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Structural Properties Lab
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A lab that refines crystal grains to create metals that are both strong and tough.
AboutAbout the lab
Toward metallic materials that combine strength and ductility.
The Structural Properties Lab conducts fundamental research on the control of nano- and microstructures and on the mechanical properties of advanced structural metallic materials.
Structural materials are materials for which mechanical performance matters most, and they are essential to the development of a safe society.
In particular, the lab is a world leader in research on metallic materials with extremely fine grain structures (bulk nanostructured metals).
It is an international lab with many international students and researchers, and it collaborates with other universities, research institutes, and industry.
Key terms
- Grain
- Each of the small crystals with a uniform orientation that make up a metal
- Ductility
- The property of a material that allows it to stretch or deform greatly without breaking. Toughness
- Phase transformation
- A change in a material's crystal structure into a different structure due to changes in temperature or other conditions
NewsLab news
A paper on the deformation of cast FCC/L12 high-entropy alloys was published in International Journal of Plasticity
A paper on a super-ductile steel in which multiple strengthening mechanisms operate in sequence was published in Materials Today
A paper on serrations in Fe–Ni TRIP steel was published in Scripta Materialia
A press release was issued on the development of FCC pure cobalt with excellent strength and ductility
A student received the Poster Session Encouragement Award at the 150th Spring Meeting of the Japan Institute of Light Metals
ResearchResearch themes
The lab clarifies how nano- and microstructures form inside metallic materials through phase transformation, precipitation, recrystallization, severe plastic deformation, and other processes, and how these structures relate to properties such as strength, ductility, and fracture.
*Illustrative imageFine grain structures, strength, and toughness
The lab clarifies how nano- and microstructures form inside metals through phase transformation, severe plastic deformation, and other processes, and how these structures relate to strength, ductility, and fracture. It is a world leader in research on bulk nanostructured metals with extremely fine grains.
*Illustrative imageMaking pure cobalt strong and tough
Pure cobalt is a metal with poor ductility at room temperature. By making the grains extremely fine, the lab retained a large amount of the crystal structure that is stable at high temperatures even at room temperature, and succeeded in greatly increasing the strength and ductility of polycrystalline pure cobalt.
MembersFaculty
The members of the Structural Properties Lab consist of faculty, researchers, and PhD, master's, and undergraduate students.
- ProfessorNobuhiro Tsuji
- Associate ProfessorSi Gao
- Assistant ProfessorMyeong-Heom Park
- Assistant ProfessorShuhei Yoshida
- Program-Specific Assistant ProfessorGHOLIZADEH Reza
- Program-Specific Assistant ProfessorSaho Yako
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Austempered Ductile Iron (ADI)” LBoron Łukasz Boroń / CC BY 4.0 (cropped)
- Fine grain structures, strength, and toughness: “CrystalGrain” Edward Pleshakov / CC BY 3.0 (cropped)
- Making pure cobalt strong and tough: “Cobalt-Metall” J. Murawski / Public domain (cropped)
- Related lab (Human Systems Lab): “Cromemco C-10 computer production line (1983)” Cromemco / CC BY-SA 3.0 (cropped)
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- Related lab (Environmental Thermo-Fluid Engineering Lab): “Kelvin-Helmholtz waves” Astronautilus / CC BY 2.0 (cropped)
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