Microstructural Evaluation of Ti-6Al-4V Alloy Treated With Pulsed Laser Nd:YAG

Paper #:
  • 2012-36-0413

Published:
  • 2012-10-02
DOI:
  • 10.4271/2012-36-0413
Citation:
dos Reis, A., de Moura Neto, C., Resende, F., Reis, D. et al., "Microstructural Evaluation of Ti-6Al-4V Alloy Treated With Pulsed Laser Nd:YAG," SAE Technical Paper 2012-36-0413, 2012, doi:10.4271/2012-36-0413.
Pages:
7
Abstract:
The present study concerns laser surface nitriding of Ti-6Al-4V. The Ti-6Al-4V alloy was submitted a superficial treatment of pulsed laser Nd:YAG (λ=1.064 μ\m) in atmosphere of 40wt% nitrogen-60wt% argon. The samples were characterized by optical microscopy and electron scanning microscopy. The microstructure of the surface nitrided Ti-6Al-4V consists of TiN dendrites distributed in α--Ti matrix. It can be noted that there is a significant enhancement in surface roughness after surface nitriding (6.60 μm) as compared to the as received Ti-6Al-4V (0.46 μm). The microhardness of the surface is improved to 1100 VHN as compared to the 340 VHN of substrate.
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