Research topics の履歴差分(No.25)

• 履歴一覧
• 現在との差分 を表示
• ソース を表示
• 履歴 を表示
• Research topics へ行く。
  • 1 (2015-10-02 (金) 10:56:34)
  • 2 (2015-10-02 (金) 10:56:56)
  • 3 (2015-10-04 (日) 10:20:22)
  • 4 (2015-10-04 (日) 14:35:40)
  • 5 (2015-10-05 (月) 11:13:50)
  • 6 (2015-10-06 (火) 01:00:42)
  • 7 (2015-10-06 (火) 20:02:58)
  • 8 (2015-10-07 (水) 17:50:57)
  • 9 (2015-10-14 (水) 23:37:43)
  • 10 (2015-10-19 (月) 21:59:10)
  • 11 (2016-12-01 (木) 16:33:26)
  • 12 (2017-04-08 (土) 15:38:56)
  • 13 (2017-11-22 (水) 13:23:06)
  • 14 (2017-11-24 (金) 17:14:31)
  • 15 (2017-11-28 (火) 08:36:52)
  • 16 (2018-01-15 (月) 12:15:51)
  • 17 (2018-01-16 (火) 10:03:30)
  • 18 (2018-04-10 (火) 12:02:11)
  • 19 (2019-01-04 (金) 15:21:27)
  • 20 (2019-01-05 (土) 10:08:09)
  • 21 (2019-11-13 (水) 08:47:26)
  • 22 (2019-12-12 (木) 11:03:18)
  • 23 (2020-04-01 (水) 10:50:43)
  • 24 (2020-09-25 (金) 09:51:19)
  • 25 (2020-12-20 (日) 09:58:05)
  • 26 (2020-12-23 (水) 09:21:29)
  • 27 (2020-12-23 (水) 16:55:00)
  • 28 (2021-11-07 (日) 05:12:16)
  • 29 (2021-11-14 (日) 18:05:00)
  • 30 (2022-11-14 (月) 09:02:15)
  • 31 (2023-01-18 (水) 22:09:03)

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• 追加された行はこの色です。
• 削除された行はこの色です。

#author("2020-09-25T09:51:19+09:00","","")
*Research topics [#a8ce471e]
&size(18){%%%Development of new materials based on the concept "Phase Stability Control"%%%};
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuEN-00-02.PNG,left,around,nowrap,photo);
#author("2020-12-20T09:58:05+09:00","","")
*Research topics [#kbc67dce]
&size(18){%%%Materials Science of "Entropy Control"%%%};
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-01.png,left,around,nowrap,photo);
There are many states including equilibrium and metastable states which are fromed from non-equilibrium (high-energy states, excited states).~
Various materials can be obtained by the microstructure control based on "Phase Stability Control".~
The important targets are summarized by the following two points;~
(1) How to achieve the non-equilibrium state?~
(2) How to control to change from non-equilibrium to equilibrium/metastable states?~
To achieve the development of new materials based on "Phase Stability Control", the followings three techniques are investigated;~
(1) Alloy design: Thermodynamic calculation, ab-initio calculation, Data base science.~
(2) Microstructure analysis: Electron microscopy, In-situ observation, trans-scale observation~
(3) Microstructure control: Solidification and casting, Electron Irradiation~
#clear
~
~
&size(18){%%%Materials Science and Engineering for ""Regional Revitalization""%%%};
#ref(https://t-nagase.sakura.ne.jp/pict-new/Kenkyu-11.png,left,around,nowrap,photo);



