Experimental Investigation of Oblique Laser Shock Processing on Aero-engine Fan Shaft
- 10.2991/ismems-16.2016.56How to use a DOI?
- Fan shaft, Circular bead, Oblique laser shock, Residual stress, Nanocrystallines, Rotary bending fatigue test
The circular bead of aero-engine fan shaft was obliquely shocked by laser shock processing (LSP). After oblique laser shocked, the residual stress and microstructure characteristic of fan shaft were investigated and analyzed. The rotary bending fatigue tests and fracture analysis were also conducted. With oblique laser shocking, refinement of the martensite lamellar structure with a depth of 100 m was observed and the structure in the outermost layer of 15 m depth refined to 5~30 nm. Beside, a preferable residual stress distribution which can release the stress concentration of circular bead was acquired after LSP .In addition, the rotary bending fatigue life of fan shaft increased by 150% after LSP. Fracture analysis showed that the fatigue initiation migrated to inner materials and the crack growth speed of fan shaft reduced by LSP. It can come to a conclusion that LSP is a high-efficient surface treatment method to treat the stress concentration area of components
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Peiyu Zhang AU - Cheng Wang AU - Yan Chai PY - 2016/12 DA - 2016/12 TI - Experimental Investigation of Oblique Laser Shock Processing on Aero-engine Fan Shaft BT - Proceedings of the International Symposium on Mechanical Engineering and Material Science PB - Atlantis Press SP - 328 EP - 334 SN - 2352-5401 UR - https://doi.org/10.2991/ismems-16.2016.56 DO - 10.2991/ismems-16.2016.56 ID - Zhang2016/12 ER -