A5020569850- Microstructure and Mechanical Properties of Steels
- Microstructure and mechanical properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Metallurgy and Material Forming
- Metal Alloys Wear and Properties
- Magnetic Properties and Applications
- Corrosion Behavior and Inhibition
- Aluminum Alloys Composites Properties
- Material Properties and Failure Mechanisms
- Fatigue and fracture mechanics
- Electrodeposition and Electroless Coatings
- Metal and Thin Film Mechanics
- High Entropy Alloys Studies
- Titanium Alloys Microstructure and Properties
- Advanced materials and composites
- Welding Techniques and Residual Stresses
- Aluminum Alloy Microstructure Properties
- Shape Memory Alloy Transformations
- Magnesium Alloys: Properties and Applications
- Intermetallics and Advanced Alloy Properties
- Nuclear Materials and Properties
- Metallic Glasses and Amorphous Alloys
- High-Temperature Coating Behaviors
- Advanced Materials Characterization Techniques
- Additive Manufacturing Materials and Processes
Kyoto University
2015-2024
National Institute for Materials Science
2018-2024
Japan Science and Technology Agency
2022-2024
Materials Science & Engineering
2008-2023
Centre des Matériaux
2019-2021
Centre National de la Recherche Scientifique
2019
ParisTech
2019
Tokyo Institute of Technology
1992-2014
Tohoku University
2014
Shimane University
2014
Abstract It is commonly accepted that twinning can induce an increase of strain-hardening rate during the tensile process face-centered cubic (FCC) metals and alloys with low stacking fault energy (SFE). In this study, we explored grain size effect on behavior a Cu-15 at.%Al alloy SFE. Instead twinning, detected significant contribution faults (SFs) irrespective even in initial stage process. contrast, was more sensitive to onset deformation twins might be postponed higher strain increasing...
In this study, the substructures and crystallographic features of as-quenched lath martensite in interstitial-free (IF) steel low-carbon (0.2C steel) were investigated using focused ion beam-scanning electron microscopy serial sectioning advanced transmission microscopy. A three-dimensional analysis revealed that morphology so-called lath, smallest structural unit, exhibited a wedge-shaped plate instead ideal shape. The habit plane orientations distributed from (5 7 5)A to (1 1 1)A IF steel,...
This study investigated the characteristics of hydrogen-related crack propagation in low carbon lath martensite steel through orientation analysis using electron backscattering diffraction. The revealed that fracture surface consisted {011}M facets, which were also parallel to block boundaries or structure. In addition, micro-cracks observed on vicinity prior austenite grain boundaries. On basis experimental results, we proposed hydrogen enhanced local plastic deformation occurred mechanism...
Interstitial free (IF) steel specimens with different mean grain sizes ranging from 0.4 to 12 µm were fabricated by the accumulative roll bonding (ARB) process and subsequent annealing. Tensile tests at room temperature have revealed that decreasing size down an ultra-fine range, yielding behavior gradually changes continuous discontinuous yielding, accompanying a yield drop phenomenon. It has been found stress of having fine shows extra-hardening, deviated original Hall–Petch relation for...
This paper summarised the microstructural and crystallographic features of hydrogen-related fracture under tensile deformation in martensitic steels. The specimens with relatively low strength exhibited quasi-cleavage fracture. Crystallographic orientation analysis demonstrated that occurred on {011} planes. On other hand, macroscopic surface morphologies high appeared to be intergranular-like. However, nature was somewhat different from a typical intergranular fracture, surfaces consisted...