RESEARCH

Research Clusters

Advanced Structural Materials

The mechanical properties of materials are dominated by their microstructures such as grain size, precipitates, phase boundary, grain boundary, etc. In our research group, we aim to clarify the mechanical properties at microscopic level, including tensile properties, fracture and fatigue properties, using the micromechanical testing technology that we have developed. Furthermore, in conjunction with crystal plasticity finite element simulation, we aim to predict the mechanical properties of bulk materials based on those at microscopic scale. The results obtained in this research will contribute for developing toughening design of advanced materials.

Advanced Structural Materials

Cluster members

  • Japan
    Coodinator
    Yoji MINE
    Professor, Faculty of Advanced Science and Technology, Kumamoto University
    Japan
  • Japan
    Kazuki TAKASHIMA
    Distinguished Professor, International Research Organization for Advanced Science and Technology (IROAST)
    Japan
  • Japan
    Kwangsik KWAK
    Assistant Professor, Faculty of Advanced Science and Technology, Kumamoto University
    Japan
  • China
    Yufeng ZHENG Website
    Distinguished Professor, IROAST, Kumamoto University/ Professor, Department of Materials Science and Engineering, College of Engineering, Peking University/ IROAST Distinguished Professor
    China
  • UK
    Paul BOWEN Website
    Feeney Professor of Metallurgy, School of Metallurgy and Materials, University of Birmingham /IROAST Visiting Professor
    UK
  • UK
    Yu-Lung CHIU
    Senior Lecturer, School of Metallurgy and Materials, University of Birmingham
    UK
  • UK
    Hiroto KITAGUCHI　
    Senior Research Fellow, School of Metallurgy and Materials, University of Birmingham
    UK
  • Germany
    Martin DIENWIEBEL Website
    Heisenberg-Professor, Applied Nanotribology, Karlsruhe Institute for Technology (KIT)/ IROAST Visiting Professor
    Germany
  • Australia
    Robert WILSON Website
    Team Leader of Alloys and forming Processes Team, CSIRO
    Australia

Achievements

Publications
Christoph Hartmann, Kishore Venkatesan, Geoffrey de Looze, Kazuki Takashima, Shirley Shen, Robert Wilson:
Additive manufacturing of WE43 and modified AZ91D magnesium alloys using the laser engineered net shaping process
Materials Today Communications, 39 (2024) 108774

Shohei Ueki, Yoji Mine, Yu-Lung Chiu, Paul Bowen, Kazuki Takashima: 
Effects of crystallographic orientation and lamellar configuration on fatigue crack propagation in single-colony structures of Ti–6Al–4V alloy: Alternating shear crack growth vs. damage accumulation crack propagation
Materials Science and Engineering: A, 890, 145885
https://doi.org/10.1016/j.msea.2023.145885

K. Kwak, Y. Mine, S. Morito, T. Ohmura, K. Takashima:
Correlation between strength and hardness for substructures of lath martensite in low- and medium-carbon steels
Materials Science and Engineering: A, 856 (2022) 144007.
https://doi.org/10.1016/j.msea.2022.144007

Y. Tampa, K. Takagi, S. Ueki, M. Ohta, Y. Mine, K. Takashima:
Comparative Study of Shear Fracture between Fe-based Amorphous and Ultrafine-grained Alloys Using Micro-tensile Testing
ISIJ International, Volume 62, pp. 1741-1749 (2022)
https://doi.org/10.2355/isijinternational.ISIJINT-2022-088

K. Kwak, Y. Okamura, Y. Mine, K. Takashima, S. Koseki, S. Ando, K. Kuwabara:
Micro-mechanical characterisation of slip behaviour and precipitation strengthening in CoCrFeNiTiMo alloy additively manufactured by laser powder bed fusion
Materials Science and Engineering: A, 840 (2022) 142970.
https://doi.org/10.1016/j.msea.2022.142970

 

Grants
  • Elucidation of plastic deformation mechanism of additively manufactured Ti-6Al-4V alloys using trans-length scale mechanical characterization, KAKENHI Grant-in-Aid for Early-Career Scientists 2021-2024 (Continuing).
  • Development of local strengthening of micro-mechanical components using martensitic transformation induced by focused ion beam irradiation, KAKENHI Grant-in-Aid for Challenging Exploratory Research 2021-2022 (Continuing).
  • Elucidation of fatigue crack growth mechanism of martensite steels using micro-mechanical testing technique and application to fatigue strengthening design, KAKENHI Grant-in-Aid for Scientific Research (A) 2020-2024 (Continuing).

Activities

  • The international workshop between CSIRO and KU (online) in July, 2022
     
  • Progress of International collaboration between the University of Birmingham (Professor Bowen, Dr. Chiu, and Dr. Kitaguchi) and Kumamoto University
  • Start of International collaboration between Karlsruhe Institute for Technology and Kumamoto Unviersity

 

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