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language
eng
Author
Sano, Tomokazu Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
Eimura, Takayuki Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
Kashiwabara, Ryota Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
Matsuda, Tomoki Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
Isshiki, Yutaro Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
Hirose, Akio Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
Tsutsumi, Seiichiro Joining and Welding Research Institute, Osaka University
Arakawa, Kazuto Interdisciplinary Faculty of Science and Engineering, Shimane University
Hashimoto, Tadafumi Hashimoto Iron Works Co., Ltd.
Masaki, Kiyotaka National Institute of Technology, Okinawa College
Sano, Yuji Power and Industrial Systems Research and Development Center, Toshiba Corporation
Description
The authors have successfully performed femtosecond laser peening on a 2024 aluminum alloy without any sacrificial overlays. Laser pulses were directly irradiated to the surface of specimens in the air without water film as a plasma confinement medium during the peening treatment. The fatigue life was improved as much as 38 times in comparison with base material at a stress amplitude of 195 MPa. The fatigue strength of the peened specimen after 2 × 10^6 cycles was 58 MPa larger than that of the base material. The femtosecond laser peening process has a great potential to be applied in various fields where conventional peening methods cannot be used, as this process can be performed under ambient conditions without the use of a plasma confinement medium such as water or transparent materials.
Subject
femtosecond laser peening
femtosecond laser-driven shock wave
laser peening
atmospheric conditions
sacrificial overlay
2024 aluminum alloy
Journal Title
Journal of Laser Applications
Volume
29
Issue
1
Start Page
012005-1
End Page
012005-7
ISSN
1042346X
Published Date
2017-02
DOI
NCID
AA11040115
Publisher
Laser Institute of America
NII Type
Journal Article
Format
PDF
Rights
© 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). [http://dx.doi.org/10.2351/1.4967013]
Text Version
出版社版
Gyoseki ID
e31574
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering