Structural, Morphological, and Mechanical Properties of Laser Irradiated AA-2024-T3 Aluminum Alloy Sheet

Authors

  • Tahir Ahmad Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore
  • Tabinda Kazmi Department of Metallurgy and Materials Engineering University of Engineering and Technology Lahore
  • K. A. Bhatti Laser and Optronics Center, Department of Physics, UET, Lahore, 54890, Pakistan
  • Gul Hameed Awan Department of Metallurgy and Materials Engineering, University of Engineering and Technology Lahore
  • Wasim Amin Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila
  • M. Kamran Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore
  • M. Atif Makhdoom Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore

Keywords:

Laser, Surface Processing, Wear and Corrosion resistance

Abstract

Laser is one of advanced surface processing techniques by use of which improved wear and corrosion resistance can be achieved without any modification in the bulk material. Current research involves exposure of AA2024-T3 sheet samples having dimensions of (20x20x2 mm3) to laser (InGaN diode laser of 532 nm wavelength). One sample was left unexposed while remaining samples were irradiated for 5, 10, 15, 20 and 25 minutes respectively. The irradiated samples were characterized by X-ray diffractometer (XRD), Scanning Electron Microscope (SEM) and Vickers hardness testing machine.

The SEM micrographs revealed different kinds of laser ablation on the exposed surfaces. The hkl value (111) showed that the samples have single crystal and the grain size of each sample lies in nano-meters range. A monotonic increase and decrease was observed when graphs were plotted for each sample between angle of diffraction “2θ†and grain size. Laser exposure time and micro-hardness have a direct relation, which means that AA-2024-T3 hardness increases monotonically as time of laser exposure increases. However, maximum hardness was found at exposing the AA-2024-T3 aluminum alloy sample to laser for 20 minutes. Later on, when it was irradiated for 25 minutes, micro-hardness started to decrease.

Author Biographies

Tahir Ahmad, Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore

Dr. Tahir Ahmad

Assistant Professor

Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore

Tabinda Kazmi, Department of Metallurgy and Materials Engineering University of Engineering and Technology Lahore

Department of Metallurgy and Materials Engineering, University of Engineering and Technology Lahore

K. A. Bhatti, Laser and Optronics Center, Department of Physics, UET, Lahore, 54890, Pakistan

Laser and Optronics Center, Department of Physics, UET, Lahore, 54890, Pakistan

Gul Hameed Awan, Department of Metallurgy and Materials Engineering, University of Engineering and Technology Lahore

Department of Metallurgy and Materials Engineering, University of Engineering and Technology Lahore

Wasim Amin, Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila

Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila

M. Kamran, Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore

Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore

M. Atif Makhdoom, Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore

Department of Metallurgy and Materials Engineering CEET, University of the Punjab Lahore

Additional Files

Published

2016-04-04

How to Cite

Ahmad, T., Kazmi, T., Bhatti, K. A., Awan, G. H., Amin, W., Kamran, M., & Makhdoom, M. A. (2016). Structural, Morphological, and Mechanical Properties of Laser Irradiated AA-2024-T3 Aluminum Alloy Sheet. Journal of the Pakistan Institute of Chemical Engineers, 44(1), 9–16. Retrieved from http://piche.org.pk/journal/index.php/jpiche/article/view/277