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J-GLOBAL ID：200901097484403750   Update date: Jun. 13, 2023

Ii Seiichiro

イイ セイイチロウ | Ii Seiichiro
Affiliation and department：
National Institute for Materials Science Hybrid Materials Center

About National Institute for Materials Science Hybrid Materials Center


Job title： Senior Researcher
Homepage URL  (1)： https://samurai.nims.go.jp/profiles/ii_seiichiro?locale=en
Research field  (5)： Metallic materials ,  Structural and functional materials ,  Material fabrication and microstructure control ,  Inorganic materials ,  Composite materials and interfaces
Research keywords  (6)： Microstructure of materials ,  Grain boundary ,  Interphase boundary ,  Phase Transformation ,  Transmission Electron Microscopy ,  Al Alloys
Research theme for competitive and other funds  (14)：
  • 2018 - 2021 TEM内局所力学計測によるBCC金属の転位論モデル解析
  • 2016 - 2021 Breakthrough toward "second-generation" grain boundary engineering
  • 2015 - 2018 Dislocation theory model for local deformation behavior in bcc metal through TEM in-situ straining technique
  • 2013 - 2015 局所力学試験における材料応答の本質的理解と化学的不均質性評価手法の構築
  • 2011 - 2012 化学的相互作用を利用したバルクナノマテリアルにおける粒界性格制御手法の探索
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Papers (82)：
  • Seiichiro Ii, Takero Enami, Takahito Ohmura, Sadahiro Tsurekawa. Direct measurement of shear stress for dislocation transferring across {111} Σ3 grain boundary in aluminum bicrystal via in situ straining TEM. Scripta Materialia. 2022. 221. 114953-114953
  • Hongxing Li, Seiichiro Ii, Nobuhiro Tsuji, Takahito Ohmura. Direct observation of grain boundary formation in bcc iron through TEM in situ compression test. Scripta Materialia. 2022. 207. 114275-114275
  • Kazuki Endoh, Seiichiro Ii, Yuuji Kimura, Taisuke Sasaki, Sota Goto, Takeshi Yokota, Takahito Ohmura. Effects of grain boundary geometry and boron addition on the local mechanical behavior of interstitial-free (IF) steels. Materials Transactions. 2021. 62. 10. 1479-1488
  • Masato Wakeda, Ya-Ling Chang, Seiichiro Ii, Takahito Ohmura. Multiscale analyses of the interaction between dislocation and Σ9 symmetric tilt grain boundaries in Fe-Si bicrystals by nanoindentation technique. International Journal of Plasticity. 2021. 145. 103047-103047
  • Hongxing Li, Si Gao, Yo Tomota, Seiichiro Ii, Nobuhiro Tsuji, Takahito Ohmura. Mechanical response of dislocation interaction with grain boundary in ultrafine-grained interstitial-free steel. Acta Materialia. 2021. 206. 116621-116621
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MISC (57)：
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Books (7)：
  • 電子顕微鏡を用いた界面微細組織解析・分析技術の最前線
    アグネ社 金属 2017
  • 形状記憶合金の階層的組織観察
    材料の科学と工学 2014
  • Nanoscale Chemical Analysis in various interfaces with Energy Dispersive X-Ray Spectroscopy and Transmission Electron Microscopy
    2012
  • Development of Shape Memory Actuator for Cryogenic Application
    2010
  • AIC法による低温多結晶シリコン薄膜形成挙動の微細構造解析
    信学技報 2008
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Lectures and oral presentations  (141)：
  • Effect of grain boundary geometry on the dislocation - grain boundary interaction; the geometrical approach
    (THERMEC 2021 2021)
  • Geometrical analysis for misorientation angle dependence of grain boundary - dislocation interaction
    (Intergranular and Interphase Boundaries in Materials - IIB2019 2019)
  • Evaluation of mechanical response and microstructural change in Al by in-situ TEM experiment
    (2018)
  • Advantages of in-situ TEM technique for materials dynamics
    (Department seminar 2018)
  • TEM characterization of dislocations generated by nanoindentation around grain boundary with Fe-3% Si bicrystals
    (MS&T 18 2018)
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Education (3)：
  • 1999 - 2002 Kumamoto University
  • 1997 - 1999 Kumamoto University
  • 1993 - 1997 Kumamoto University Faculty of Engineering
Professional career (1)：
  • Docter of Engineering (Kumamoto University)
Work history (5)：
  • 2008 - 現在 National Institute for Materials Science
  • 2006 - 2008 Sojo University
  • 2004 - 2006 Kyushu University Art, Science and Technology Center for Cooperative Research
  • 2004 - 2006 財団法人福岡県産業・科学技術振興財団 研究員
  • 2002 - 2004 東京大学総合研究機構 博士研究員
Awards (7)：
  • 2022/09 - 日本金属学会 第70回 日本金属学会論文賞 ナノインデンテーション法を用いた粒界強度の調査
  • 2018 - 6th International Conference on Advanced Steels Best Poster Award
  • 2017 - MATERIALS CHARACTERIZATION Outstanding Contribution in Reviewing
  • 2008 - 第58回日本金属学会組織写真賞B部門奨励賞
  • 2006 - 第54回日本金属学会論文賞「まてりあ論文部門」
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Association Membership(s) (5)：
TMS ,  THE JAPAN INSTITUTE OF LIGHT METALS ,  THE IRON AND STEEL INSTITUTE OF JAPAN ,  日本顕微鏡学会 ,  日本金属学会
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