&size(18){%%%Materials Science and Engineering for "Regional Revitalization"%%%};
#ref(https://t-nagase.sakura.ne.jp/pict-new/KenkyuNew-00-02.png,left,around,nowrap,photo);
「地域の得意分野を活かす・既存汎用装置を用いる」~
に基づいて開発された材料は~
(1) 既存汎用装置を使えばすぐに地域で応用展開できる~
(2) その地で培われたノウハウを使えば差別化できる~
の特徴を持つ。~
の特徴を持ちます。~
少子高齢化という避けられない壁にぶつかる中、~
日本における研究リソースはますます厳しくなる。~
(1) 合金設計: 熱力学計算, 非経験的計算法, データベース~
(2) 組織観察（電子顕微鏡法）: その場観察, サイズ横断的観察~
(3) 組織制御: 凝固・鋳造法, 電子照射法~
による「新金属材料・工業材料の開発」を行っています。~
日本における研究リソースはますます厳しくなります。~
この概念に基づく材料開発は、~
少子高齢化や人口減少などの社会問題や経済問題に直面する地域に夢と希望を与え、~
「未来を拓く科学技術の創造」と「社会の持続的発展」を~
ともに実現する新たな材料開発の一例であるとも言える。~
ともに実現する新たな材料開発の一例であるとも言えます。~
#clear
~
~


**(1) High Entropy Alloys [#s0fa6ad7]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuEN-01-HEA.PNG,left,around,nowrap,photo);
-''[[High Entropy Alloys]]''
&br;　・[[Irradiation damage in High Entropy Alloys]]
&br;　・[[Solidification microstructure in High Entropy Alloys]]
&br;　・[[High Entropy Cast Iron]]
&br;　・[[High Entropy Alloys for metallic biomaterials]]
&br;　・[[Light-Weight High Entropy Alloys]]
&br;　・[[High Entropy Brass]]
&br;　・[[Liquid phase separation in High Entropy Alloys]]

&size(18){%%%Education for the development of new materials : "solidification and casting"%%%};
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-03.png,left,around,nowrap,photo);
「金属新素材開発 と 地方創生」を達成するためには、~
金属産業が地域の歴史と地理に根差した産業であることを理解し、~
その地で培われた技術とノウハウを活用していくことが~
必要不可欠です。~
「次世代金属材料開発のための地域教育」~
ともいうべき、~
新たな教育法の検討、新たな教育教材の開発~
を行っています。~
#clear
~
~

**(2) Casting and solidification [#m2304ca7]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuEN-02-Solidification.PNG,left,around,nowrap,photo);
-''[[Solidification microstructure in Cast Iron]]''~
-''[[Solidification microstructure in High Entropy Alloys]]''~
-''[[Solidification microstructure in Ti alloys]]''~
-''[[Solidification microstructure in Fe-Si based alloys for thermoelectronic materials]]''~
-''[[In-situ TEM observation of the dendrite nucleation and growth]]''~
-''[[Liquid phase separation]]''
&br;　・[[Liquid phase separation in Ti-based alloys]]
&br;　・[[Liquid phase separation in High Entropy Alloys]]
&br;　・[[Multi-step liquid phase separation>Liquid phase separation]]
&br;　・[[Macroscopically phase separated melt-spun ribbon]]
&br;　・[[Macroscopically phase separated wire]]
-''[[Amorphous wire and rapidly solidified alloy wire]]''
&br;　・[[Amorphous wire>Amorphous wire and rapidly solidified alloy wire]]
&br;　・[[Macroscopically phase separated wire]]
&br;　・[[Ti-based wire for for biomedical application]]



**(1) Entropy control : High Entropy Alloys [#ud7504b0]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-04.png,left,around,nowrap,photo);
-''[[High Entropy Alloys]]''
-''[[High Entropy Cast Iron]]''
-''[[High Entropy Alloys for metallic biomaterials (BioHEAs)]]''
-''[[Light-Weight High Entropy Alloys]]''
-''[[High Entropy Brass]]''
-''[[Eutectic High Entropy Alloys]]''
-''[[High Entropy Alloys with HCP structure]]''
-''[[Solidification microstructure in High Entropy Alloys]]''
-''[[Liquid phase separation in High Entropy Alloys>Liquid phase separation#jafae7ff]]''
-''[[Irradiation damage in High Entropy Alloys]]''
#clear


