New and controllable method for creating high density lattice defects using laser shock pulse

2011 Fiscal Year Final Research Report

• Project/Area Number: 21560759
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Material processing/treatments
• Research Institution: The Wakasa Wan Energy Research Center
• Principal Investigator: KOBAYASHI Kojiro 財団法人若狭湾エネルギー研究センター, 所長 (70026277)
• Co-Investigator(Kenkyū-buntansha): SANO Tomokazu 大阪大学, 大学院・工学研究科, 准教授 (30314371)
• Project Period (FY): 2009 – 2011
• Keywords: レーザー衝撃 / 塑性加工 / 衝撃塑性 / アルミニウム材料

Research Abstract

The purpose of this study is to establish the laser shock processing method as a new technique for the plastic deformation process. We found that the femtosecond laser-driven shock compression forms high density of dislocations in solid materials. We suggest that the high density of dislocations is created due to the high-strain-rate plastic deformation and rapidly quenching induced by the femtosecond laser-driven shock wave.

Research Products

• [Journal Article] Formation of High-Density Dislocations and Hardening in Femtosecond-Laser-Shocked Silicon (2012)
  • Author(s): M. Tsujino, T. Sano, T. Ogura, M. Okoshi, N. Inoue, N. Ozaki, R. Kodama, K. F. Kobayashi, and A. Hirose
  • Journal Title: Appl. Phys. Express Volume: 5 Pages: 022703-1-3
  • DOI: DOI:10.1143/APEX.5.022703
  • Peer Reviewed
• [Journal Article] Synthesis of submicron metastable phase of silicon using femtosecond laser-driven shock wave (2011)
  • Author(s): M. Tsujino, T. Sano, O. Sakata, N. Ozaki, S. Kimura, S. Takeda, M. Okoshi, N. Inoue, R. Kodama, K. F. Kobayashi, and A. Hirose
  • Journal Title: J. Appl. Phys Volume: 110 Pages: 126103
  • DOI: doi:10.1063/1.3673591
  • Peer Reviewed
• [Journal Article] Femtosecond laser-driven shock synthesis of hexagonal diamond from highly oriented pyrolytic graphite (2009)
  • Author(s): T. Sano, K. Takahashi, O. Sakata, M. Okoshi, N. Inoue, K. F. Kobayashi, and A. Hirose
  • Journal Title: Journal of Physics : Conference Series Volume: 165 Pages: 012019-1-4
  • DOI: doi:10.1088/1742-6596/165/1/012019
  • Peer Reviewed
• [Presentation] Potentiality of femtosecond laser as a new tool for laser shock peening process (2011)
  • Author(s): T. Sano, T. Tsukada, Y. Isshiki, T. Ogura, M. Okoshi, N. Inoue, K. F. Kobayashi, and A. Hirose
  • Organizer: Materials Science & Technology 2011 Conference & Exhibition(MS & T 11)
  • Place of Presentation: Columbus, Ohio, USA
  • Year and Date: 20111016-20
• [Presentation] Femtosecond Laser-driven Shock Quenching of High-Pressure Phases of Condensed Matters (2011)
  • Author(s): T. Sano and A. Hirose
  • Organizer: International Conference on Processing & Manufacturing of Advanced Materials(THERMEC 2011)
  • Place of Presentation: Quebec, Canada
  • Year and Date: 20110801-05
• [Presentation] Femtosecond laser direct joining of copper with polyethylene terephthalate (2010)
  • Author(s): T. Sano, S. Iwasaki, Y. Ozeki, K. Itoh, and A. Hirose
  • Organizer: Materials Science & Technology 2010 Conference and Exhibition(MS & T' 10)
  • Place of Presentation: Houston, Texas, USA
  • Year and Date: 20101017-21
• [Presentation] A new laser peening process-Potentiality of femtosecond laser- (2010)
  • Author(s): T. Sano, T. Nakashima, T. Tsukada, Y. Isshiki, T. Ogura, M. Okoshi, N. Inoue, K. F. Kobayashi, and A. Hirose
  • Organizer: The 2nd International Conference on Laser Peening
  • Place of Presentation: San Francisco, USA
  • Year and Date: 20100418-21
• [Presentation] Femtosecond laser-driven shock quenching of high-pressure phases of materials (2010)
  • Author(s): T. Sano
  • Organizer: Pacific International Conference on Applications of Lasers & Optics(PICALO)
  • Place of Presentation: Wuhan, China
  • Year and Date: 2010-03-25
• [Presentation] Synthesis of high-pressure phases of condensed matter using femtosecond laser-driven shock wave (2009)
  • Author(s): T. Sano and A. Hirose
  • Organizer: The 5th International Congress on Laser Advanced Materials Processing(LAMP)
  • Place of Presentation: 神戸コンベンションセンター
  • Year and Date: 2009-07-01