Effect of laser shock peening on residual stress and microstructure of TC17 titanium alloy

  • Hao Sun
  • , Ying Zhu
  • , Wei Guo
  • , Peng Peng
  • , Shuai Huang

Research output: Contribution to journalArticlepeer-review

Abstract

Laser shock peening (LSP) with different process parameters is applied on TC17 titanium alloy, the distribution of the residual stress of TC17 titanium alloy after LSP is tested, and the microstructure is observed by transmission electron microscopy. The results show that, the surface residual stress of TC17 titanium alloy after LSP increases with the increase of impact number and pulse energy. Severe plastic deformation and high density dislocation are found on TC17 titanium alloy surface after LSP. The density of dislocation increases with the increase of laser impact number and pulse energy.

Original languageEnglish
Article number041405
JournalLaser and Optoelectronics Progress
Volume54
Issue number4
DOIs
StatePublished - 2017

Keywords

  • Laser shock peening
  • Laser technique
  • Microstructure
  • Residual stress

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