**(3) Material modification by fast electron irradiation - electron knock-on [#a12008ed]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuEN-03-IR-HVEM.PNG,left,around,nowrap,photo);
**(2) Entropy control : Electron knock-on effect by fast electron irradiation [#w70d0513]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-05.png,left,around,nowrap,photo);
-''[[High Voltage Electron Microscopy]]''
&br;　・[[Cross section for atomic displacement]]
-''[[Solid state amorphization (electron irradiation)>Solid state amorphization]]''
&br;　・[[Database>Database, Solid state amorphization]]
&br;　・[[Crystal-to-Amorphous-to-Crystal (C-A-C) transition]]
&br;　・[[Relationship between SSA and Martensite transformation]]
-''[[Crystallization (electron irradiation)>Crystallization]]'' update 2014/09/01
&br;　・[[Database>Database, Crystallization]]
&br;　・[[Crystal-to-Amorphous-to-Crystal (C-A-C) transition]]
&br;　・[[Defects in an amorphous phase - Free volume like defects and Anti Free like defects]]
--''[[Pinpoint nanocrystallization of an amorphous phase]]''
-''[[Electron knock-on : Solid state amorphization (SSA)]]''
-''[[Electron knock-on : Crystallization (Grass-to-Crystal transition)]]''
-''[[Electron knock-on : C-G-C transition (Crystal-to-Grass-to-Crystal transition)]]''
#clear


**(4) Material modification by electron irradiation - electronic excitation [#bd9a75d5]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuEN-04-IR-TEM.PNG,left,around,nowrap,photo);
-''[[Material modification by electron irradiation - electronic excitation]]''
&br;　・[[Synthesis of silicides at metal/SiOx interface]]
&br;　・[[Formation of metallic amorphous at metal/SiOx interface]]
&br;　・[[Crystallization of metallic amorphous at metal/SiOx interface]]

**(3) Entropy control : Electronic excitation by electron irradiation [#g31ed1b1]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-06.png,left,around,nowrap,photo);
-''[[Metal/SiOx interface : Synthesis of silicides>Synthesis of silicides at metal/SiOx interface]]''
-''[[Metal/SiOx interface : Amorphous phase foramtion>Formation of metallic amorphous at metal/SiOx interface]]''
-''[[Metal/SiOx interface : Crystallization of amorphous phase>Crystallization of metallic amorphous at metal/SiOx interface]]''
#clear


**(5) Fe-Si based alloys for thermoelectronic materials [#d54970a1]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuEN-05-Thermo.PNG,left,around,nowrap,photo);
-''[[Fe-Si based alloys for thermoelectronic materials]]''
&br;　・[[Beta-FeSi2 phase formation through phase transition]]
&br;　・[[Solidification microstructure in Fe-Si based alloys for thermoelectronic materials]]

**(4) Entropy control : "Conctituent elements" + "lattice defect" [#i18910e1]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-07.png,left,around,nowrap,photo);
-''[[Irradiation damage in High Entropy Alloys]]''
#clear



**(5) Solidification (Casting) and materials development [#w79145b2]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-08.png,left,around,nowrap,photo);
-''[[Solidification : Cast iron>Cast Iron]]''
-''[[Solidification : Ti Alloys>Ti casting alloys]]''
-''[[Solidification : Silidices for thermoelectronic materials>Silidices for thermoelectronic materials]]''
-''[[Liquid phase separation]]''
-''[[Melt-extraction methods for wire fablication]]''
-''[[In-situ TEM observation of the initial process of dendrite growth]]''
#clear



**(6) Solidification (Additive manufacturing) and materials development [#qc1c9128]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-09.png,left,around,nowrap,photo);
-''[[Additive manufacturing : Ti alloys>Additive manufacturing of Ti alloys]]''
-''[[Additive manufacturing : High Entropy Alloys>Additive manufacturing of High Entropy Alloys]]''
#clear



**⑦ Development of solidification / casting experience teaching materials [#tc4933c5]
#ref(https://t-nagase.sakura.ne.jp/EN/pict-new/KenkyuNew-00-10.png,left,around,nowrap,photo);
-''[[Experiences of casting]]''
#clear

     

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