| Budget Amount *help |
¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
In this study, in order to clarify the influence of elements of grain boundary segregation and solid solution on the mechanical property and the recrystallization behavior of poly crystalline metals, the development of the bicrystal fabrication method and the elucidation of properties of grain boundaries were carried out. The main results are as follows.
(1) We designed the new mold suitable for Bridgeman Method and succeeded in the fabrication of pure aluminum bicrystals. (2) The precipitation and recrystallization behavior of Al-Mn alloys were strongly affected by the temperature of hot working process and the additional elements. (3) In Al-Mg-Si alloys, the grain boundary character affects the aging precipitation behavior and the mechanical properties.
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