| Budget Amount *help |
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2014: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
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| Outline of Final Research Achievements |
In the present study, we succeeded in developing high temperature structural materials composed of (bcc+L21) phases. The L21 phase is precipitated in the bcc matrix in Fe-Al-Ni and Fe-Al-Co single crystals doped with a small amount of Ti and V. The (bcc+L21) alloys show higher strength than ferritic heat-resistant steels. Moreover, <001> dislocations which hardly move in bcc metals can be observed in V-doped crystals. So, the behavior of <001> dislocations in the (bcc+L21) single crystals can be examined. In addition, co-doping of Ti and V leads to a decrease in the misfit strain, which results in high strength at high temperatures.
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