| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
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| Outline of Final Research Achievements |
We were interested in discontinuous precipitates appeared in some over-aged copper alloys, which has been avoided as a factor that significantly deteriorates strength properties. Based on the microstructural controlling via over-aging and sever deformation process, we have developed the conductive wires and sheets with excellent mechanical properties. We also revealed how the composition, over-aged microstructure, and defamation conditions influenced on the changes in the microstructural morphology and the properties such as hardness, strength, and electrical conductivity of the copper alloys. Behalf of the findings obtained, we were able to clarify the possibility and policy of a new microstructural control method that contributes to the creation of a group of high-strength and high-conductivity copper alloys.
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