Nano-bulk aluminum fabrication from nano powder mixed with micro powder by explosive consolidation
Zi Wang, Song Guo, Chenchen Li, Bin Li, Ziwen Gao
Abstract
Explosive Consolidation Method has unique advantages with well prospects in the preparation and processing of bulk materials. In this paper, self-designed structure was employed to study the influence of the mass ratio of nano aluminum powder to aluminum powder on the mechanical properties of nano-bulk aluminum material prepared by explosive consolidation. And the mechanical properties and microstructure of prepared nano-bulk aluminums under various conditions were compared and evaluated based on FMCE method. The results show that for processing single nano-powder through explosion consolidation, hardly any Al powder can be oxidized into Al2O3, and the particle size can still remain at the nanometer order of magnitudes; with the increase from 0 to 100% of the proportion of nano-aluminum powder, the hardness and the compressive strength of nano-bulk aluminums increases, and the density decreases firstly, followed by subsequently increases; and nano-bulk materials prepared by single nano-powder have optimal performance by ranking the comprehensive scores of nano-bulk aluminum materials prepared by explosive consolidation under 6 conditions.