| 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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| 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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