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Crystal Plasticity Engineering Lab
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The lab develops new crystalline materials by controlling the movement of dislocations.
AboutAbout the lab
Developing new materials with the movement of dislocations as a clue
The Crystal Plasticity Engineering Lab (Yasuda Lab) aims to develop advanced materials with new structures and functions, using "crystal structure," "material properties," and "plastic deformation" as keywords.
The lab evaluates, analyzes, and controls materials from both microscopic and macroscopic perspectives.
It works on evaluating and improving the mechanical and functional properties of new materials such as intermetallic compounds, ceramics, and amorphous materials.
The lab also aims to establish "multiscale in situ observation," a method for observing in real time, from micro to macro scales, how a material's structure changes while it is deforming.
Key terms
- Dislocation
- A type of disorder in the arrangement of atoms in a crystal (a lattice defect). The movement of this line-shaped defect is linked to a material's deformation and strength
- TiAl alloy
- An alloy that is lightweight, high in strength, and excellent in oxidation resistance. It has already been put into practical use in jet engine turbine blades
- Superelasticity
- A phenomenon in which a material returns to its original shape just by removing the force, even after large deformation
NewsLab news
A master's student won a poster award at the international conference IWTA2026
Professor Yasuda and Associate Professor Cho won the Research Progress Award
Professor Yasuda won the Tanikawa-Harris Award, and Associate Professor Cho won the Achievement Award
Doctoral and master's students won poster awards at the international conference MRM2025
A master's student won a poster award at the 149th Autumn Meeting of the Japan Institute of Light Metals
ResearchResearch themes
By controlling microscopic structures such as atomic arrangements, dislocations, and planar defects, and macroscopic structures such as grain boundary structures and textures, the lab gives crystalline materials mechanical, electrical, and magnetic functions to develop new materials. Its current specific targets are high-temperature heat-resistant materials, shape memory and superelastic alloys, permanent magnets, and welding materials.
*Illustrative imageTiAl turbine blades for aircraft
TiAl alloys are lightweight, high in strength, and excellent in oxidation resistance, and have been put into practical use in jet engine turbine blades. The lab aims to establish a method of producing them with an electron beam additive manufacturing system, a type of metal 3D printer.
*Illustrative imageGigapascal-class high-temperature heat-resistant materials
In Fe-Al-Ni and Fe-Al-Co alloys, the lab found that differences in the primary slip systems of the matrix and the precipitated compound phase yield gigapascal-class yield stress even at high temperatures. It is developing heat-resistant alloys that use this strengthening mechanism.
*Illustrative imageDeveloping new superelastic alloys
Superelasticity is a phenomenon in which a material returns to its original shape just by removing the force, even after large deformation. In Fe3Al and Fe3Ga compounds, giant superelasticity appears because dislocations move reversibly, and the lab works on elucidating this mechanism and controlling the microstructure.
*Illustrative imageImproving the properties of Nd-Fe-B magnets
Drawing on know-how gained from research on the superplasticity of zirconia ceramics, the lab works to improve the properties of Nd-Fe-B magnets by controlling texture through hot working. It also conducts joint research with companies.
MembersFaculty
The members of Yasuda Lab consist of faculty, administrative assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorHiroyuki Yasuda
- Associate ProfessorKen Cho
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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: “Transmission electron microscope” Johannes Schneider / CC BY-SA 4.0 (cropped)
- TiAl turbine blades for aircraft: “Jet engine blades simulation” Dale Van Zante and Jay Horowitz / Public domain (cropped)
- Gigapascal-class high-temperature heat-resistant materials: “High-temperature-sulfur-corrosion-of-a-12CrMo195-pipe-stub-01” CEphoto, Uwe Aranas / CC BY-SA 3.0 (cropped)
- Developing new superelastic alloys: “Memory Spring Quadrat” DaniSMI / CC BY-SA 4.0 (cropped)
- Improving the properties of Nd-Fe-B magnets: “Neodymag” Bloodshedder at en.wikipedia / Public domain (cropped)
- Related lab (Biomaterials Science Lab): “Bone Tissue” Andreacise / CC BY 4.0 (cropped)
- Related lab (Solid Mechanics Lab): “The brittle fracture surface of low-carbon steel” DanilovVA / CC BY-SA 4.0 (cropped)
- Related lab (Materials Ultrafine Process Engineering Lab): “Transmission electron microscopy (TEM)” Database Center for Life Science (DBCLS) / CC BY 3.0 (cropped)
- Related lab (Materials Morphology Control Lab): “ECSC Financial report 1995 Dillinger Hütte Quarto plate rolling mill” European Coal and Steel Community / CC BY-SA 4.0 (cropped)
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