Study of influence of aluminum nitride nanoparticles on the structure, phase composition and mechanical properties of AZ91 alloy

In this work, magnesium-based composites were obtained by shock-wave compaction of a powder mixture of Mg-5 wt.% AlN at a shock-wave pressure of 2 GPa. Their microstructure was investigated and the phase composition was determined, from which it follows that the nanoparticles retain their phase composition and are uniformly distributed in the magnesium matrix. The materials obtained by shock-wave compaction were used as master alloys for the production of magnesium alloys by die casting. The amount of aluminum nitride nanoparticles in the AZ91 magnesium alloy was 0.5 wt.%. Studies of the microstructure of the magnesium alloys showed a decrease in the average grain size of the magnesium matrix from 610 to 420 m. Studies of mechanical properties have shown that the introduction of aluminum nitride nanoparticles increases the yield strength from 55 to 119 MPa, the tensile strength from 122 to 171 MPa and the plasticity from 4 to 6.5%, respectively. The effect of nanoparticles on the fracture behavior of the magnesium alloy under tension was determine

Study of the effect of diamond nanoparticles on the structure and mechanical properties of the medical Mg–Ca–Zn magnesium alloy

The paper addresses the production and investigation of the Mg–Ca–Zn alloy dispersionhardened by diamond nanoparticles. Structural studies have shown that diamond nanoparticles have a modifying effect and make it possible to reduce the average grain size of the magnesium alloy. Reduction of the grain size and introduction of particles into the magnesium matrix increased the yield strength, tensile strength, and ductility of the magnesium alloy as compared to the original alloy after vibration and ultrasonic treatment. The magnesium alloy containing diamond nanoparticles showed the most uniform fracture due to a more uniform deformation of the alloy with particles, which simultaneously increased its strength and ductilit

The influence of the Al3Er intermetallic compound on the structure, physicomechanical characteristics and fracture of the A–0359.0 alloy

In this work, we studied the effect of the intermetallic compound Al3Er on the structure of the aluminum alloy A–0359.0, its physical and mechanical properties and the nature of destruction. It was shown that the introduction of 0.3 wt. % into the melt A–0359.0 reduces the average size of dendrites and microhardness values, does not affect the density and hardness values, and increases the values of tensile strength and maximum deformations before fracture. The investigated alloys demonstrate a similar deformation behavior, while the fracture surface of the A–0359.0 alloy containing 0.3 wt. % Er, is significantly developed in comparison with the initial alloy

Influence of tungsten nanoparticles on the structure and mechanical behavior of AA5056 under quasi-static loading

The paper investigates the effect of tungsten nanoparticles on the structure and mechanical properties of aluminum 5056 alloy. Using optical and scanning electron microscopy, the structure of the AA5056-W composite and the initial alloy is investigated. Introduction of 0.5 wt. % of tungsten nanoparticles does not modify the structure of the aluminum alloy, but due to dispersed hardening, it can increase the hardness and the values of the yield stress, ultimate tensile strength, and maximum deformations before fracture of the metal matrix. The Orowan mechanism prevails in increasing the machinical properties of aluminum 5056 alloy with dispersed hardening with tungsten nanoparticles. The destruction of materials is caused by the uneven distribution of tungsten nanoparticles in the aluminum matrix