| Budget Amount *help |
¥43,290,000 (Direct Cost: ¥33,300,000、Indirect Cost: ¥9,990,000)
Fiscal Year 2021: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2019: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2018: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2017: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
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| Outline of Final Research Achievements |
Using first-principles calculations and atomistic modeling methods with force fields, we analyze the temperature, stress, and chemical environment dependences of the activation of elementary processes of plastic deformation in various crystalline and glass materials, and predict its strength and ductility with the help of micromechanics theory. Based on these analysis, we developed a design guideline for materials having both high strength and ductility simultaneously, and verified the validity of the guideline by experiments. in addition, we also developed new computational methods in the research process, such as a multi-scale method for activationn of elementary process of plastic deformation in highly localized stress field, such as stress field in nanoindentation and at crack tip, and a method for evaluating the temperature dependence of activation energy.
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