Characterization of AA2024/CNT Nanocomposites as a Function of Milling Time and CNT Content


Özer H., Canpolat Ö., Varol T.

8 th International Conference on Engineering Technologies ICENTE 2024, Konya, Türkiye, 21 - 23 Kasım 2024, ss.159-162

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Konya
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.159-162
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

The properties of particle-reinforced composites depend on the type of matrix and reinforcement. In this study, the production of AA2024 matrix CNT (carbon nanotube)-reinforced nanocomposite materials was performed by a hot pressing process. The ultrasonic dispersion method was applied for the uniform distribution of CNT particles (15 min). CNT powder concentrations of 0.125%, 0.25%, 0.5%, and 1.0% by weight were chosen for the AA2024 matrix. The ball milling process was carried out in three different time periods: 0.5, 1.5, and 3.0 hours. The density, hardness, and tensile strength of the generated composites were quantified, and their morphologies were examined using SEM. The investigations revealed a decrease in density values with the increasing concentrations of CNT. The hardness and tensile properties enhanced with higher concentrations of CNT and increased milling times, attaining maximum values for 0.5% CNT-reinforced AA2024 alloy matrix composites. At 1% CNT concentration, CNT poroeration and distribution inhomogeneity resulted in a reduction in mechanical properties.