| Budget Amount *help |
¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000)
Fiscal Year 2023: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2021: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2020: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
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| Outline of Final Research Achievements |
The purpose of this study was to clarify fundamental issues regarding small point defect clusters, particularly "defect allotropes," using in-situ transmission electron microscopy. The main achievements are as follows: (1) We succeeded in directly observing the formation process of defect allotropes in high-purity iron and a few iron alloys. It was made clear that the formation of defect allotropes is not due to solute or impurity atoms, but is an intrinsic property of iron. (2) We succeeded in directly observing the interactions between dislocation loops and gliding dislocations in iron at room temperature and at high temperatures.
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