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A plastic-yield compaction model for nanostructured Al6063 alloy and Al6063/Al2O3 nanocomposite powder

Asgharzadeh, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.powtec.2011.04.020
  3. Abstract:
  4. A modified plastic yield function is proposed to predict the consolidation behavior of nanostructured metal powders and metal-matrix nanocomposite powders under uniaxial compaction. The validity of the model is verified for nanocrystalline Al6063 (~100nm) alloy reinforced without and with 0.8vol.% Al2O3 nanoparticles (~25nm). The plastic deformation propensity of these powders is analyzed by linear compaction equations. The yield stress of the powder compacts is shown to be influenced by the nano-scale grains and the reinforcement nanoparticles
  5. Keywords:
  6. Mechanical alloying ; Modeling ; Nanocomposite ; Nanostructured materials ; Powder consolidation ; Compaction models ; Modified plastics ; Nano scale ; Nano-structured ; Nanocomposite powder ; Nanocrystallines ; Nanostructured metals ; Powder compacts ; Uniaxial compaction ; Compaction ; Metallic matrix composites ; Nanocrystalline alloys ; Nanoparticles ; Polymer matrix composites ; Powder metals ; Yield stress ; Nanocomposites ; Aluminum ; Aluminum oxide ; Nanomaterial ; Nanostructured metal powder ; Unclassified drug ; Compression ; Controlled study ; Density ; Mechanical torsion ; Particle size ; Physical phenomena ; Plastic yield function ; Porosity ; Prediction ; Validity
  7. Source: Powder Technology ; Volume 211, Issue 2-3 , 2011 , Pages 215-220 ; 00325910 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0032591011002038