II Seiichiro

J-GLOBAL         Last updated: Dec 18, 2018 at 10:42
II Seiichiro
National Institute for Materials Science
Hybrid Materials Center
Job title
Senior Researcher
Docter of Engineering(Kumamoto University)

Research Areas


Academic & Professional Experience

National Institute for Materials Science


Department of Material Science and Mechanical Engineering, Graduate School, Division of National Science and Technology, Kumamoto University
Faculty of Engineering, Kumamoto University

Awards & Honors

Best Poster Award, 6th International Conference on Advanced Steels
Winner: Chang Ya-Ling, II Seiichiro and Ohmura Takahito
Outstanding Contribution in Reviewing, MATERIALS CHARACTERIZATION
Third place winner for the poster sessions, 28 th International Cocoa Beach Conference and Expositionon Advanced Ceramics & Composites, Cocoa Beach, Florida

Published Papers

W. T. Jhou, C. Wang, S. Ii, C. H. Hsueh
Composites Part B: Engineering   142 193-199   Jun 2018   [Refereed]
The mechanical properties of multilayered films with alternate layers of shape memory alloy (SMA) and metallic glass (MG) were studied. Specifically, TiNi SMA and ZrCuAlNi MG were deposited alternately on the Si substrate using magnetron sputterin...
Jhou Wei-Ting, Wang Cheng, Ii Seiichiro, Chiang Hao-Sen, Hsueh Chun-Hway
JOURNAL OF ALLOYS AND COMPOUNDS   738 336-344   Mar 2018   [Refereed]
Experimental confirmation of grain boundary magnetism in Fe-Si and Fe-Sn alloys by TEM-EELS
Ii Seiichiro, Hirayama Kyosuke and Tsurekawa Sadahiro
Materials Transactions   accepted for publication   2018   [Refereed]
Watanabe Chihiro, Hibino Masakazu, Monzen Ryoichi, Ii Seiichiro, Tsuchiya Koichi
MATERIALS TRANSACTIONS   57(9) 1471-1475   2016   [Refereed]
Nien Chiao-Yin, Wang Hsin-Kai, Chen Chih-Hsuan, Ii Seiichiro, Wu Shyi-Kaan, Hsueh Chun-Hway
JOURNAL OF MATERIALS RESEARCH   29(22) 2717-2726   Nov 2014   [Refereed]


Effect of Grain Boundary on the Plastic Deformation in Fe-C alloys
K. Nakano, K. Hayashi, K. Takeda, S. Ii and T. Ohmura
Proceedings of the 5th International Symposium on Steel Science   219-222   2018   [Refereed]
Satoshi Emura, Xiao Hua Min, Seiichiro Ii, Koichi Tsuchiya
KEY ENGINEERING MATERIALS   180-185   May 2013   [Refereed]
Mo is one of the important beta-phase stabilizing elements in Ti alloys, but Mo is prone to segregation. Recently, we have found swirly segregation of Mo in hot caliber rolled Ti-12~18 mass% Mo alloys. Isothermal aging of the alloys resulted in ...
R. Tomoshige, S. Ii and Y. Morizono
Proceedings of SISP 2017   410-417   2017   [Refereed]
EELS measurement of local magnetic moments at grain boundaries in nickel and iron - effect of grain boundary character
K. Hirayama, K. Matsunaga, S. Ii, Y. Morizono and S. Tsurekawa
Conference Proceedings of APMC12, ICONN2012, ACMM22   380   2012
Experimental evaluation of local magnetic moment in 3d transition metals by TEM/EELS technique
S. Ii, K. Matsunaga, K. Hirayama, H. Fujii and S. Tsurekawa
Conference Proceedings of APMC12, ICONN2012, ACMM22   414   2012

Books etc

Nanoscale Chemical Analysis in various interfaces with Energy Dispersive X-Ray Spectroscopy and Transmission Electron Microscopy
Feb 2012   
Development of Shape Memory Actuator for Cryogenic Application
Boundary Structure of Type II twin in martensite in Ti-Ni and Ti-Pd Shape memory alloys

Conference Activities & Talks

In-situ TEM observation of dislocation-grain boundary interaction in aluminum
II Seiichiro
THERMEC 2018   8 Jul 2018   
In this study, we experimentally investigated the dislocation motion and the interaction between dislocations and grain boundaries by means of TEM in-situ straining technique. We succeeded the direct observation of the microstructural change such ...
Advantages of in-situ TEM technique for materials dynamics
II, Seiichiro
Department seminar   3 Dec 2018   
The advantages obtained by in-situ TEM observationare over-viewed. Especially, the relationship between the mechanical response and microstructure change through the in-situ indentation technique are explained. Furthermore, the future prospective ...
Improved Strength-Ductility Balance in beta Ti Alloys by Heterogeneous Alloying elemental Distribution
EMURA, Satoshi, MIN Xiaohua, JI, Xin, II, Seiichiro, TSUCHIYA, Koichi
FiMPART   9 Jul 2017   
We have successfully utilized the heterogeneous distribution of Mo in beta type Ti-Mo alloy for improving their mechanical properties, especially room temperature strength-ductility balance, through local hardness distribution and combination of d...
Visualization of elastic strain in various interfaces by TEM image analysis
II Seiichiro
THERMEC 2016   29 May 2016   
Quantitative image analysis of the elastic strain around the various interface has been investigated. As for the Si/SiGe hetero interface, the elastic strain has been visualized around the misfit dislocation, which is introduced to relax the elast...
Effect of Mg on local mechanical response in Al-Mg alloys by nanoindentation
II Seiichiro
FiMPART   9 Jul 2017   
The effect of Mg on the local mechanical response at both grain interior and grain boundaries in Pure Al and Al-Mg alloys by nanoindentation have been investigated. Nanohardness (Hn) of grain boundaries are harder than that of grain interior in bo...

Research Grants & Projects

Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(B))
Project Year: 2008 - 2009    Investigator(s): Seiishiro II
Study on Martensitic Transformation in Non ferrous Alloys
Grant-in-Aid for Scientific Research
Project Year: 1996   
Microstructural analysis by Transmission electron microscopy
Grant-in-Aid for Scientific Research
Project Year: 1997