| Co-Investigator(Kenkyū-buntansha) |
西口 廣志 佐世保工業高等専門学校, 機械工学科, 准教授 (00580862)
川崎 仁晴 佐世保工業高等専門学校, 電気電子工学科, 教授 (10253494)
定松 直 鹿児島大学, 理工学域工学系, 准教授 (10709554)
下川 智嗣 金沢大学, 機械工学系, 教授 (40361977)
田中 將己 九州大学, 工学研究院, 教授 (40452809)
大橋 鉄也 北見工業大学, 工学部, 特任教授 (80312445)
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| Budget Amount *help |
¥43,290,000 (Direct Cost: ¥33,300,000、Indirect Cost: ¥9,990,000)
Fiscal Year 2022: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥21,710,000 (Direct Cost: ¥16,700,000、Indirect Cost: ¥5,010,000)
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| Outline of Final Research Achievements |
Hydrogen embrittlement has a major characteristic that distinguishes it from low-temperature embrittlement. The characteristic is that the fracture mode of hydrogen embrittlement is macroscopically brittle but microscopically ductile, and it is a contradictory phenomenon that is difficult to understand by conventional theories. In this study, we focused on the dislocation shielding effect, which has an essential influence on the fracture toughness of crystalline materials, and clarified the effect of hydrogen on the shielding effect. In addition, unique feature of this study is the use of silicon crystals, where the long-range stress field of dislocations can be visualized by using infrared light.
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