| Budget Amount *help |
¥102,570,000 (Direct Cost: ¥78,900,000、Indirect Cost: ¥23,670,000)
Fiscal Year 2022: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2021: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2020: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2019: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2018: ¥21,450,000 (Direct Cost: ¥16,500,000、Indirect Cost: ¥4,950,000)
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| Outline of Final Research Achievements |
The understanding of deformation behavior associated with kink band formation in mille-feuille-structured materials was examined focusing on the (1) kink formation and (2) kink strengthening, and the effects of various microstructural factors were clarified. Through this, we finally clarified the new strengthening strategy using kink bands, that is, the "generalized mille-feuille criteria".
Specifically, (1) we found the formation of kink bands can be induced not only in “structural mille-feuille materials” such as LPSO phase and Max phases, but also in “microstructural mille-feuille materials” consisting of multiple phases with lamellar microstructure at the micron level, in a wide variety of alloy systems such as Mg-, Al-, Ti- and Fe-based alloys. (2) By focusing on structural mille-feuille alloy single crystals, etc., it was demonstrated that the kink band interface causes a large resistance that cannot be explained by the conventional dislocation model.
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