Challenges in Manufacturing Aluminium Based Metal Matrix Nanocomposites via Stir Casting Route

Abstract:

The influence of material processing conditions for preparing aluminium based metal matrix nanocomposites through stir casting route is reviewed. The role of particle size with respect to Brownian motion, Stokes settling velocity and strengthening mechanism is assessed from theoretical understandings. Variation of microstructural features and mechanical properties of the nanocomposites are predicted from theoretical concepts and related mathematical models. Experiments conducted to validate the theoretical predictions show that both Orowan and grain refinement strengthening mechanisms remain operative which is the key to the improved strength property of the nanocomposites.

• Periodical: Materials Science Forum (Volume 736)
• Pages: 72-80
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.736.72
• Online since: December 2012
• Authors: Subhranshu Chatterjee, Amitava Basu Mallick
• Keywords: Critical Particle Size, Grain Refinement, Nanocomposite, Orowan Strengthening, Solidification Front Velocity

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