The Influence of Incoherent Particle Size on Defect Structure and Strength Properties of Disperse-hardened Aluminum Alloys

In this paper, the mathematical modeling is used to study the influence of the incoherent strengthening nanoparticles ranging from nano- to micron size on the formation and development of the defect structure of disperse-hardened crystalline aluminum alloy during plastic deformation. It is shown that the formation and accumulation of different dislocations in the shear zone are determined by mostly the size of the strengthening particles. It is found that the strength properties of the alloy containing strengthening microparticles, lower with the particle size increasing within one volume fraction.