RT Journal Article
T1 Optimisation of mechanical milling process for production of AA 7075/(SiC or TiB₂) composite powders
A1 Jabbari Taleghani, Mohammad Ali
A1 Ruiz Navas, Elisa María
A1 Salehi, M.
A1 Torralba Castelló, José Manuel
AB The present work concerns the processing of composite powders based on 7075 aluminium alloy by mechanical milling. A premixed powder (Alumix 431D, Ecka Granules, Germany) was used as the matrix material, and two different ceramic reinforcements (SiC and TiB₂) were chosen as reinforcements. The main objective was to evaluate the effect of the content and addition method of the process control agent as well as the content and type of reinforcement on the microstructural and morphological evolutions of the powder particles during milling process and the as milled properties of the processed materials. Results showed that regardless of the starting composition, alloying took place through three stages, in which deformation, cold welding and fracturing of powder particles were the main mechanisms involved respectively. The mechanically milled composite powders showed a fine and homogenous distribution of reinforcement particles. A higher content of reinforcement resulted in a lower crystalline size for the milled powders (∼18 nm for composite powders containing 15 vol.-% ceramic particles).
PB Maney Publishing
SN 0032-5899 (print)
SN 1743-2901 (Online)
YR 2012
FD 2012-09
LK https://hdl.handle.net/10016/20536
UL https://hdl.handle.net/10016/20536
LA eng
NO The authors would like to thank the Comunidad de Madrid for their financial support of this work through the ESTRUMAT grant no. S2009/MAT-1585.
DS e-Archivo
RD 19 may. 2024