Primary characterization of micro holes on super alloy by percussion of millisecond pulse laser

DOI

10.2991/icmmita-15.2015.321How to use a DOI?

Keywords

Laser drilling; micro hole; millisecond pulse laser; percussion; super alloy

Abstract

Micro holes were formed on GH4169 super alloy using a millisecond pulse Nd:YAG laser with a average power of 65J and positive defocus of 3mm from the sample surface. The microstructure of the micro hole including morphology and elements composition were analyzed using Scanning Electron microscopy (SEM), and Energy Dispersive X-ray Spectrometer (EDS) .The results indicate that the diameter of holes is about 330 ?m with relatively high roundness. The elements composition of the area near the hole surface are different. It shows gradually increasing of O element content and decreasing of Fe element content from the substrate to the area near the hole surface.

Copyright

© 2015, 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/).

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TY  - CONF
AU  - Jiahong Wang
AU  - Yang Sheng
AU  - Guohao Cheng
AU  - Qiang Zhu
AU  - Yunlong Wang
PY  - 2015/11
DA  - 2015/11
TI  - Primary characterization of micro holes on super alloy by percussion of millisecond pulse laser
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 1732
EP  - 1735
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.321
DO  - 10.2991/icmmita-15.2015.321
ID  - Wang2015/11
ER  -