Development of a micron-scale plasticity theory and its engineering application
| Project/Area Number |
21560076
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 連続体力学 / 結晶塑性 / 連続分布転位論 / 格子欠陥 / 機械材料・材料力学 |
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| Research Abstract |
Mechanical behavior of metals at the micron scale were systematically investigated, and a physically-based gradient crystal plasticity theory has been formulated. In the experimental part of the study, microbend tests with reversal of bending direction were carried out on aluminium and copper single-crystal foils. The results strongly suggested that internal stresses, which act as back-stresses, existed in the bent foil specimens due to a non-uniform array of the geometrically necessary dislocations (GNDs). In the theoretical part, the effect of the GNDs was incorporated into a framework of gradient crystal plasticity theory.
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Report
(4 results)
Research Products
(19 results)
