Paper Title:
Use of WEDM in the Characterization Process of Al/2-Phase Systems Consolidated by Multilayer Cylindrical Dynamic Compaction Method
  Abstract

The aim of this paper is to present an exploratory process to characterize fabricated 2-phase aluminum metal-matrix systems (2-phase systems) by using a dynamic consolidation technique, with an arrangement of multilayer mixings in steel cylinders. Aluminum powder (~150mm) was mechanically mixed with different fractions of multi-wall carbon nano-tubes (MWCNTs, 2 and 5 percent), with ~30 nm and ~30 μm diameter SiC and Al 2 O 3 powders (in volume fractions of 2, 4, and 21 percent), then, were green compacted uniaxially to ~80 % density, to be finally explosively consolidated with ammonium nitrate-fuel oil (ANFO) and C3. After compaction, WEDM (wire electrical discharge machining) was used to prepare tensile and hardness testing samples, also TEM, light microscopy and SEM characterization samples, all by using ~25 % of the obtained material , this represents less than 10cc , preserving ~60 % of the obtained monoliths. Densities of the consolidated monoliths achieve an average of ~98 % compaction (measured by Archimedes technique). Observations and measured hardness (HRE) reveal well compacted systems with a hardness consistent along the composites. Using light microscope imaging different zones were identified showing different grain behaviors.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1541-1546
DOI
10.4028/www.scientific.net/MSF.546-549.1541
Citation
N. G. Alba-Baena, L. E. Murr, A. Loya-Puga, W. Salas, "Use of WEDM in the Characterization Process of Al/2-Phase Systems Consolidated by Multilayer Cylindrical Dynamic Compaction Method", Materials Science Forum, Vols. 546-549, pp. 1541-1546, 2007
Online since
May 2007
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