Nanoparticles Distribution and Elastic Modulus of AZ31/Al2O3 Nanocomposites Fabricated by Friction Stir Processing

The aim of this paper is to fabricate AZ31/Al2O3 nanocomposites by friction stir processing (FSP). Due tosevere plastic deformation, dynamic recrystallization, and grain growth retardation by nanoparticles during the FSPprocessing, grain refining with homogeneous distribution of the nanoparticles were occured. With increasing rotationalspeed, as a result of the increased plastic deformation and heat generation, increased grain size of the matrix, andsimultaneously shattering effect of rotation cause a uniform nanoparticle distribution. Also, due to nanoparticlesaddition, the elastic modulus was increased.

Keywords:

Nanocomposite , Friction stir processing , Mg alloy , Microstructure