Pulsed Nd: YAG laser shock processing effects on mechanical properties of 6061-T6 alloy

Gencalp Irizalp S., SAKLAKOĞLU N., AKMAN E., Demir A.

Optics and Laser Technology, cilt.56, ss.273-277, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 56
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.optlastec.2013.08.011
  • Dergi Adı: Optics and Laser Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.273-277
  • Anahtar Kelimeler: Laser shock processing, Residual stress, Mechanical properties
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

The aim of this paper is to investigate effects of single and double shot Nd:YAG laser shock processing (LSP) on residual stress, micro-hardness and tensile properties of 6061-T6 aluminum alloy. The X-ray diffraction technique was used to measure surface residual stress in LSP-treated 6061-T6 samples. The magnitude and directional dependence of the surface residual stress after single shot and double shot LSP were investigated with the sin2 Ψ method. The results show that laser shock processing can significantly increase surface compressive residual stress. In addition, micro-hardness of the LSP-treated sample was measured using a Vickers diamond indenter depending on the depth. The tensile tests of the single shot and double shot LSP-treated and untreated samples were carried out by the Schimadzu tensile testing machine having a video extensometer. Experimental results show that the values of micro-hardness, tensile strength and uniform elongation increase by LSP. © 2013 Elsevier Ltd. All rights reserved.