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Dislocation density and flow stress modeling of nanostructured Al-SiC p composite during accumulative roll bonding

Kavosi, J ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.commatsci.2012.09.020
  3. Publisher: 2013
  4. Abstract:
  5. In order to investigate the dislocation structure and flow stress evolution of Al-SiCp composite during ARB process, a comprehensive model which describes the evolution of dislocation density is needed. Dislocation density, microstructure and flow stress evolution of Al-SiCp composite are predicted considering the ETMB model, strain and strain rate achieved from the mechanical model of ARB process and shear modulus calculated from the composite model. In addition, models' parameters such as dislocation generation parameters are modified due to the effect of SiC particles. The predicted results are in good agreement with experimental data
  6. Keywords:
  7. Composite model ; Dislocation density ; ETMB model ; Flow stress ; Accumulative roll bonding ; Al-SiCp ; ARB ; Composite models ; Comprehensive model ; Dislocation densities ; Dislocation generation ; Dislocation structures ; Mechanical model ; Nano-structured ; SiC particles ; Strain and strain rates ; Stress evolution ; Stress modeling ; Plastic flow ; Roll bonding ; Silicon carbide ; Strain rate ; Aluminum
  8. Source: Computational Materials Science ; Volume 67 , February , 2013 , Pages 359-363 ; 09270256 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0927025612005745