A5084054192- Microstructure and mechanical properties
- Metal and Thin Film Mechanics
- Surface Treatment and Residual Stress
- Metal Alloys Wear and Properties
- Microstructure and Mechanical Properties of Steels
- Titanium Alloys Microstructure and Properties
- Advanced materials and composites
- Shape Memory Alloy Transformations
- Metallurgy and Material Forming
- Aluminum Alloys Composites Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Metallic Glasses and Amorphous Alloys
- High-Velocity Impact and Material Behavior
- Intermetallics and Advanced Alloy Properties
- Advanced Surface Polishing Techniques
- Magnetic Properties and Applications
- Advanced Materials Characterization Techniques
- Magnesium Alloys: Properties and Applications
- Metal Forming Simulation Techniques
- Advanced machining processes and optimization
- Iron oxide chemistry and applications
- Semiconductor materials and interfaces
- Erosion and Abrasive Machining
- Laser and Thermal Forming Techniques
- Glass properties and applications
Toyohashi University of Technology
2016-2025
Aichi University
2019
Tohoku University
2014
National Institute of Technology, Toyota College
2013
Kagawa University
2012
MicroVision (United States)
2011
Toyota Industries (United States)
2008
The formation of nanocrystalline structure (NS) on the surface bulk steel samples by a particle impact and air blast shot peening techniques was studied. Nanocrystalline layers with several microns thick were successfully fabricated these methods. produced in present study have extremely high hardness separated from adjacent deformed morphology region sharp boundaries. By annealing, showed slow grain growth without recrystallization. Those characteristics are similar to those observed NS...
Surface nanocrystallization in various steels by shot peening (both air blast (ABSP) and ultrasonic (USSP)) was investigated. In all the shot-peened specimens, equiaxed nanocrystals with grain size of several 10 nm were observed at surface regions. The depth nanocrystalline (NC) layers μm. NC have extremely high hardness separated from deformed structure regions just under sharp boundaries. By annealing, show substantially slow growth without recrystallization. These characteristics are...
The effect of strain path in high-pressure torsion (HPT) process on hardening was investigated commercial purity titanium (Ti-0.03Fe-0.03O, mass%). After monotonic HPT (mHPT) straining up to N=10 turns at a rotation speed 0.2 rpm under pressure P=5 GPa, the obtained Vickers microhardness, Hv, around 3.5 GPa and microstructure consisted equiaxed grains 100∼200 nm with high dislocation density. This Hv value hardly increased even further gradient (further rotation). To investigate path, cyclic...
The influence of heat generation during severe plastic deformation on microstructure evolution was investigated in commercial purity aluminum (Al 1050, CP-Al) by using high-pressure torsion (HPT) process. characterized the observations and longitudinal planes. CP-Al disks were deformed HPT-straining up to 20 turns (equivalent strain, εeq, ∼600) at 0.2 or 5 rpm room temperature. To prevent increase specimen temperature, also carried out liquid nitrogen. In all conditions, value Vicker's...