Fatique and Corrosion Analysis of Alluminium 7075 Metal Matrix Composite with Reinforcement Silicon Nitride (SI3N4) and Zirconium Oxide (Zro2)

Assistant Professor Nehal Ahmad; Dr. Salim Sharieff; Rashmitha NC; Shujaith Ali Khan; Ramu M

Fatique and Corrosion Analysis of Alluminium 7075 Metal Matrix Composite with Reinforcement Silicon Nitride (SI3N4) and Zirconium Oxide (Zro2)

Author : Assistant Professor Nehal Ahmad, Dr. Salim Sharieff, Rashmitha NC, Shujaith Ali Khan, Ramu M Journa Name: INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH AND ENGINEERING TRENDS Country : India Volume: 10 issue: 3 Year: 2024 Views : 466

Abstract:

This study investigates the fatigue properties of a 7075 aluminum alloy under axial and torsional loadings. Fully reversed tension-compression and torsional fatigue tests were performed on polished dumbbell-shaped specimens. The tension- compression fatigue data were presented in an S- N plot and modeled using Basquin’s equation. The axial fatigue data were used to predict torsional fatigue life through equivalent shear stress, applying Tresca, von Mises, and maximum principal stress criteria. Scanning Electron Microscopy (SEM) was employed to examine fracture surfaces, revealing distinct cracking mechanisms under different loadings. The study found that von Mises criterion provided the most accurate predictions for torsional fatigue life. The findings contribute to a better understanding of fatigue behavior in 7075 aluminum alloy, enhancing the reliability of fatigue life predictions for components subjected to complex loading conditions.