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Structural Materials Engineering Lab
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The lab controls microstructures, mainly in steel, to create new structural materials.
AboutAbout the lab
Creating next-generation steel materials.
The Structural Materials Engineering Lab studies structural materials, especially steel, which support the shape and strength of automobiles, ships, buildings, and more.
Aiming to create new, next-generation steel materials, the lab works on new alloy design, the development of heat treatment technologies, and the evaluation and control of microstructures at the nanoscale.
Using both experimental and computational methods, it also studies how mechanical properties such as strength arise.
On the lab's website, it is listed as the "Tsuchiyama Lab."
Key terms
- Structural materials
- Materials that maintain the shape and structure of vehicles, buildings, home appliances, and the like, and bear their strength.
- Solid-state nitrogen absorption method
- A method of adding a high concentration of nitrogen to pure iron or stainless steel by heat treatment.
- Deformation-induced martensite
- A fine microstructure with high dislocation density that forms when metastable austenitic steel is cold worked.
NewsLab news
A master's student received the Excellent Poster Presentation Award at the Joint Academic Conference of the Kyushu Branches
A master's student received the Research Presentation Encouragement Award (Excellence Award) from the Japan Heat Treatment Association
A doctoral student's paper was published in Materials Characterization
A master's student received the Student Poster Session Encouragement Award from the Iron and Steel Institute of Japan
A doctoral student's paper was published in Scripta Materialia
ResearchResearch themes
The lab aims to improve the properties of structural materials, including steel, and to create new, next-generation steel materials. It works on new alloy design and heat treatment technologies, the evaluation and control of microstructures at the nanoscale, and the clarification of how mechanical properties arise.
*Illustrative imageStrengthening steel with nitrogen
Using a heat treatment called the "solid-state nitrogen absorption method," the lab produces materials in which a high concentration of nitrogen is added to pure iron or stainless steel, and examines their microstructures and properties. Austenitic steel with 1 mass% nitrogen shows a yield strength about four times that of common materials. The lab aims to clarify its deformation mechanism and to apply it to highly corrosion-resistant materials, biomaterials, and hydrogen embrittlement-resistant materials.
*Illustrative imageProperties and evaluation of deformation-induced martensite
The lab examines the morphology and crystallographic features of deformation-induced martensite, which forms when metastable austenitic steel is cold worked, as well as the nature of the dislocations inside it, using EBSD, transmission electron microscopy, and X-ray and neutron diffraction. Through alloy design that makes use of these properties, the lab aims to create new steel materials that combine this martensite with other microstructures.
MembersFaculty
The members of the Structural Materials Engineering Lab are faculty, collaborating researchers, working-professional doctoral students, doctoral, master's, and undergraduate students, a lab secretary, technical staff, and technical officers.As of 2026
- ProfessorToshihiro Tsuchiyama
- Associate ProfessorTakuro Masumura
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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: “Microstructure of a stainless steel A961” Djhé / CC BY 4.0 (cropped)
- Strengthening steel with nitrogen: “Microstructure of a stainless steel” Djhé / CC BY 4.0 (cropped)
- Properties and evaluation of deformation-induced martensite: “20180308 Martensite rinvenuta” Melancholia~itwiki / CC BY-SA 4.0 (cropped)
- Related lab (ナノ材料組織解析学研究室): “TEM analysis” ZhanserikKT / CC BY 4.0 (cropped)
- Related lab (結晶
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