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<p>The effect of reinforcement with titanium diboride (TiB<sub>2</sub>) nanoparticles with an average size of 80 nm on the mechanical properties of AZ91D magnesium alloy was studied. The reinforcing TiB<sub>2</sub> particles in an amount of 0.5 and 1.5 wt.% were introduced through the stir-casting process. Microstructural analysis and static tensile tests were performed to evaluate the effect of reinforcing the AZ91D alloy with TiB<sub>2</sub> nanoparticles. It was found that the addition of TiB<sub>2</sub> nanoparticles significantly improves the mechanical properties of the AZ91D alloy. The ultimate tensile strength increases by 3% for the composite with 0.5 wt.% TiB<sub>2</sub> and by 10% for the composite with 1.5 wt.% TiB<sub>2</sub> compared to the unreinforced alloy. The yield strength also increases by 5% and 14% for the composites with 0.5 and 1.5 wt.% TiB<sub>2</sub>, respectively. In addition, the microhardness is significantly increased by adding TiB<sub>2</sub>. The results obtained showed that reinforcing the magnesium alloy AZ91D with TiB<sub>2</sub> nanoparticles increases the efficiency of its use for the manufacture of massive engineering constructions.</p>

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Effects of TiB2 Nanoparticles on the Microstructure and Mechanical Properties of AZ91D Magnesium Alloy Processed Through Stir Casting Technique

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • K. Athili,
  • Anil Kumar Birru,
  • Manojit Ghosh,
  • Sneha Roy

摘要

The effect of reinforcement with titanium diboride (TiB2) nanoparticles with an average size of 80 nm on the mechanical properties of AZ91D magnesium alloy was studied. The reinforcing TiB2 particles in an amount of 0.5 and 1.5 wt.% were introduced through the stir-casting process. Microstructural analysis and static tensile tests were performed to evaluate the effect of reinforcing the AZ91D alloy with TiB2 nanoparticles. It was found that the addition of TiB2 nanoparticles significantly improves the mechanical properties of the AZ91D alloy. The ultimate tensile strength increases by 3% for the composite with 0.5 wt.% TiB2 and by 10% for the composite with 1.5 wt.% TiB2 compared to the unreinforced alloy. The yield strength also increases by 5% and 14% for the composites with 0.5 and 1.5 wt.% TiB2, respectively. In addition, the microhardness is significantly increased by adding TiB2. The results obtained showed that reinforcing the magnesium alloy AZ91D with TiB2 nanoparticles increases the efficiency of its use for the manufacture of massive engineering constructions.