Study of characteristics of Al + 5 wt.% TiO₂ + 6 wt.% Gr hybrid p/m composite powders prepared by ball milling process

• Main Authors: Ravichandran, M., Vidhya, VS., Anandakrishanan, V.
• Format: Article
• Language: English
• Published: Фізико-механічний інститут ім. Г.В. Карпенка НАН України 2015
• Series: Фізико-хімічна механіка матеріалів
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/136252

This paper is an attempt to understand the characteristics of Al + TiO₂ + Gr hybrid ball milled composite powders, which is anticipated to have large application in the near future. Aluminium with titanium dioxide (TiO₂) and graphite (Gr) powders was ball milled in order to yield the composition like: Al + 0% TiO₂, Al + 5% TiO₂, Al + 5% TiO₂ + 2% Gr, Al + 5% TiO₂ + 4% Gr and Al + 5% TiO₂ + 6% Gr. From the X-Ray diffraction analysis of the milled powders, the grain size, lattice space, lattice constant, stress, strain, dislocation density and unit cell volume were calculated. Compressibility was performed in a hardened steel die at pressures between 100 to 500 MPa to determine Al with 5 wt.% TiO₂ and 2 & 4 wt.% of Gr powder mixtures. For understanding of compaction behavior of aluminum based hybrid composites reinforced with TiO₂ and Gr particles under various applied pressure conditions, experimental research has been made using several powder compaction equations. Microstructure analysis for Al + 5% TiO₂ + 6% Gr composite has been reported.