Pressing

• Main Authors: Lauri KOLLO, Kaspar KALLIP, Jaana-Kateriina GOMON, Lembit KOMMEL
• Format: Article
• Language: English
• Published: Kaunas University of Technology 2012-09-01
• Series: Medžiagotyra
• Subjects: aluminium; powder metallurgy; metal matrix composites; Equal Channel Angular Pressing
• Online Access: http://matsc.ktu.lt/index.php/MatSc/article/view/2431

In this work novel routes for consolidating aluminum powders via Equal Channel Angular Pressing (ECAP) are investigated. Furthermore, parameters were optimized for consolidating aluminium reinforced with nanoparticles <br /> (n-SiC) and nanofibers (Carbon nanotubes). Consolidating commercial purity aluminum powder with ECAP, approximately 60 % rise in hardness and strength were achieved compared to materials compacted by well established direct extrusion, at the same time losing about 2 times in ductility. Al-1 vol.% nano-SiC composites showed increase in hardness compared to composites consolidated by conventional methods.<p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.18.3.2431">http://dx.doi.org/10.5755/j01.ms.18.3.2431</a></p>