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Alloys

Optimization of Tensile Strength for Zinc-Aluminum Composite Materials

Strategic Insights

— 1 min read

Researchers at the University of Technology have discovered a novel zinc-27% aluminum alloy (ZA-27) that exhibits exceptional corrosion resistance and high hardness, making it suitable for industrial applications such as vehicle parts. The alloy's outstanding performance is attributed to the presence of carbide particles, like SiC or TiC, which enhance its internal structure and mechanical properties. Through a series of experiments using Minitab statistical software, the researchers optimized the tensile strength of the composite material, achieving a remarkable 465 MPa.

Key Takeaways:

  • The researchers developed a novel zinc-27% aluminum alloy (ZA-27) with excellent corrosion resistance and high hardness, making it suitable for industrial applications such as vehicle parts.
  • The alloy's exceptional performance is attributed to the presence of carbide particles, like SiC or TiC, which enhance its internal structure and mechanical properties.
  • The researchers employed Minitab statistical software to conduct a design of experiments (DOE) to study the effect of three parameters: SiC particles percentage (X1), stirring speed (X2), and stirring time (X3), on the tensile characteristics of the SiC-enhanced ZA-27.
  • The investigation revealed a statistically significant relationship between the factors X1, X2, and X3, and the tensile strength of the composite material.
  • The researchers found that the optimal values of X1, X2, and X3, which provided the greatest tensile strength of 465 MPa, were 5 wt.% SiC particles, 900 rpm stirring speed, and 60 minutes stirring time.
  • The tensile strength obtained in practice using the calculated values of X1, X2, and X3 was almost identical to that obtained practically.

Statistics:

  • The p-value for each parameter was less than 0.005, signifying statistically significant relationships.
  • The optimal tensile strength of 465 MPa was achieved using 5 wt.% SiC particles, 900 rpm stirring speed, and 60 minutes stirring time.
  • The calculated values of X1, X2, and X3 were almost identical to the values obtained practically.

Sources:

  • NewsRx. University of Technology Researcher Adds New Findings in the Area of Engineering [Optimization of Tensile Strength for Zinc- Aluminum (ZA-27/SiC) Composite Materials Fabricated by Stir Casting]. Journal of Engineering. October 20, 2025; p 5491.
  • Optimization of Tensile Strength for Zinc-Aluminum (ZA-27/SiC) Composite Materials Fabricated by Stir Casting. Journal of Engineering, 2025, 31(10).
  • Journal of Engineering. University of Baghdad. (http://joe.uobaghdad.edu.iq/index.php/main/index)
  • DOI: 10.31026/j.eng.2025.10.10

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