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The Effect of Aging Phenomenon on Wear Behavior and Mechanical Properties of 7005 Series Aluminum Alloy

Forghani, Mohammad | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56828 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Serajzadeh, Siamak; Karimi Taheri, Ali
  7. Abstract:
  8. In this research, the effects of natural and artificial aging heat treatments on the mechanical and wear behavior of an aluminum alloy from the 7xxx series have been investigated. The study commenced with annealing of the received samples, which were subsequently divided into four categories. One of these categories was placed in a freezer as annealed samples, while the other two underwent artificial aging heat treatments at temperatures of 180 and 210 degrees Celsius. The final category naturally aged over time. As a result, different structures with varied distributions and morphologies of precipitates were formed, and the mechanical properties, mechanisms, and wear resistance of the produced alloys were examined. Furthermore, to enhance the understanding of the alloy's wear behavior, a wear test simulation was conducted using Abaqus software, and the obtained results were compared and analyzed alongside the results of experimental tests. Given the primary objective of this research, which is to investigate the impact of aging processes on the wear of 7xxx series aluminum, tensile tests, wear tests, and microstructural examinations using optical metallography and electron microscopy were performed. The laboratory test results were compared and analyzed in conjunction with the simulation results from Abaqus software. In conclusion, the wear test results indicated that the highest wear occurred in the naturally aged sample. Additionally, in descending order, annealed samples and artificially aged samples at 210 and 180 degrees Celsius exhibited the least amount of wear. These findings suggest that artificial aging can lead to an increase in material wear resistance
  9. Keywords:
  10. Aluminum Alloy Series 7xxx ; Wear ; Precipitate Splitting ; Wear Behavior ; Mechanical Properties ; T6 Heat Treatment

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