| Budget Amount *help |
¥156,650,000 (Direct Cost: ¥120,500,000、Indirect Cost: ¥36,150,000)
Fiscal Year 2022: ¥26,910,000 (Direct Cost: ¥20,700,000、Indirect Cost: ¥6,210,000)
Fiscal Year 2021: ¥27,820,000 (Direct Cost: ¥21,400,000、Indirect Cost: ¥6,420,000)
Fiscal Year 2020: ¥28,860,000 (Direct Cost: ¥22,200,000、Indirect Cost: ¥6,660,000)
Fiscal Year 2019: ¥33,670,000 (Direct Cost: ¥25,900,000、Indirect Cost: ¥7,770,000)
Fiscal Year 2018: ¥39,390,000 (Direct Cost: ¥30,300,000、Indirect Cost: ¥9,090,000)
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| Outline of Final Research Achievements |
Based on the crystal geometry, we theoretically derived that the generation of a disclination is inevitable during the formation of ridge kinks. This result was also verified by experiments using high-precision crystal orientation analysis. We also succeeded in quantifying the Flank vector of the disclination based on the new theory by unifying the lattice-defect theory of dislocation and disclination based on differential geometry. Furthermore, from the viewpoint of kink strengthening, we theoretically demonstrated that, in addition to the contribution of the elastic strain field of the dislocation, the energy increment due to the generation of the disclination acts as a deformation resistance. In collaboration with other researchers in our group, we found a unique phenomenon in which the solute-atom-enriched kink interface moves with a Portevin-Le Chatelier effect during room-temperature deformation after kink formation in the LPSO phase.
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