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Thank you for visiting my web site†

Welcome to Takeshi NAGASE's home page. In this site, information on Materials Science and Engineerings, and High Voltage Electron Microscopy are posted. Suggestions, or requests, please contact by e-mail (t-nagase [at] uhvem.osaka-u.ac.jp (Please replace [at] to @). Thank you!

What's New (update 2015/10/01)†

• 2015/10/01 Update, Publications
• 2015/09/31 New web site
• 2015/09/16-2015/09/18 Annual meeting, Japan Institute Metals and Materials Web

Database†

• Solid state amorphization (electron irradiation) update 2014/12/25
• Crystallization (electron irradiation) update 2014/09/01
• Cross section for atomic displacement (electron irradiation) update 2014/02/21
• Amorphous wire / rapidly solidified wire update 2014/02/20

Research topics†

High Entropy Alloys†

• Irradiation damage in High Entropy Alloys
• Solidification structure in High Entropy Alloys

Material modification by fast electron irradiation - electron knock-on†

• High Voltage Electron Microscopy
  • Cross section for atomic displacement
• Solid state amorphization (electron irradiation)
  • Database
  • Crystal-to-Amorphous-to-Crystal (C-A-C) transition
  • Relationship between SSA and Martensite transformation
• Crystallization (electron irradiation) update 2014/09/01
  • Database
  • Crystal-to-Amorphous-to-Crystal (C-A-C) transition
  • Defects in an amorphous phase - Free volume like defects and Anti Free like defects
  • Pinpoint nanocrystallization of an amorphous phase

Material modification by electron irradiation - electronic excitation†

• Synthesis of silicides at metal/SiOx interface
• Formation of metallic amorphous at metal/SiOx interface

Casting and solidification†

• Liquid phase separation
  • Multi-step liquid phase separation
  • Nano-scale phase separated structure
  • Macroscopically phase separated melt-spun ribbon
  • Macroscopically phase separated wire
• Amorphous wire and rapidly solidified alloy wire
  • Amorphous wire
  • Macroscopically phase separated wire
  • Ti-based wire for for biomedical application

     

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